Power Outage in Phoenix, AZ

Downed power poles in Wintersburg affecting 41 customers were reported Between Buchanan Street to Yuma Road and between Powers Butte Road to Johnson Road. Winds were estimated at around 70 mph. No injuries were reported.

Downed power poles, 18 approximately, affected 52 customers in an area between S Higley Road and S Mandarin Drive and between E San Tan Blvd and W San Dance Drive. Winds were estimated at around 70 mph based on radar data. No injuries were reported.

Downed powerlines affecting 252 customers were reported in an area between the Hassayampa River to Elliot Road to 355th Avenue to Wintersburg Road in Wintersburg. Winds were estimated at around 70 mph. No injuries were reported.

Power pole blown over due to thunderstorm winds in the area of Wintersburg Road and Latham Street near Tonopah. Winds were estimated at around 70 mph. Timing estimated from radar. No injuries were reported.

East Tepee Street at Plaza and 16th Avenue near Valley and San Marcos in Apache Junction were closed due to debris and downed power poles. Timing estimated from radar. No injuries were reported.

Several images showed downed power lines and multiple snapped power poles along Cactus Road between 91st Avenue and 83rd Avenue. Most poles were wooden, but there was at least one metal pole that fell down across the road. Timing estimated from radar. No injuries were reported.

Images showed several snapped power poles in the area of Johnson Road and Yuma Road. Downed trees were also reported in the area. Timing estimated from radar. No injuries were reported.

Downed power lines were reported along Hawes Road between Elliot and Warner Roads. Wind speed estimated around 60 mph. Time estimated from radar. No injuries were reported.

At least 15 downed and/or snapped power poles along North 35th Avenue, near West Bell Road in Phoenix. Timing estimated from radar. Wind gust was estimated at 60-70 mph. No injuries were reported.

Metal power poles were blown over, trapping 18 vehicles, along North Scottsdale Road in Scottsdale. Timing estimated from radar. Wind gusts were estimated between 65-70 mph. No injuries were reported.

Downed power poles reported in an area between East Cholla Street to East Redfield Road and East Thunderbird Road to East Sweetwater Avenue in Scottsdale. Timing estimated from radar. Winds were estimated at 65-70 mph. No injuries were reported.

Downed power lines reported just southeast of Granite Reef Dam. A photo taken along Power Road also showed at least 1 snapped and 3 toppled power poles. Time estimated from radar. Winds were estimated at 55-60 mph. No injuries were reported.

Downed power poles reported in the area of West Cactus Road and North 30th Avenue in Phoenix. Timing estimated from radar. Wind gust was estimated at 60-70 mph. No injuries were reported.

A 77 mph wind gust was measured at the Buckeye Municipal Airport. Triple G Dairy Farm, just to the south of the airport, experienced a lot of damage, including shattered windows from flying debris or hail, a few downed power poles, uprooted trees, metal roof partially torn off one building, and at least minor damage to nearby homes owned by dairy workers. A month after the storm, NWS Phoenix was contacted by a claims specialist looking into a hangar door that was blown off at the airport. Although unconfirmed, this storm, with the 77 mph gust, is the most probable cause of the hangar door damage. Estimated damage costs for the hangar door are applied to this event. No injuries were reported.

Power poles were down near the intersection of Frontier Drive and 151st Avenue. Timing estimated from radar. No injuries were reported.

Media live broadcast showed a snapped power pole near Cave Creek Road and Greenway Road. No injuries were reported.

Approximately 7-8 power poles were reported down along the Grand Canal, with many falling toward homes and crashing through cinder block walls. Another cinder block wall was knocked down after a metal shed blew out of the backyard of a home and into the canal. No injuries were reported.

SR-87 was closed between Loop-202 and Shea Blvd due to widespread wind damage. One mobile home and one modular home were destroyed resulting in one injury, requiring the person to be transported to the hospital and be placed in the Intensive Care Unit. Numerous power poles were blown down as well as several transmission towers that had collapsed. The transmission towers were in an area west of Gilbert Rd and along Highway 87. Salt River Project (SRP) utilities confirmed a total of 16 power poles were either blown over or snapped. They also confirmed another 5 (230 volt) transmission towers had collapsed. Other less severe damage was widespread across the region that included shingles blown off numerous homes, tree damage and damage to road signs. 20 other homes were listed as inhabitable. Initial wind estimates from NWS Phoenix were 80-100 mph. SRP rated their transmission towers for 90-95 mph. So, speeds may have actually been 100+ mph.

Social media images showed blown out billboards, roof damage, heads of palm trees blown off, powerline damage, and tiling damage on 56th street in East Mesa. Timing estimated from radar. No injuries were reported.

Strong winds associated with a thunderstorm downburst resulted in downed trees and power lines with pictures showing several power poles blown over along Ocotillo Road near Sossaman Road in Queen Creek. A person traveling along Ocotillo Road at the time became trapped after power lines fell onto their car. The individual escaped the incident without any injury. Ocotillo Road between Sossaman Road and Power Road was closed as crews worked to repair power poles and power lines. Winds in the area are believed to have climbed upwards of 55 mph. Nearby, Phoenix-Mesa Gateway Airport recorded a 52 mph gust.

Downed power pole. Winds were estimated at around 70 mph. No injuries were reported.

Multiple reports from storm chasers and local media of multiple downed power poles, trees, flipped irrigation pivots, and a rolled RV along and just east of SR-347, northwest of Stanfield. The local utility company reported around 50 downed power poles across the area, most of which were blown toward the north. There was a confirmed landspout in the general area as well, however, there was no evidence that it was the cause of any of the damage. Therefore, the downburst winds are being treated as the official cause of the damages. Winds were estimated at around 70 mph after discussion with the utility company. No injuries were reported.

According to the Salt River Project (SRP), a power pole was blown over near Main Street and Dobson Road. No injuries were reported.

Photos on social media showed downed power poles near 44th Street and Indian School Road. Additional photos showed a couple of snapped palm trees down in the same area causing severe damage to a vehicle as well as to the the gate of a driveway. No injuries were reported.

A downed power pole was reported near Ellsworth Road and Brown Road in Mesa. No injuries were reported.

A photo on social media showed a large uprooted tree down on some power lines near 15th Avenue and Glendale Avenue. No injuries were reported.

Photos on social media showed a large tree down on power lines near Lower Buckeye Road between 67th Avenue and 75th Avenue. Timing of 60-65 mph winds was estimated using radar. No injuries were reported.

Multiple large pine trees and power poles were blown down at an apartment complex along University Drive between Val Vista Drive and Lindsay Road. Additional downed trees were reported in this area. No injuries were reported. Timing was estimated using radar.

Photos from APS utility company on social media show several downed or snapped wooden and metal power poles along 27th Avenue just north of Durango Street. A microburst signature was evident on radar in this area. Winds were estimated around 60-65 mph based on a 61 mph measured gust a few blocks away. No injuries were reported.

A microburst caused considerable damage from the McCormick Rach area and down to Scottsdale Road and McDonald Road with hundreds of downed trees and several downed power poles that caused a power outage to the area. The McCormick Ranch golf course had at least 220 large trees uprooted or snapped across the property. Several trees also fell on homes around the course. Course officials estimated the damage costs to the course at $600,000. At a shopping plaza on the southwest side of the course a palm tree fell onto a business, causing damage to the roof. Across Indian Bend Road to the south, McCormick-Stillman Railroad Park received extensive damage with several large trees, including pines, being uprooted or snapped across the park. Some of the toppled trees fell on park buildings and trains. At least 6 power poles were downed or snapped due to the winds with most of the poles along Scottsdale Road between Lincoln Drive and McDonald Drive. In this area 5 large trees were also uprooted with a couple of them being pine trees. Winds were estimated around 70-80 mph based on damage. Timing estimated from radar. There were no injuries.

A microburst caused considerable damage from the McCormick Rach area and down to Scottsdale Road and McDonald Road with hundreds of downed trees and several downed power poles that caused a power outage to the area. The McCormick Ranch golf course had at least 220 large trees uprooted or snapped across the property. Several trees also fell on homes around the course. Course officials estimated the damage costs to the course at $600,000. At a shopping plaza on the southwest side of the course a palm tree fell onto a business, causing damage to the roof. Across Indian Bend Road to the south, McCormick-Stillman Railroad Park received extensive damage with several large trees, including pines, being uprooted or snapped across the park. Some of the toppled trees fell on park buildings and trains. At least 6 power poles were downed or snapped due to the winds with most of the poles along Scottsdale Road between Lincoln Drive and McDonald Drive. In this area 5 large trees were also uprooted with a couple of them being pine trees. Winds were estimated around 70-80 mph based on damage. Timing estimated from radar. There were no injuries.

Video on social media showed a tree blew over and blocked Power Road near McKellips Road. Winds were estimated around 55-60 mph. Timing estimated from radar.

Gilbert Police reported southbound lanes on Lindsay Road at Ray Road were blocked due to a downed power pole as a result of strong winds. Winds estimated around 60 mph and timing estimated from radar. No injuries reported.

Gilbert Police closed Riggs Road between Val Vista Drive and Adora Boulevard due to downed powerlines. Winds were estimated around 60 mph and timing was estimated from radar. No injuries were reported.

Multiple large trees snapped or blown over in strong winds during a severe warned thunderstorm around the Superstition Springs Center near Power Road and Southern Avenue. Winds estimated around 55-60 mph. Timing estimated from radar. No injuries reported.

Multiple photos and videos on social media and reports from broadcast media of at least 14 downed utility power poles along 35th Avenue between Dunlap Avenue and Cactus Road in Phoenix due to strong winds from a severe warned thunderstorm. The downed poles and lines also knocked over street signs and street lamps, disrupted traffic, and caused a power outage for the area that took more than a day to be restored. Additionally, several large trees were uprooted or snapped in and around Cortez Park at 35th Ave and Dunlap Ave and a metal carport reportedly blew more than a block away near 35th Ave and Peoria Ave. Wind gusts were estimated around 55-65 mph. Timing estimated from radar. No injuries were reported.

A cold front associated with a strong winter storm pushed across the north central portion of the greater Phoenix area during the afternoon hours on January 25th. A line of strong to severe thunderstorms associated with the frontal passage generated some damaging outflow winds affecting northern portions of the town of Glendale. According to a report from the general public, at 1350MST strong winds estimated to be nearly 70 mph in strength blew down a large steel power pole and power lines near 3040 West Morrow Drive, about 7 miles northeast of Glendale. About 10 minutes later, local broadcast media reported that 9 power poles were blown down near the intersection of 35th Avenue and Union Hills Drive. Both incidents of downed poles took place just west of Interstate 17 and between the Loop 101 and Bell Road. No injuries were reported.

A cold front associated with a strong winter storm moved through the western portions of the greater Phoenix area, including the community of Glendale, during the afternoon hours on January 25th. A line of strong to severe thunderstorms associated with the front generated some gusty and damaging outflow winds. At around 1340MST, reports show that strong winds estimated around 60 mph caused damage to six vehicles, numerous trees, and campus buildings at Glendale Community College. A power line also sustained damage along Olive Ave. No injuries were reported.

A cold front associated with a strong winter storm moved across the central portion of the greater Phoenix area during the early afternoon hours on January 25th. A line of strong to severe thunderstorms associated with the frontal passage developed some gusty and damaging outflow winds. At 1355MST a trained spotter located 5 miles northeast of Phoenix reported roof damage, as winds estimated as high as 60 mph blew the roof off of a shed. The damage occurred just south of Lookout Mountain Park. Just a few minutes later and not far to the west, broadcast media reported that power poles were down, and some of them were of the metal variety. The outflow winds here were estimated to be as high as 70 mph. The downed poles were near the intersection of 7th Street and Thunderbird Road. There were no reports of injury due to the damaging winds.

Thunderstorms with moderate hail developed in the community of Higley during the afternoon hours on September 8th. At roughly 1700MST hail with diameters up to 0.88 inches fell about 3 miles southeast of Higley and just to the southwest of the Mesa-Gateway airport. The hail, which fell near the intersection of Power and Germann Road, was reported via a CoCoRaHS report. There was no damage reported due to the hail.

Thunderstorms with gusty and damaging outflow winds developed to the southeast of Phoenix during late afternoon hours on September 8th. Some of the stronger storms affected communities such as Higley. At 1710MST a trained spotter located about 2 miles southeast of Higley reported that outflow winds estimated to be as high as 60 mph downed multiple trees along Germann Road between Greenfield and Power Roads. There were no reports of injury due to the falling trees.

Thunderstorms with gusty and damaging outflow winds developed across central portions of the greater Phoenix area during the evening hours on August 20th. Some of the stronger storms impacted areas a few miles to the northeast of Phoenix Sky Harbor Airport. According to the Phoenix Fire Department and Rescue unit, at 1947MST gusty winds estimated to be as high as 60 mph downed a large 100 foot tall pine tree onto a home located near the intersection of 32nd Street and Osborn Road, about 4 miles north of Sky Harbor. At roughly the same time, local broadcast media reported power lines and trees downed near the intersection of 44th Street and McDowell Road, about 3 miles northeast of Sky Harbor. The media also had a video of a Palo Verde tree being blown across the parking lot of a new station about a half mile further to the south. Again, winds were estimated to be as high as 60 mph. There were no reports of injuries due to the strong winds or falling trees.

A powerful Pacific low pressure system spread deep moisture into the central deserts on Marcth 12th; aided by modest instability it allowed scattered to numerous showers and thunderstorms to develop during the afternoon and evening hours. Moderate to heavy rain fell with many of the storms, affecting areas to the southwest of central Phoenix. Peak rain rates were well in excess of 1 inch per hour; earlier in the day at about 1100MST a rain gage at Woolsey Peak measured 2.37 inches in a 2 hour period. The heavy rain led to some flash flooding as streams and washes rose rapidly, exceeding alarm stages on gages and causing road closures. At 2303MST county officials reported that Agua Caliente Road was closed as the Cruff Wash reached action stage. The wash crested at flood stage of 4.8 feet. This was about 9 miles south of the Palo Verge Nuclear Generating Station. Shortly after that, at 2324MST, county officials reported that Old Highway 80 was closed at Rainbow Wash as the wash reached action stage. This was about 15 miles southwest of Buckeye. Finally, at 2356MST officials reported that Old Highway 80 was closed due to the Centennial Wash reaching action stage; this occurred about 10 miles south-southeast of the Palo Verde station. Flash Flood Warnings were issued and in effect at the time of the road closures. Fortunately there were no reports of injuries or accidents due to the flooding.

A powerful Pacific low pressure system spread deep moisture into the central deserts on Marcth 12th; aided by modest instability it allowed scattered to numerous showers and thunderstorms to develop during the afternoon and evening hours. Moderate to heavy rain fell with many of the storms, affecting areas to the southwest of central Phoenix. Peak rain rates were well in excess of 1 inch per hour; earlier in the day at about 1100MST a rain gage at Woolsey Peak measured 2.37 inches in a 2 hour period. The heavy rain led to some flash flooding as streams and washes rose rapidly, exceeding alarm stages on gages and causing road closures. At 2303MST county officials reported that Agua Caliente Road was closed as the Cruff Wash reached action stage. The wash crested at flood stage of 4.8 feet. This was about 9 miles south of the Palo Verge Nuclear Generating Station. Shortly after that, at 2324MST, county officials reported that Old Highway 80 was closed at Rainbow Wash as the wash reached action stage. This was about 15 miles southwest of Buckeye. Finally, at 2356MST officials reported that Old Highway 80 was closed due to the Centennial Wash reaching action stage; this occurred about 10 miles south-southeast of the Palo Verde station. Flash Flood Warnings were issued and in effect at the time of the road closures. Fortunately there were no reports of injuries or accidents due to the flooding.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across northern portions of the Phoenix area during the morning hours on November 29th. Aided by frontal lift, embedded thunderstorms developed which helped to enhance rain totals. The heavy rain led to an episode of flash flooding about 8 miles to the south of New River. Flooding actual began earlier in the morning but the impacts lingered through the late morning hours. As related by another federal agency, flash flooding resulted in the closure of the Carefree Highway (State Route 74). One driver became stuck in the flooded road and a water rescue was needed to free the driver. The rescue occurred at about 1109MST. At the time, there was no flash flood warning in effect. Fortunately the driver appeared to be fine after his rescue.

A powerful Pacific upper level low and associated cold front pushed east across the central and northern portions of the greater Phoenix metropolitan area during the early morning hours on November 29th. Due to elevated levels of wind shear and instability, the front spawned several tornadoes in the Phoenix area, including one that tracked through portions of North Phoenix and Deer Valley. The tornado moved to the northeast, across Lookout Mountain, and ended near the intersection of Loop 101 and Highway 51. The tornado, which was spotted by both the public and members of local broadcast media, touched down at about 0349MST and lifted back in the sky at 0359MST. The path length was nearly 10 miles. There were numerous reports of damage, some reported via social media. Broadcast media reported several trees downed along Thunderbird Road between 7th Avenue and 3rd Street. Media also reported several trees downed about 5 miles southeast of Deer Valley, and a carport was also destroyed. Additionally, at 0355MST the public reported that a carport was blown over onto some cars near the intersection of Bell Road and 15th Street. Fortunately there were no reports of injuries or fatalities due to the tornado.

A powerful Pacific upper level low and associated cold front pushed east across the central and northern portions of the greater Phoenix metropolitan area during the early morning hours on November 29th. Due to elevated levels of wind shear and instability, the front spawned several tornadoes in the Phoenix area, including one that tracked through portions of North Phoenix and Deer Valley. The tornado moved to the northeast, across Lookout Mountain, and ended near the intersection of Loop 101 and Highway 51. The tornado, which was spotted by both the public and members of local broadcast media, touched down at about 0349MST and lifted back in the sky at 0359MST. The path length was nearly 10 miles. There were numerous reports of damage, some reported via social media. Broadcast media reported several trees downed along Thunderbird Road between 7th Avenue and 3rd Street. Media also reported several trees downed about 5 miles southeast of Deer Valley, and a carport was also destroyed. Additionally, at 0355MST the public reported that a carport was blown over onto some cars near the intersection of Bell Road and 15th Street. Fortunately there were no reports of injuries or fatalities due to the tornado.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across western portions of Maricopa County during the morning hours on November 29th. Aided by frontal lift, isolated thunderstorms developed within the bands of rain, locally enhancing rain totals. The heavy rain led to an episode of flash flooding in the community of Wickenburg during the early morning hours. According to the Wickenburg fire and rescue department, flash flooding caused the vulture mine road to become closed at Sols Wash, about 3 miles to the northwest of Wickenburg. The actual time of the flooding was estimated to be 0351MST, based on data from a Maricopa County Flood Control District streamgage; the gage crested at 1.79 feet and travel time of the flood wave was used in estimating the exact time of flash flooding. There were no reports of accidents due to the flash flooding.

A strong cold front associated with a powerful Pacific low pressure system moved across the greater Phoenix area during the early morning hours on November 29th. The front was associated with isolated thunderstorms which served to locally enhance the strong winds which produced damage across the north portion of the Phoenix area. According to a report from the public, at 0355MST gusty winds estimated as high as 60 mph blew over a car port onto several cars. The damage occurred near the intersection of Bell Road and 16th Street, about 4 miles southeast of Deer Valley. At the same time, just to the southeast (about 5 miles southeast of Deer Valley) similarly strong winds downed numerous trees and destroyed a carport. The damage was just southeast of East Greenway Parkway and 20th Street. There were no reports of injuries due to the strong winds.

A powerful Pacific upper level low and associated cold front moved east across central and northern portions of the greater Phoenix metropolitan area during the early morning hours on November 29th. Due to elevated levels of wind shear and instability, the front generated several tornadoes in the Phoenix area, including one that tracked to the northeast from eastern Glendale into portions of north Scottsdale. According to a NWS storm survey, the tornado had a path length more than 8 miles and was estimated to be an Ef1 in strength. The tornado began just west of Phoenix Mountain Park and ended near the west side of the Scottsdale TPC Golf Course. There were a number of damage reports associated with the tornado along its path. Many of them were related to downed trees including some with diameters up to 3 feet across. A trained spotter 4 miles west of North Scottsdale reported that some trees fell on vehicles causing damage. Additionally, there were reports of roofs removed and damaged along the path of the tornado. Finally, about 6 miles east of Glendale, Channel 3 TV reported that a very large tree fell on a carport and caused it to collapse upon a car. The fallen tree was just south of Northern Avenue, between 7th and 3rd Avenues. Fortunately there were no reports of any injuries or fatalities.

A powerful Pacific low and associated cold front moved east across the greater Phoenix area during the early morning hours on November 29th. The front brought gusty and damaging winds to the northern and central portions of the Phoenix area, including the community of North Scottsdale. According to a report from the public, gusty winds estimated to be at least 60 mph in strength blew down a number of trees onto a road near the intersection of Shea Boulevard and Hayden road, approximately 3 miles southeast of North Scottsdale. There were no reports of accidents due to the trees lying in the road. Damage reports were obtained via social media.

A powerful Pacific upper level low and associated cold front moved east across central and northern portions of the greater Phoenix metropolitan area during the early morning hours on November 29th. Due to elevated levels of wind shear and instability, the front generated several tornadoes in the Phoenix area, including one that tracked to the northeast from eastern Glendale into portions of north Scottsdale. According to a NWS storm survey, the tornado had a path length more than 8 miles and was estimated to be an Ef1 in strength. The tornado began just west of Phoenix Mountain Park and ended near the west side of the Scottsdale TPC Golf Course. There were a number of damage reports associated with the tornado along its path. Many of them were related to downed trees including some with diameters up to 3 feet across. A trained spotter 4 miles west of North Scottsdale reported that some trees fell on vehicles causing damage. Additionally, there were reports of roofs removed and damaged along the path of the tornado. Finally, about 6 miles east of Glendale, Channel 3 TV reported that a very large tree fell on a carport and caused it to collapse upon a car. The fallen tree was just south of Northern Avenue, between 7th and 3rd Avenues. Fortunately there were no reports of any injuries or fatalities.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across higher terrain areas east of Phoenix during the morning hours on November 29th. In addition to influence from frontal lift, isolated thunderstorms helped locally increase rain totals. The heavy rain resulted in some flash flooding that occurred around the Woodbury burn scar area. Based on data from a USGS stream gage, heavy rain on the burn scar caused a rapid rise of nearly 4 feet in Fish Creek Canyon, about 5 miles east of the town of Tortilla Flat. The most significant flash flooding occurred around 0815MST. There were no reports of accidents due to the flash flooding. A Flash Flood Warning was in effect at the time of the flooding.

A strong cold front associated with a powerful Pacific low pressure system moved across the greater Phoenix area during the early morning hours on November 29th. The cold front produced a very strong wind gust across the north portion of the Phoenix area. According to a mesonet wind station located about 2 miles southwest of Paradise Valley, a wind gust to 67 mph was measured at 0346MST. The strong gust occurred just west of the Paradise Valley Country Club.

A large Pacific upper low moving east across Arizona was accompanied by a strong cold front that moved across the greater Phoenix metropolitan area during the early morning hours on November 29th. Due to high levels of wind shear and instability, the front generated several tornadoes, one of which briefly moved through the community of Queen Creek at around 0450MST. According to a NWS employee, the tornado resulted in moderate damage, downing a number of trees as well as knocking down several power poles. Some roof damage was also noted. Fortunately there were no injuries reported. Damage surveys indicated that the tornado was on the ground less than 10 minutes and had a short path, with a width between 50 and 100 yards.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain over western portions of Maricopa County, including the community of Gila Bend, during the morning hours on November 29th. Isolated thunderstorms were present and they further increased rain totals. The heavy rain led to some flash flooding east of Gila Bend and along Highway 238. According to the Maricopa County Sheriff's Office and the department of transportation, flash flooding caused state route 238 to be closed from milepost 24 to Gila Bend. There were no reports of accidents due to the flash flooding.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across the western portion of Maricopa County during the morning hours on November 29th. Aided by frontal lift, isolated thunderstorms developed which enhanced rain totals. The heavy rain resulted in an episode of flash flooding over mostly open country, north of Interstate 10 and just east of the county line. According to a report at 0626MST from a county official, Eagle Eye road was closed from milepost 6 to milepost 13 due to flash flooding. The time of the actual flash flooding was about 0232MST and was based off of data from a Maricopa County Flood Control stream gage. The gage crested at 7.22 feet at 0208MST and the expected travel time of the flood wave was used to determine the time of flash flooding at Eagle Eye road. The location of the flooding was about 10 miles southeast of the town of Gladden. There were no reports of any accidents due to the flash flooding.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across western portions of Maricopa County during the morning hours on November 29th. Aided by frontal lift, isolated thunderstorms developed and enhanced rain totals. The heavy rain led to an episode of flash flooding over far west central Maricopa County near the Eagle Tail Mountains. According to a delayed report from the public, flash flooding resulted in Agua Caliente road becoming flooded and impassable where it crosses the Fourth of July Wash. The actual flash flooding occurred about 0207MST and was based off of data from a Maricopa County Flood Control District streamgage which showed the wash cresting at 2.2 feet; estimated travel time of the flood wave resulted in the time of the actual flash flooding. There were no reports of accidents due to the flash flooding.

Scattered thunderstorms developed across the western portions of the greater Phoenix area during the evening hours on September 16th. Some of the stronger storms generated damaging outflow winds that impacted the community of Buckeye. According to a local utility company, at 1936MST gusty winds estimated to be at least 60 mph in strength downed a number of power poles, about 2 miles northeast of Buckeye and near the intersection of Broadway Road and Miller Road. As a result, power outages were reported. No injuries were reported as a result of the falling poles or downed lines.

Isolated thunderstorms developed over the deserts to the southwest of Phoenix during late afternoon and early evening hours on September 1st and some of them affected the community of Gila Bend. One of the stronger storms produced two very powerful wind gusts. According to the official ASOS weather station located 5 miles to the south of Gila Bend, at 1851MST a wind gust to 75 mph was measured. Additionally, the ASOS also reported a gust to 60 mph a few minutes earlier, at 1839MST. There were no reports of damage or injuries associated with the powerful wind gusts.

A powerful winter storm continued to push east across Arizona on February 22nd; although the storm mainly generated moderate to heavy desert rain and higher elevation snow, it also produced a couple of funnel clouds during the afternoon hours. One such funnel cloud was reported in the town of Peoria. At 1435MST, a member of the public reported a funnel cloud just to the southwest of Padres field, about 1 mile northeast of Peoria. Radar data confirmed the rotation within this funnel. As the funnel did not touch the ground, no damage resulted, however due to the rarity of funnel clouds it generated some media attention.

A powerful winter storm continued to slowly move east across Arizona during the day on February 22nd, and moderate to locally heavy rain fell across portions of south-central Arizona including in the areas around Tortilla Flat. The rain led to episodes of small stream flooding; at 1240MST the Arizona Department of Highways reported that State Route 88 was closed at Tortilla Flat due to flooding; the flooding resulted from water from a creek overflowing the road making it impassable. Although Areal Flood Warnings were issued earlier in the day, they were not in effect at the time of the flooding in Tortilla Flat. No accidents or injuries were reported.

Thunderstorms with intense rainfall developed to the southeast of the greater Phoenix area during the very early morning hours on August 10th; peak rain rates with the stronger storms exceeded 2 inches per hour. The heavy rain led to flash flooding in the area around Queen Creek, including flooding in the Sonoqui Wash. At 0230MST, local law enforcement reported that Via Del Jardin was closed due to flash flooding along the Sonoqui Wash, about 2 miles west of Queen Creek. Later in the morning, at 0345MSt, local Queen Creek law enforcement reported that Power Road near Ocotillo Road was also closed due to flash flooding along the Sonoqui Wash. A Flash Flood Warning had been issued at about midnight for the area, but was allowed to expire at 0300MST. There were no reports of accidents or injuries due to the flash flooding.

Thunderstorms with locally heavy rainfall developed across the central and eastern portion of the greater Phoenix metropolitan area during the late evening hours on August 9th. Rainfall rates with the stronger thunderstorms reached or exceeded 3 inches per hour; a Flood Control District gauge 2 miles east of East Mesa measured 1.54 inches within a 30 minute period ending at 2335MST. At 2335MST a trained spotter located 3 miles north of East Mesa reported curb to curb residential flooding near the intersection of Power Road and McDowell Road. He indicated that one inch of rain fell within 20 minutes, and peak rain rates exceeded 5 inches per hour for a brief period. Despite the intense rains, Flash Flooding was not reported as of 2335MST.

Thunderstorms developed across the southeast portion of the greater Phoenix area during the late evening hours on August 9th; some of the stronger storms produced gusty and damaging outflow winds that affected communities such as Gilbert. According to a report from the public, at 2345MST gusty wind estimated to be as high as 65 mph downed a number of trees about 2 miles to the southwest of the Phoenix Mesa-Gateway Airport. The trees were downed near the intersection of Power Road and Germann Road. No injuries were reported.

Thunderstorms with gusty and damaging outflow winds moved across the northern portion of the greater Phoenix area during the evening hours on August 8th. Some of the stronger storms affected the northern portion of the town of Scottsdale. According to a report from local broadcast media, gusty winds estimated to be near 65 mph downed numerous power lines. The downed lines were in northern Scottsdale, north of the Pima Freeway and along Scottsdale Road. The numerous downed power lines trapped people in 7 cars; fortunately no injuries were reports. There were no reports of power poles downed however.

Thunderstorms with strong and gusty outflow winds developed across the eastern portion of the greater Phoenix area, including the community of Mesa, during the evening hours on August 8th. Some of the stronger storms generated gusty outflow winds in excess of 50 mph. According to a report from the public, at 1930MST gusty winds estimated as high as 70 mph downed a large tree. The downed tree was located about 2 miles north of East Mesa and near the intersection of McKelllips Road and Power Road. No injuries were reported.

A large cluster of intense thunderstorms moved north and across the Rainbow Valley community during the early evening hours on August 2nd. The stronger storms produced strong and damaging microburst winds estimated to be in excess of 70 mph. The strong winds damaged numerous homes in the area. According to the Buckeye Valley Fire Department, between 1800MST and 1830MST strong winds damaged between 10 and 15 homes in the Rainbow Valley area, west of Estrella Mountain Ranch and southeast of Buckeye. At least one home was completely destroyed; fortunately no one was in the home at the time of the damage. Some of the damaged homes appeared to be under construction and not completed structures. Fire department personnel also reported homes with major roof damage near 190th Avenue and Arlington Road, about 8 miles southwest of Goodyear. High tension power lines were also downed in the area. A Severe Thunderstorm Warning was issued for the area at 1812MST and it continued through 1845MST.

A large cluster of thunderstorms moved steadily north and through the southwest and western portion of the greater Phoenix area during the early evening hours on August 2nd. Some of the stronger storms produced gusty, damaging microburst winds that impacted the Estrella Mountain Ranch area to the south of Goodyear. City of Goodyear officials, as well as SRP personnel, reported that around 1830MST, damaging winds blew down 3 large metal transmission towers in a one mile stretch in the Estrella Mountain Ranch community. High tension power lines were downed as well; some of the lines as well as debris from collapsing towers fell on and damaged at least one home in the area. Wind gusts were estimated to be at least 80 mph to cause this damage; the SRP spokesman indicated that the large metal transmission towers should be able to withstand winds upwards of 100 mph, so the actual winds may have been even greater than 80 mph. Fortunately there were no reports of injuries. A Severe Thunderstorm Warning was issued for the area at 1812MST and it was in effect through 1845MST.

Thunderstorms with strong, gusty and damaging outflow winds moved through the northern portion of the greater Phoenix area during the evening hours on July 30th. Some of the stronger storms generated outflow winds in excess of 60 mph which produced damage along Highway 51 from the Loop 101 south through Greenway Road. At 1938MST a trained spotter 6 miles west of North Scottsdale, near Greenway Road and Highway 51, reported 4 inch diameter trees blown down along with some street signs. Power was out at 36th Street and Greenway Road. At about the same time, another spotter to the north, along Highway 51, reported trees blown down at 36th Street and Union Hills Drive. Another spotter reported a large tree down near Bell Road and Highway 51 at 1950MST. Wind gusts were estimated to be as between 60 and 70 mph when the damage occurred.

Thunderstorms with gusty outflow winds moved across the western portions of the greater Phoenix area during the evening hours on July 30th. Some of the stronger storms generated gusty outflow winds at least as high as 60 mph. The strong and gusty winds resulted in a power outage near and to the east of Luke Air Forecast Base, according to a trained weather spotter. The spotter indicated that power was out near the intersection of Glendale Avenue and Litchfield Road. No mention was made with regard to power lines or poles down in the area however.

Isolated thunderstorms developed in the central deserts west of Phoenix during the late evening hours on July 8th and some of the stronger storms affected the town of Buckeye. Gusty outflow winds in the area downed trees as well as power lines. According to a trained weather spotter located 2 miles northeast of Buckeye, at 2100MST gusty winds estimated to be as high as 60 mph uprooted two Palo Verde trees with bases around 8 inches in diameter. The downed trees were near the intersection of Baseline Road and Miller Road. Thirty minutes later, local broadcast media reported that gusty winds downed power lines about 3 miles west of Buckeye. The downed lines resulted in power being lost to about 14,000 people. No injuries were reported due to the downed power lines.

Scattered monsoon thunderstorms developed over the central portion of the greater Phoenix area, including downtown Phoenix, during the afternoon hours on August 3rd. Some of the stronger storms generated gusty and damaging winds as well as heavy rain. At 1720MST, Phoenix Fire and Rescue reported that a tree was blown down and into a home near the intersection of 48th Street and Thomas Road. Numerous power lines were also blown down in the area. Due to very heavy rain and associated runoff, some manhole covers were blown off and into the street. Additionally, at about the same time a trained spotter located near 52nd Street and Thomas reported numerous tree limbs snapping off of trees. The larger tree limbs were about 4 inches in diameter. Wind gusts that resulted in the damage were estimated to be as high as 65 mph.

Scattered monsoon thunderstorms developed over the central portion of the greater Phoenix metropolitan area during the late afternoon hours on August 3rd and some of them affected the downtown area near the Phoenix Sky Harbor Airport. Some of the stronger storms produced gusty and damaging outflow winds estimated to be as high as 65 mph. According to a report from the Park and Forest Service, at 1700MST gusty outflow winds downed multiple trees at the Phoenix Zoo; the winds also caused damage to some of the animal enclosures at the zoo. The zoo is just to the east of the airport and about 2 miles northwest of Arizona State University. At the same time, the Phoenix Storm Drain Department reported both a downed tree and a downed power pole about 3 miles to the northeast of the airport. Finally, at 1710MST broadcast media reported that strong winds downed a tree which caused a hole in a local roof. This occurred 3 miles northeast of the airport; the hole in the roof led to flooding within the damaged building.

Thunderstorms developed across the northern portion of the greater Phoenix area during the afternoon hours on August 3rd and some of them affected the area around Paradise Valley. Some of the stronger storms produced gusty, damaging outflow winds. At 1645MST, local broadcast media reported that strong wind downed power lines as well as several trees about 5 miles northeast of Paradise Valley. The downed trees were just south of Shea Boulevard, near North 38th Street. Additionally at 1700MST, the City of Phoenix Storm Drain Department reported several trees downed that were blocking the right of way and some sidewalks. These downed trees were about one mile to the north, just east of Highway 51 and just north of East Cactus Road. The wind gusts that created the damage were estimated to be around 60 mph.

Strong thunderstorms developed across the western portion of the greater Phoenix area during the afternoon hours on July 29th and some of the stronger storms affected areas around the town of Surprise and El Mirage. The storms generated gusty and damaging outflow winds estimated to be as high as 60 mph. According to a report from the public which included pictures, strong winds downed a number of trees as well as power lines just to the southeast of Surprise. The damage was southeast of the intersection of Litchfield Road and West Greenway Road.

Strong thunderstorms raced southwestward and into the greater Phoenix metropolitan area during the evening hours on July 29th and some of the storms impacted the community of Scottsdale. The stronger storms generated gusty and damaging outflow winds estimated to be in excess of 60 knots. According to a report from local broadcast media, multiple power poles were downed about 1 mile northwest of central Scottsdale. Pictures on social media depicted at least one power pole knocked down although the report did not specify exactly how many poles were downed. No injuries were caused by the fallen power poles.

Strong thunderstorms moved southwestward across the western portion of the greater Phoenix metropolitan area during the evening hours on July 29th. Some of the stronger storms produced gusty and damaging outflow winds well in excess of 60 mph. According to local law enforcement, at about 2050MST gusty winds downed multiple power lines in Buckeye and also overturned a horse trailer. The damage occurred near the intersection of Interstate 10 and North Miller Road.

Scattered thunderstorms developed across the greater Phoenix metropolitan area during the evening hours, and due to elevated moisture, instability and wind fields the stronger storms produced damaging outflow winds of at least 60 mph. Some of the winds produced damage in downtown Phoenix including the Arizona State Fairgrounds. According to a local broadcast media report, at 1925MST damaging winds blew down 7 power poles near 16th Street and Indian School Road, about 3 miles east of the fairgounds. Associated power lines then fell down and landed on a passing vehicle. Fortunately, no injuries were reported.

Thunderstorms developed across the greater Phoenix metropolitan area during the evening hours on September 13th, and some of them affected the western communities such as Buckeye. According to an article in the Arizona Republic, thunderstorm outflow winds estimated to be nearly 60 mph downed power lines in Buckeye and this resulted in the loss of power to about 4000 Buckeye residents. Some residents were still without power a day later. Although a Severe Thunderstorm Warning was not issued, a Significant Weather Advisory was issued for the area at 1944MST due to the strong wind potential.

Scattered thunderstorms moved across the central portion of the greater Phoenix metropolitan area during the evening hours on August 31st, and some of the stronger storms produced gusty and damaging outflow winds which produced damage in the vicinity of the Arizona State Fairgrounds. According to a broadcast media report, at 2016MST outflow winds estimated to be at least 65 mph downed a number of power poles near the intersection of 17th Avenue and Thomas Road. As the poles fell, power lines became draped across some of the houses in the area. The downed poles were located about 1 mile north of the fairgrounds. As reported in the Arizona Republic, the resulting power outage caused a significant loss of food at the St. Mary's Food Bank Alliance; between 50,000 and 60,000 pounds of dairy products stored at St. Mary's facility were lost. The facility was located near 31st Avenue and Thomas Road. According to Jerry Brown, director of public relations at St. Mary's, they are seeking donations to replenish the 100 thousand dollars in lost goods due to the soaring temperatures following the loss of power. Additionally, a trained weather spotter reported that strong winds blew down numerous trees at the intersection of 27th Avenue and Van Buren Street, about 2 miles southwest of the fairgrounds.

Scattered thunderstorms moved across the central portion of the greater Phoenix metropolitan area during the evening hours on August 31st, and some of the stronger storms produced gusty and damaging outflow winds which produced damage in the vicinity of the Arizona State Fairgrounds. According to a broadcast media report, at 2016MST outflow winds estimated to be at least 65 mph downed a number of power poles near the intersection of 17th Avenue and Thomas Road. As the poles fell, power lines became draped across some of the houses in the area. The downed poles were located about 1 mile north of the fairgrounds. As reported in the Arizona Republic, the resulting power outage caused a significant loss of food at the St. Mary's Food Bank Alliance; between 50,000 and 60,000 pounds of dairy products stored at St. Mary's facility were lost. The facility was located near 31st Avenue and Thomas Road. According to Jerry Brown, director of public relations at St. Mary's, they are seeking donations to replenish the 100 thousand dollars in lost goods due to the soaring temperatures following the loss of power. Additionally, a trained weather spotter reported that strong winds blew down numerous trees at the intersection of 27th Avenue and Van Buren Street, about 2 miles southwest of the fairgrounds.

Scattered thunderstorms moved across the southeastern portion of the greater Phoenix metropolitan area during the evening hours on August 31st; some of the stronger storms generated gusty and damaging outflow winds estimated to be as high as 70 mph. According to a trained weather spotter located just south of Dobson Ranch, or 3 miles south of the Fiesta Mall, strong winds uprooted a tree with a diameter of 8 inches. The winds also snapped a tree nearly 1 foot across and as the tree fell it brought down a nearby power pole. Metal siding was damaged on a temporary building in the area. The damage occurred near the intersection of Alma School Road and West Elliot Road.

Thunderstorms developed across the greater Phoenix metropolitan area during the evening hours on August 29th, and some of the stronger storms generated gusty and damaging outflow winds which affected the city of Mesa. According to a trained weather spotter, at 2000MST winds gusts estimated to be at least 60 mph blew down 5 to 6 power lines at the intersection of Broadway Road and South Lindsay Road in east Mesa. The gusty winds also ripped off some roofing tiles and blew them into the road. Small hail, one half inch in diameter, also occurred with the storms.

Thunderstorms moved across the western portion of the greater Phoenix metropolitan area during the afternoon hours on August 27th; some of the stronger storms produced gusty and damaging outflow winds estimated to be as high as 70 mph. At 1600MST, local emergency managers reported that power poles were downed on Glendale Avenue from Glen Harbor Boulevard to El Mirage. This location was about 2 miles west of the Glendale Sports Complex. About 30 minutes later, trained weather spotters 4 miles west of Luke Air Force Base reported power poles and power lines downed by the strong thunderstorm outflow winds. No injuries were reported due to the strong winds.

Scattered thunderstorms brought gusty and damaging microburst winds to the southeast part of the greater Phoenix area during the evening hours on August 11th, and they especially affected the community of Chandler. According to a trained weather spotter located about 2 miles southwest of the Phoenix Mesa-Gateway airport, microburst winds estimated to be at least 70 mph in strength downed seven large trees in a neighborhood near Power Road and Germann Road. The trunk diameters ranged from six inches to two feet. In addition, a railroad crossing arm was damaged by the strong winds at the intersection of Power and Pecos.

Thunderstorms with gusty and damaging outflow winds developed over portions of the greater Phoenix metropolitan area during the afternoon hours on July 31st. A few of the stronger storms affected the northern communities such as Paradise Valley and Deer Valley. According to local broadcast media, at about 1600MST power poles were blown down in an area about 3 miles north of North Mountain Park. This location was just south of West Bell Road, near 17th street. The damaging wind gusts were estimated to be over 65 mph. Fortunately, no injuries were reported.

Scattered thunderstorms developed across the greater Phoenix metropolitan area during the evening hours on July 6th, and some of them produced gusty and damaging microburst winds estimated to be at least 60 knots in strength. According to a trained weather spotter in the southwest portion of the Phoenix area and to the south of the community of Goodyear, at 1900MST gusty outflow winds downed one wooden power pole along Rainbow Valley Road north of Queen Creek Road. Additionally, an adjacent power pole had it's top snapped off by the high winds.

Strong thunderstorms developed across central Arizona during the evening hours on June 29th, and the more intense storms generated gusty and damaging microburst winds. Some of the stronger storms affected the community of Wickenburg. According to the Wickenburg Fire Department and Rescue, at 2118MST gusty microburst winds downed several large trees located about 1 mile northwest of Wickenburg. The trees were estimated to be 4 feet in diameter. The winds also blew down a number of power poles in the area. The wind gusts were estimated to range from 60 to 80 mph. Fortunately, no injuries were reported due to the strong winds.

Southeasterly monsoonal circulation spread increasing moisture into the south central deserts, which led to the development of isolated thunderstorms over the greater Phoenix area during the late afternoon and evening hours on June 27th. According to a trained spotter just to the northeast of the Musical Instrument Museum in north Scottsdale, gusty thunderstorm outflow winds estimated to be at least 60 mph snapped a power pole at the base.

A severe squall line moved east across the western portion of the greater Phoenix metropolitan area during the middle of the afternoon on September 27th, and the associated thunderstorms brought gusty and damaging winds to communities such as Glendale. According to a report from local broadcast media, damaging microburst winds estimated to be as high as 65 mph blew down a power pole near the intersection of West Thunderbird Road and North 59th Avenue, about 3 miles north of Glendale Municipal Airport. The power pole fell on a car and blocked the road.

A severe squall line moved east across the western portion of the greater Phoenix metropolitan area during the middle of the afternoon on September 27th, and the associated thunderstorms generated gusty and damaging microburst winds in portions of the community of Glendale. According to a trained weather spotter located just to the southwest of the Arizona State University West Campus, gusty winds estimated to be at least 50 mph caused roof damage and also blew down an awning in a local trailer park. In addition, the strong winds caused a power outage in the area. Locally heavy rainfall accompanied the passage of the squall line; 1.5 inches of rain was measured within 30 minutes and street flooding occurred as a result.

A severe squall line moved east across the eastern portion of the greater Phoenix area during the middle of the afternoon on September 27th, and the stronger thunderstorms produced damaging winds that affected communities such as Mesa. According to a National Weather Service Employee in east Mesa, gusty microburst winds estimated to be nearly 70 mph blew down a large tree with a diameter of two feet. The tree, located near the intersection of North Power Road and East McKellips Road, fell down and blocked a roadway.

A line of powerful thunderstorms moved east and across the central portion of the greater Phoenix metropolitan area during the early afternoon hours on September 27th. In addition to strong winds, the storms produced very heavy rain with peak rain rates in excess of 2 inches per hour. The heavy rain led to significant urban flooding and flash flooding across central Phoenix. According to a local broadcast media report, at 1511MST the heavy rains flooded the underpass at Interstate 17 and Grant Road, located about 1 mile northwest of the Arizona State Fairgrounds. The flooding caused the interstate to become impassable and created very hazardous driving conditions. Initially an Urban and Small Stream Flood Advisory was in effect for central Phoenix, however it was upgraded to a Flash Flood Warning at 1530MST. The warning remained in effect through 1830MST. Fortunately, no injuries were reported due to the flash flooding.

A line of powerful thunderstorms moved east across the greater Phoenix area during the early afternoon hours, followed by additional thunderstorm development which continued into the evening on September 27th. The stronger thunderstorms produced heavy rain with peak rain rates in excess of 2 inches per hour. The rain led to significant and widespread urban street flooding across the greater Phoenix metropolitan area, resulting in the issuance of both Urban and Small Stream Flood Advisories and Flash Flood Warnings. According to a trained weather spotter in Tempe, a storm total rainfall amount of 2.14 inches was measured as of 1720MST. Another trained spotter 2 miles west of Fountain Hills measured the exact same amount in a 3 hour period ending at 1728MST. At 1440MST, a trained spotter 2 miles southeast of Glendale reported flooded roadways with water covering the wheel wells of vehicles. At 1517MST, a trained spotter 4 miles south of Goldfield Ranch reported flooded roads, with some roads impassable. At 1625MST a trained spotter 3 miles northwest of Phoenix Sky Harbor Airport reported that the intersection of 24th Street and Thomas Road was flooded and impassable.

Scattered thunderstorms developed across portions of the greater Phoenix metropolitan area during the evening hours on August 25th, and some of the storms affected the town of Buckeye. The stronger storms produced gusty and damaging outflow winds with peak gusts estimated to be nearly 60 mph at times. According to a report from the Buckeye Police Department, strong thunderstorm winds knocked down multiple power poles about one mile east of town. The downed power poles caused local traffic to be shut down or diverted. No injuries were reported due to the fallen power poles.

Thunderstorms with damaging microburst winds developed across the northern portions of the greater Phoenix metropolitan area during the late evening hours on July 26th. Some of the storms affected communities such as Deer Valley and North Mountain Park. A trained weather spotter just to the southwest of Deer Valley Municipal Airport reported that numerous power poles were blown down near the intersection of 7th Avenue and Deer Valley Road. Wind gusts were estimated to be close to 70 mph. Additionally, another trained spotter a bit further south, about 3 miles north of North Mountain Park reported a number of trees blown down. Street flooding was also occurring in the same location.

Thunderstorms with strong damaging microburst winds developed across the northern portion of the greater Phoenix metropolitan area during the late evening hours on July 26th, affecting communities such as Deer Valley and Scottsdale. The powerful outflow winds, estimated to be at least 70 mph at times, created significant damaged to trees and power poles in the area near Desert Ridge Marketplace. A meteorologist reported that huge trees were blown down at an apartment complex located at Greenway Road and 40th Street. The trees crushed several cars at the complex. Power poles and lines were also downed by the strong winds. At about the same time, a trained spotter reported numerous large trees downed near Greenway and 44th street. Finally, according to local Fire and Rescue, more trees and power lines were blown down on Greenway Road between Tatum and 41st street.

Thunderstorms with damaging microburst winds developed across the northern portions of the greater Phoenix metropolitan area during the late evening hours on July 26th. Some of the strongest storms of the evening occurred in the area around Desert Ridge Marketplace. A trained weather spotter reported estimated peak wind gusts to 69 mph. The gusts produced significant damage in the area as well as knocking out power.

Scattered thunderstorms developed across the greater Phoenix area during the evening hours on July 14th, and some of them produced damaging outflow winds estimated to be at least 60 mph. A broadcast media report indicated that both power lines and trees of unknown size were blown down about 2 miles to the southwest of Camelback Mountain. A Severe Thunderstorm Warning was issued for these storms, beginning at 1833MST and continuing until 1930MST.

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the southeastern portion of the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed, isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates up to two inches per hour had occurred during the late morning and this led to flash flooding between Sun Lakes and San Tan Valley. According to broadcast media reports, at approximately 1200MST there was flooding near the intersection of Riggs and Power Roads. A Flash Flood Warning was issued for the area at 1109MST and it remained in effect through 1230MST. Additional rains continued in the area into the afternoon hours, leading to the issuance of an Urban and Small Stream Flood Advisory.

Scattered to numerous showers and thunderstorms developed across the greater Phoenix metropolitan area, including the community of Mesa, during the morning hours on September 7th. Peak rainfall rates at the height of the storm were in excess of 2 inches per hour, based on radar estimates and rain gage reports. The excessive rain led to an Urban and Small Stream Advisory at 934 am, followed shortly afterward by a Flash Flood Warning which included the community of Mesa. The warning was in effect until 1130 am. According to a on-line article on ABC15.com, the Mi Casa Rehabilitation Center - a retirement community - was filled with water. The center was built around a canal, so the excessive rain caused the area to flood, with flowing water several feet deep reported in some parts of the community. Fortunately, the buildings and surrounding homes were built on elevated platforms, so they were not threatened by the flash flooding. In addition, a canal near Broadway and Power roads overflowed, trapping a motorist in the flood waters. The car, as seen on a taped ABC 15 interview, was nearly submerged in the middle of the flooded canal.

Scattered to numerous showers and thunderstorms developed across the greater Phoenix metropolitan area, including the community of Mesa, during the morning hours on September 7th. Peak rainfall rates at the height of the storm were in excess of 2 inches per hour, based on radar estimates and rain gage reports. The excessive rain led to an Urban and Small Stream Advisory at 934 am, followed shortly afterward by a Flash Flood Warning which included the community of Mesa. The warning was in effect until 1130 am. According to a on-line article on ABC15.com, the Mi Casa Rehabilitation Center - a retirement community - was filled with water. The center was built around a canal, so the excessive rain caused the area to flood, with flowing water several feet deep reported in some parts of the community. Fortunately, the buildings and surrounding homes were built on elevated platforms, so they were not threatened by the flash flooding. In addition, a canal near Broadway and Power roads overflowed, trapping a motorist in the flood waters. The car, as seen on a taped ABC 15 interview, was nearly submerged in the middle of the flooded canal.

Scattered to numerous showers and thunderstorms developed across the greater Phoenix metropolitan area, including the community of Mesa, during the morning hours on September 7th. Peak rainfall rates during the height of the storms, based on radar estimates and rain gage reports, exceeded 2 inches per hour. Heavy rain began by 830 am, and later prompted the issuance of a Flash Flood Warning at 953 am. The warning, which included Mesa, ran through 1130 am. According to an on-line article seen on ABC15.com, heavy rains sent a river of water washing across University Drive at Power road in Mesa. The river of flowing water was at least 2 feet deep in some places, and it stopped 4 drivers dead in their tracks. The water was up past the door on several vehicles, and caused some of them to float. Mesa and Rural Metro firefighters came to the rescue of the stranded drivers and pulled them all to safety. In a taped ABC 15 interview, neighbors who lived near Power Road and University for decades said that they were scared by the strength of the storms. Wendy Kruse said that it was the worst that she had ever seen.

Southeast flow ahead of a vigorous upper level low pressure system spread moisture into south central Arizona on May 9th. This led to the development of scattered thunderstorms over the central deserts during the afternoon and early evening hours. A few storms in the greater Phoenix area produced damaging microburst winds, estimated to be 50 knots or higher. According to SRP, a local utility company, the winds downed 9 12-kilovolt poles, most of them in north-central Phoenix. Over 4800 people were without power at the peak of the storms.

A cold front moved east across the greater Phoenix area during the late evening hours on November 4th. Isolated weak thunderstorms developed in the vicinity of the cold front. The combination of the front and the thunderstorm downdrafts produced gusty and damaging winds. A trained weather spottered reported that strong winds blew down a tree 1/8th of a mile west of the intersection of Germann and Power roads in Gilbert. The spotter estimated the tree height at 20 feet, and the diameter at 1 foot. Peak wind gusts were estimated to be around 60 knots.

Isolated to scattered showers developed across the central Arizona deserts during the evening hours on September 24th. No lightning was reported in the greater Phoenix area, however the very dry lower atmosphere allowed strong gusty winds to develop near the showers and associated virga. A local utility company reported that power lines were downed on Sherman Street between 19th Avenue and 23rd Avenue, and resulted in the loss of power to 1100 customers. The damaging winds were sub severe and according to radar estimates and surrounding observations ranged from 40 to 45 mph.

Scattered thunderstorms with strong damaging winds moved across eastern portions of the greater Phoenix area during the evening hours on September 10th. According to reports from local broadcast media, 7 power poles were downed in the city of Mesa at the intersection of University Drive and 70th Street. Winds were estimated to be near 60 knots.

Isolated high based thunderstorms developed in the Wickenburg area during the late afternoon hours on August 26th. The storms generated strong gusty winds, estimated by local law enforcement to be upwards of 70 mph. The strong winds downed several power poles which caused the area near North Vulture Mine Road and Easy Street to be closed to traffic.

Thunderstorms produced damaging microburst winds across portions of the northwestern greater Phoenix area during the evening hours on August 3rd. According to reports from local broadcast media, 8 power poles were blown down on 59th Avenue between Union Hills and Bell road in Glendale. Also, there was a residential roof collapse and fire due to the downed power lines along that same stretch of 59th Avenue and Michigan.

Strong thunderstorms over central Phoenix produced damaging microburst wind gusts estimated by weather service radar to be approximately 60 mph. As reported by several local media sources, the winds downed several power poles and damaged residential structures in the vicinity of 27th Avenue and Van Buren. The damage included backyard sheds as well as roof shingles. Damage occurred near 930 pm on the evening of July 31st.

Isolated high based thunderstorms developed over the northern portions of the greater Phoenix area during the afternoon hours on the 2nd of July. The storms generated gusty damaging microburst winds which toppled 17 power poles near 32nd street and Greenway road. The wind gusts were estimated to be near 50 knots.

High winds with nickel sized hail caused damage to cars, trees downed and power poles damaged.

A series of powerful storms caused major damage to SRP facilities and power poles. Thirteen power poles for a 69/12-kilovolt distribution line along the Western Canal near Dobson road in Mesa were knocked down. Twelve of the poles landed on homes causing considerable damage. As many as 20,000 customers were temporarily without power. All told, there were at least 40 utility poles downed in southwest Mesa, which damaged 20 to 30 homes.

A trained spotter reported that power poles were blown down at 19th Avenue and Dunlap. The poles were downed by thunderstorm microburst winds estimated to be in excess of 50 kt.

Power poles were blown down at 19th Ave and Dunlap.

Strong thunderstorms over Scottsdale generated microburst winds which toppled several power poles. Winds were estimated in excess of 50kt.

An amateur radio operator in northeast Mesa reported an eight inch diameter tree blown down near Power and McDowell roads.

An amateur radio operator reported power poles blown down near University Avenue and Signal Butte road in western Apache Junction. Microburst wind gusts were estimated to be approximately 60mph.

About 7 power poles were downed by thunderstorm winds.

APS power lines were down from flood waters in the Salt River.

Nine power poles and 4 trees knocked down at Scottsdale Road and Mayo Blvd.

Nine power poles and 4 trees knocked down at Scottsdale Road and Mayo Blvd.

Several power poles damaged near Van Buren and Central.

Trees were uprooted near 56th street and Indian School Road. Power lines were downed by winds and left abou 15,000 customers without electricity.

About 65 power poles were blown down in the Gila Bend area due to very strong microburst winds. About 2300 APS customers were left without power. The NWS storm survey indicated the straight line winds were generally from the southwest. One wind speed indicator near Gila Bend went off the chart at 100 mph. There was considerable damage to buildings and homes in the area. The airbase was also affected with several buildings dstroyed.

About 65 power poles were blown down in the Gila Bend area due to very strong microburst winds. About 2300 APS customers were left without power. The NWS storm survey indicated the straight line winds were generally from the southwest. One wind speed indicator near Gila Bend went off the chart at 100 mph. There was considerable damage to buildings and homes in the area. The airbase was also affected with several buildings dstroyed.

According to Arizona Public Service, 48 power poles across a distance of 3 miles were blown down along Old Highway 80 between Buckeye and Gila Bend. Winds were measured up to 56 mph on the Palo Verde Nuclear Generating Station tower.

Easterly winds gusted up to 65 knots at Sky Harbor airport. Several aircraft and at least one terminal building was damaged, with debris blown onto the runways and adjacent areas. About 500 people were stranded in the terminals overnight due to flight delays and power outages.

Trees and power lines down.

A trained spotter reported a wind gust of 85 mph at 16th St and Thomas. Widespread damage occurred to homes, businesses and windows knocked out in at least one high-rise. Numerous power poles were taken down, and many trees uprooted. Some damage also occurred at the Arizona State Capitol in Phoenix.

Several crashes on the Loop 202 were blamed on strong winds and rain. Power outages were reported after winds and rain moved through the East Valley. SRP reported about 3,000 customers were left without electricity...and APS reported 2,000 customers without power.

Power poles and lines reported blown down. As many as 70 poles were down in the Buckeye area alone.

Power poles down in central Phoenix.

Power lines down near 7th Street and Northern.

Winds knocked a power line onto the street.

Power poles and trees were reported down at Chandler Heights and Greenfield roads, as well as Ocotillo and Higley and at Ocotillo and Power roads.

Microburst winds took down a total of 55 power poles in Mesa, leaving as many as 12,000 SRP customers without power. About 31 homes were damaged at a trailer park on North Recker, 4 of those had roofs blown off. On Southern Ave near Power Road, 15 poles were knocked down with lines impacting 7 vehicles, including a bus. The peak wind speed at Falcon Field was 44 mph at 7:47 pm. In Mesa, power poles were knocked down, trapping 6 vehicles, including a bus. One of the injuries was from cuts from broken glass.

Microburst winds took down a total of 55 power poles in Mesa, leaving as many as 12,000 SRP customers without power. About 31 homes were damaged at a trailer park on North Recker, 4 of those had roofs blown off. On Southern Ave near Power Road, 15 poles were knocked down with lines impacting 7 vehicles, including a bus. The peak wind speed at Falcon Field was 44 mph at 7:47 pm. In Mesa, power poles were knocked down, trapping 6 vehicles, including a bus. One of the injuries was from cuts from broken glass.

Winds caused power outages and property damage due to microburst winds as high as 65 mph. Winds blew down a tree near 78th Street and McDonald which damaged a covered parking structure.

Winds caused power outages and property damage due to microburst winds as high as 65 mph. Winds blew down a tree near 78th Street and McDonald which damaged a covered parking structure.

Large trees down...including a 50 foot pine tree near Southern avenue and Greenfield road. Four homes damaged near Sossaman road and Main street. Power lines were down near Main street and Southern avenue.

Between Buckeye and Gila Bend trees were uprooted...signs blown down and one roof blown off a shop. Two miles south of Cotton Center a power pole snapped because of the winds.

Trees and power lines were downed through parts of Gilbert. Streetlights were also reported to be down due to the winds. Utility poles and at least one large billboard in the East Valley were damaged by winds.

Power line downed by high winds. Winds gusted to 55 mph at Sky Harbor airport. While walking in his yard, a man touched the live wire and was electrocuted.

Several cities throughout the central portion of Maricopa County had major wind damage as a series of thunderstorms and microbursts moved across the area. According to the Salt River Project, an estimated 65 power poles were blown down, in parts of Scottsdale, Tempe and Mesa. At one point, about 20,000 customers were without power. Arizona Public Service reported about 8,000 customers were without power. At Phoenix Sky Harbor Airport, the official peak wind gust was 59 mph. However, winds at Williams Gateway Airport gusted to 86 mph and flipped a small twin-engine plane atop another aircraft. In Mesa, 35 schools reported damages due to the storm. In addition to numerous trees and homes damaged by winds, locally heavy rainfall caused some flooding of streets thoughout the Valley. One of the heaviest amounts was 2.70 inches at Crossroads Park.

Power poles down and roofs damaged due to strong thunderstorm winds.

Power lines down in south Phoenix. At the height of the storm, more than 40,000 APS customers were without power. The Phoenix Fire Department responded to 200 calls for service. Two large trees were uprooted at the Wigwam Resort and Golf Club.

Several lines or clusters of thunderstorms developed along a moisture boundary that extended from near Gila Bend to Payson. Microburst winds over 55 mph took down trees, power lines, and damaged homes and buildings over parts of eastern Maricopa County. In Mesa, about 130 trees were blown down at a cemetery, and a large funeral canopy was blown 200 feet onto a car at a neighboring apartment.

Thunderstorm winds blew power lines down in Mesa. A home in the 2200 block of west McNair in Chandler was destroyed by fire when 3 palm trees nearby were struck by lightning and the fire spread to the home.

Winds damaged buildings and ripped limbs from trees. About 1,800 customers in Phoenix were left without power after power poles and lines were downed by strong winds.

Thunderstorms were widespread across Maricopa County, from Queen Creek to Wittmann from 1925 MST to 2130 MST. Microburst winds hit the north part of Tempe and took out stoplights at most of the city's major intersections. Winds tore down tree limbs and caused power outages, with about 30,000 customers losing power. Lightning struck trees and homes, and some street flooding was reported. Chandler airport had a peak wind speed of 64 mph at 8 pm. Sky Harbor airport closed its runways for about 40 minutes, until 9 pm, as winds peaked at 56 mph. Phoenix Fire Department responded to six house fires, 20 tree fires, 75 downed power lines, and numerous fender benders.

Winds toppled about 10 power poles near Lindsay and Pecos roads.

The second of two microburst events struck on the airport at the Postal facility and the West economy parking lot. A large thunderstorm complex, with strong microburst winds estimated at 100 mph struck Sky Harbor International Airport. Southerly winds and dense blowing dust initially spread across the East valley and converged with a fast-moving thunderstorm in North Phoenix. These merging systems developed into a severe thunderstorm with winds that uprooted trees, took down power poles and damaged homes and businesses near the airport. Several hangars sustained major damage. Flying debris damaged five commercial aircraft, several private planes and hundreds of cars in the nearby parking lots. Numerous flights were diverted during the overnight hours due to the debris that was scattered on the runway.

Microburst winds heavily damaged the Arizona Public Service power sub-station at 7th Ave and Thomas. Widespread damage was reported across the greater Phoenix metropolitan area caused by the storm's high winds and heavy rainfall with up to 2 inches in 90 minutes. Utility companies reported that 22 power poles were downed, leaving at least 47,000 homes and businesses without power electricity for many hours. Homes in Scottsdale and Ahwatukee were struck by lightning and set on fire.

Winds took down 3 power poles about 5 miles east of Tonopah. Power was out for about 2 days in a 30 mile radius.

Thunderstorms developed over a large area of the metropolitan area. Lightning struck the towers on Mummy Mountain and knocked out the Paradise Valley Police Department communication system.Lightning was also blamed on causing a house fire on 35th Avenue and starting tree fires in Scottsdale. High winds were reported at 16th and Roosevelt and at 23rd Avenue and Dobbins where power poles were knocked down. Small hail accompanied these storms.

Winds blew down power poles and lines. Heavy rain resulted in a large roof collapse at a business near 35th Ave and Bell. Some homes sustained damage. Urban street flooding was also widespread across the northern sections of the city.

A line of thunderstorms formed rapidly over northern Maricopa County and affected many communities from Wickenburg to Carefree. The town of Wittman was especially hard hit as 38 power poles were downed by very high winds. Arizona Public Service also reported 1600 customers lost power.

A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th. Strong southerly flow out ahead of the low pressure system brought in highly anomalous moisture content across the southern half of Arizona, with PWATs surging to 1.1-1.4, which are near record values for mid-October. Along with the highly anomalous moisture values, moderate to high instability values were also present with MLCAPE rising to 1000-1500 J/KG. Bulk shear values between 25-35 kts were also present. The combination of the highly anomalous moisture content, instability, and shear along with the strong dynamic forcing to the east and north of the low pressure system was a recipe for these showers and thunderstorms to produce flash flooding as well as severe wind gusts and hail. The greatest flash flood impact occurred along portions of western Maricopa County in the area from Buckeye to Tonopah, The greatest damaging wind impact occurred in the Tonopah area, where two rounds of severe thunderstorms, one hour apart, impacted causing widespread power outages due to downed power poles, destroyed two mobile homes, damaged dairy farm structures, and resulted livestock losses. Severe hail was also reported with a storm that moved into the Mesa to Scottsdale area during the overnight period. ||As the area of low pressure moved eastward on the 16th, lingering moisture resulted in the development of more showers and thunderstorms, mainly concentrated across the higher terrain areas east of Phoenix. One isolated storm in particular developed on a open field near Sun Lakes, resulting in the development of a short-lived landspout during the mid-afternoon hours with no damages reported.

Daytime heating combined with divergence aloft associated with an easterly wave near the Arizona/New Mexico border promoted thunderstorm initiation across southeast Arizona during the afternoon of the 30th. Outflow boundaries generated from these thunderstorms raced northwest toward south-central Arizona, resulting in a dust storm in Pinal County where multiple instances of dense blowing dust less than 1/4 mile were reported. New thunderstorm development occurred along these boundaries with some thunderstorms becoming severe. Numerous instances of damaging winds were reported across the Phoenix area and down into northwest Pinal County, which included multiple downed trees and power poles. A very moist environment, with PWATs in excess of 1.80 allowed for thunderstorms to become efficient heavy rainfall producers. Rainfall amounts upwards of around 1.50 within an hour were reported during the event. There were multiple reports of flash flooding across northern parts of the Phoenix area, leading to several water rescues and making some roads impassable. Flash flooding also led to water and mud entering some apartments in north Phoenix causing extensive water damage. Isolated flash flooding occurred across Pinal, Gila, and Yuma Counties. No injuries were reported with this event.

Mid-level flow of 25-30 kts and divergence aloft combined with sufficient MLCAPE of greater than 1000 J/kg to result in an environment favorable for the development of organized severe thunderstorms. A cluster of thunderstorms developed across southeast Pinal County during the late afternoon hours and moved northwestward through the Phoenix Metro after dark while becoming severe in the process. One of the more significant damage areas was along SR-87 in Salt River Reservation Community, where a mobile home and trailer park were destroyed and large transmission lines were downed. Power was knocked out for some for more than 2 days. A large dust storm also impacted parts of Pinal County.

Adequate moisture and instability in place across south-central Arizona on the 14th allowed for thunderstorm development to occur across the high terrain areas of Arizona during the afternoon. Going through the evening hours, multiple outflow boundaries descended into the Valley triggering additional thunderstorm development in the lower deserts. Some of these thunderstorm became strong, including one thunderstorm that developed over the Queen Creek area, producing strong winds. As a result of the strong winds, multiple trees and power poles were knocked down in Queen Creek. No injuries were reported.

Outflow boundaries originating from distant thunderstorms converged on the valley floor during the evening hours. This combined with a pocket of upper-level divergence as analyzed by the SPC mesoanalysis resulted in the development of a strong thunderstorm over Chandler. Other weaker thunderstorms developed across the valley as well from the resulting outflow boundaries. A strong thunderstorm that developed near Morristown caused downed powerlines, resulting in the closure of US-60. No injuries were reported.

An upper-level low located over the Great Basin produced cooler than normal 500 mb temperature of between -9 and -10C and also some upper-level diffluence with a 50-60 kt jet at upper-levels. Moisture levels were also above normal with precipitable water values between 1.0-1.3 inches. The combination of all of these factors resulted in sufficient instability with MLCAPE values approaching 1000 J/KG while DCAPE values were approaching 1500 J/KG. Thunderstorms began to develop during the early to mid-afternoon hours across most of southern and central Arizona, with strong to locally damaging winds as well as dense blowing dust being the main hazards along with locally heavy rainfall. One of the damaged areas came just northwest of Stanfield, where there were multiple downed power poles as well as a rolled over RV. There were also visible photos from social media as well as from seasoned storm chasers of a couple of landspouts, one near damaged area just northwest of Stanfield and another over Buckeye. With respect to the landspout that developed just northwest of Stanfield, there was no confirmation that it was responsible for the damage observed, which most likely was due to downburst wind. No injuries were reported with these thunderstorms.

Strong to severe thunderstorms developed in an unstable atmosphere in the afternoon of the 22nd. Storms initially developed over the high terrain of northern and eastern Arizona as well as near the Table Top mesa area south of Phoenix. High DCAPE promoted strong thunderstorm downbursts. The downbursts generated outflows that progressed into the greater Phoenix metro area and led to the development of additional scattered thunderstorm. The thunderstorms in the metro area produced damaging winds that led to numerous downed trees, downed power poles, and other property damage. The storms were also nearly stationary, under weak steering flow, and produced very heavy rainfall with rain rates around 1.5-2.0 inches per hour and briefly higher in the strongest storms. This led to considerable flash flooding around Phoenix with several road closure and significant flow in major washes. Even after the strongest storms in Phoenix subsided in the late evening of the 22nd, areas of moderate to heavy rain continued from northeast to southwest through the night and through mid-afternoon on the 23rd. The continued rain through the 23rd was aided by a strengthening diffluent flow regime between the monsoon high to the north and a retrograding upper low moving west through New Mexico. Additional significant flash flooding was observed on the 23rd, mostly in the foothills north of the Phoenix metro, with many road closures, flowing washes and creeks, and some water rescues.

With upper level high pressure centered near Las Vegas, Nevada this promoted increased northeasterly flow through central and southern Arizona. 30-35 kts of 0-6 km bulk shear was analyzed over south-central Arizona under this regime and with 1000-1500 J/kg of MLCAPE, organized strong to severe thunderstorms developed over the Mogollon Rim in the afternoon and spread through the lower deserts of south-central Arizona through the evening hours. Two severe multi-cellular clusters progressed off the high terrain into the lower deserts of Pinal and Maricopa counties and eventually merged together in northwest Pinal county before continuing southwest. The severe storms produced widespread 40+ mph wind gusts with many areas of 60-70 mph gusts. There were numerous toppled trees, downed power lines, damaged roofs, and other infrastructure and property damage as a result of the severe winds. Over 35,000 customers across Phoenix also lost power. The severe winds also produced a dust storm out ahead of the storms with widespread dense blowing dust pushing west through northern Pinal and southwest Maricopa counties. There was also an area of dense blowing dust reported in the North Phoenix foothills with the northern multi-cell cluster. This was the second day in a row with severe winds moving through some of the same areas.

Thunderstorms developed along the Mogollon Rim during the early part of the afternoon on the 9th. Relatively strong easterly mid level anticyclonic flow associated with the upper level ridge centered near the Arizona/Utah state line helped allow strong to severe thunderstorms to propagate westward into the lower deserts. The severe thunderstorms led to damaging winds gusts upwards of 60-65 mph across southeast portions of the Phoenix metro. Thee severe winds ahead of the thunderstorms also produced a dust storm that led to widespread reports of dense blowing dust across central and southeastern Phoenix and as far south as Casa Grande. A few isolated instances of flash flooding occurred as well, including the recent Telegraph burn scar where over 0.75 of rain fell. There were numerous reports of damage across eastern parts of the Valley, including numerous power poles and large trees down. No injuries were reported with these thunderstorms.

Strong thunderstorms developed in the afternoon over the high terrain of central and southern Arizona before spreading to the lower deserts through the evening, with new development driven mostly by strong outflow boundaries. The primary outflow boundary moved southwest with widespread 30-40 mph wind gusts observed across south-central Arizona and a few stronger gusts, including a 59 mph gust in southern Gila county. The winds were strong enough to cause hundreds of power outages in the Phoenix metro area and generate dense blowing dust over the open deserts in Pinal and western Maricopa counties. With above normal moisture levels, storms also produced localized flash flooding mostly in foothill/high terrain areas, including flash flooding enhanced by recent burn scars.

A strong winter storm and its associated cold front rolled through the central Arizona deserts on January 25th, leading to widespread wind damage across much of the greater Phoenix metropolitan area. A line of strong to severe thunderstorms associated with the front generated wind gusts in excess of 60 mph in some locations and the gusty severe winds downed numerous trees, caused damage to roofs and fencing, and in southwest Mesa managed to blow a rooftop air conditioner off of the roof. More than 30,000 utility customers across the Valley lost power at the height of the storm as numerous power poles were snapped or blown over. Several Phoenix area outdoor COVID-19 vaccination sites saw some minor damage to the tents and overall setup from the strong winds, which led to some delays. Rain cooled air associated with the strong storms lowered afternoon temperatures at Phoenix Sky Harbor airport from around 50 degrees to 36 degrees in 25 minutes. Many areas saw pea-sized hail as the storms moved through the Valley. There were no reports of injuries associated with the damaging winds.

Thunderstorms developed across portions of the greater Phoenix metropolitan area, mainly to the southeast of Phoenix, during the afternoon hours on September 8th. Some of the stronger storms produced gusty and damaging winds that approached 60 mph in strength. The strong winds downed multiple trees in the community of Gilbert, just to the southwest of Mesa-Gateway Airport. Small to moderate hailstones were also reported; at roughly 1700MST there was a report of hailstones about 0.88 inches in diameter near the intersection of Power and Germann Roads. There were no reports of injury due to the strong winds.

A powerful Pacific low pressure system moving slowly through the desert southwest interacted with deep moisture to produce widespread heavy rain across the central deserts during the morning hours on November 29th. Aided by frontal lift, isolated thunderstorms developed which further enhanced rain totals. The heavy rain resulted in several instances of flash flooding across the western portions of Maricopa County that occurred near or before sunrise. Most of the flash flooding took the form of flowing washes or roads becoming washed out or impassable. In some cases, data from Maricopa County Flood Control District gages was used to infer the presence of flash flooding. Fortunately, there were no reports of accidents or injuries due to the flash flooding.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across south central Arizona during the morning hours on November 29th. In addition to frontal lift, isolated thunderstorms were embedded within that rain bands helping increase rain totals. The heavy rain led to some flash flooding over higher terrain areas east of Phoenix, including near the Woodbury burn scar, during the mid morning hours. Heavy rain on the burn scar resulted in a rapid 4 foot rise in Fish Creek Canyon, as reported by data from Maricopa County Flood Control stream gage. There were no reports of accidents due to the flash flooding. A Flash Flood Warning was in effect at the time of the flooding.

A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across the central deserts during the morning hours on November 29th. In addition to frontal lift, isolated thunderstorms were embedded within areas of rain, helping to increase rain totals. The heavy rain led to episodes of flash flooding north of Phoenix, including areas south of New River and north of Deer Valley. In one instance, the Carefree Highway became flooded and a water rescue was required when a driver became stuck in the flooded road. Flash flooding also occurred on Desert Hills Drive at 15th Avenue. Fortunately there were no reports of accidents due to the flash flooding.

A strong cold front, associated with a powerful and slow moving Pacific low pressure system, moved steadily east across the deserts to the southeast of Phoenix during the morning hours on November 29th. As the front moved east it was accompanied by some thunderstorms which helped to increase the strength of the wind; the strong wind resulted in a few episodes of wind damage to the southeast of Phoenix. Wind damage was reported from Chandler southeast to Queen Creek as well as near Queen Valley in Pinal County. Most of the damage took the form of downed trees, although an asphalt roof near Queen Creek suffered significant damage to its shingles. Wind speeds were estimate to be well in excess of 50 mph in some of the cases. No injuries were reported due to the strong gusty winds.

A strong cold front associated with a powerful Pacific low pressure system pushed east and across the greater Phoenix metropolitan area during the early morning hours on November 29th. There were numerous reports of wind damage in the central portions of the greater Phoenix area associated with the front; various spotter reports as well as mesonet station measurements indicated that winds ranged from 50 mph to nearly 65 mph at times. Most of the wind damage took the form of downed trees, although there was also car port damage in some locations. There were no reports of injuries as a result of the wind damage.

A powerful Pacific low pressure system, accompanied by a strong cold front, pushed east across south central Arizona during the early morning hours on November 29th. Due to elevated levels of both wind shear and instability, the cold front spawned a pair of tornadoes which move northeast through communities to the southeast of central Phoenix, including Queen Creek and Higley. The tornadoes were short lived, with narrow path widths, and were both classified as an EF0. The tornadoes did not result in any injuries or fatalities but they did produce modest amounts of damage, including downed trees and power poles, as well as smaller trees blown over in 2 shopping center parking lots. The tornadoes occurred around 0500MST.

A powerful Pacific low pressure system, accompanied by a strong cold front, pushed east across south central Arizona during the early morning hours on November 29th. Due to elevated levels of both wind shear and instability, the cold front spawned a pair of tornadoes which moved northeast through communities to the north of central Phoenix, including Deer Valley, Glendale and North Scottsdale. The tornado that moved across Deer Valley was short lived, with a narrow path width, and was classified as an EF0. The second tornado that moved through North Scottsdale area had a path length over 8 miles, produced significant damage and was classified as an EF1. The tornadoes did not result in any injuries or fatalities. Most of the damage reported came in the form of downed trees as well as roof damage. The tornadoes occurred around 0400MST.

Scattered thunderstorms developed across the greater Phoenix area, including the community of Buckeye, during the evening hours on September 16th. Some of the stronger storms produced damaging outflow winds estimated to be in excess of 60 mph. At about 1936MST strong outflow winds downed a number of power poles 2 miles northeast of Buckeye. As a result power outages were reported by a local utility company. No injuries were reported due to the downed poles or power lines.

Isolated to scattered thunderstorms developed across the central deserts during the afternoon and evening hours on September 1 and some of them impacted the greater Phoenix metropolitan area. For the most part wind speeds stayed below 60 mph however winds were strong enough to cause damage. Utility companies reported power lines blown down by strong wind in Mesa and Scottsdale. Several reports were received regarding large trees as well as large branches downed by the outflow winds. At about 1700MST a dust storm was reported at Phoenix Mesa-Gateway airport as visibility was measured down to just one eighth of a mile. No injuries were reported due to strong winds or falling trees.

A powerful and slow moving winter storm moved across Arizona from February 21st into the 22nd; the storm brought locally heavy rain to much of south-central Arizona as well as heavy mountain snow. Although conditions were not overly unstable during the afternoon, they were sufficient to allow for the generation of isolated thunderstorms. On February 21st, a strong storm generated wind damage in Tolleson. On the 22nd, the storms produced a pair of funnel clouds. At 1435MST the public reported one of the funnel clouds in the town of Peoria, near the Padres field. Later that afternoon, at 1730MST, another funnel was captured on video about 4 miles to the northeast of Wittmann. The funnels were noteworthy and generated media attention due to their rarity, not because they caused any damage or other significant impacts.

A slow moving, and powerful winter storm continued to slowly move east across Arizona on February 22nd; scattered rain and high elevation snow showers persisted into the afternoon hours across south-central Arizona with moderate rain still falling at times to the east of Phoenix. Significant lower elevation rain had occurred overnight in association with the storm, and it resulted in episodes of urban and small stream flooding. Multiple Areal Flood Warnings were issued during the day on the 22nd primarily for areas to the south and east of central Phoenix. During the early afternoon hours, the Arizona Department of Transportation reported that State Route 88 was closed at Tortilla Flat due to water from a creek overflowing the road at an un-bridged crossing. No accidents or injuries were reported due to the flooding.

A powerful winter storm moved into Arizona on February 21st, and in addition to heavy rainfall and high elevation snowfall, it generated unstable conditions during the afternoon hours over the greater Phoenix metropolitan area. Elevated wind shear combined with partial sunshine and instability to kick off isolated thunderstorms. One of the stronger storms developed over western portions of the Phoenix area and impacted the town of Tolleson. At 1245MST gusty outflow winds 2 miles west of the town snapped multiple Palo Verde trees in half and uprooted one of the larger trees. The winds also bent over a street sign, and damaged a sign at a local Honda dealership. At the same time, strong winds blew down multiple Salt River Project power poles near the intersection of Interstate 10 and the loop 101 freeway. No injuries were reported, and a Severe Thunderstorm Warning was not in effect at the time of the damage.

Thunderstorms with very heavy rain developed over portions of the greater Phoenix metropolitan area during the late evening hours on August 10th; the storms and heavy rain persisted into the morning hours on August 11th. Peak rain rates with the stronger storms were in excess of one inch per hour and this led to an episode of early morning flash flooding in the Paradise Valley and Scottsdale communities. Heavy rain about 4 miles east of Paradise Valley resulted in flash flooding at the Talking Stick Resort; flooding occurred in the basement tunnels and lower levels resulting in power outages at the resort and the subsequent evacuation of guests. The flooding occurred at about 0200MST as reported by local law enforcement. A Flash Flood Warning had been in effect for the area earlier but it expired at 0130MST. The power remained out at the resort for about one week after the flooding.

Scattered thunderstorms developed across south-central Arizona, including the greater Phoenix metropolitan area, during the late afternoon and evening hours on August 8th. The thunderstorms produced typical monsoon weather hazards; many of the storms produced gusty and damaging outflow winds in excess of 60 mph. There were a number of weather stations that measured wind gusts 58 mph or greater and many reports were taken involving damage to trees, flagpoles, power lines and other structures. Many reports of heavy rain were taken indicating peak rain rates well in excess of one inch per hour. The heavy rain led to a few episodes of flash flooding, including washes that were flowing heavily and exceeding action stages or overflowing their banks. At 2100MST a video taken by the public showed a road closed by deep water flowing over the road at a low water crossing about 2 miles northeast of Fountain Hills.

A large cluster of very strong monsoon thunderstorms moved slowly north across the west and southwest portions of the greater Phoenix area during the afternoon and early evening hours on August 2nd. The atmosphere was very unstable and susceptible to excessively strong downburst winds and as the cluster moved north, microburst winds developed and damaged numerous homes in the Rainbow Valley community near Buckeye. At least one home was completely destroyed by the damaging winds. Further to the east, in the area around the Estrella Mountain Ranch community, very strong downburst winds toppled 3 large metal power poles maintained by SRP. As the poles went down, high tension lines fell as well and debris from the poles and lines damaged at least one home. The microburst winds that created the damage were estimated to have approached 80 mph, and possibly higher. No fatalities were reported fortunately.

Scattered monsoon thunderstorms developed across portions of the south central deserts during the afternoon and early evening hours and they impacted the greater Phoenix area. The stronger storms produced gusty and damaging outflow winds that blew over a number of trees in downtown Phoenix as well as Paradise Valley and other communities across north Phoenix including the town of Deer Valley. Trees and power poles were blown down near Phoenix Sky Harbor airport. Wind gusts with the stronger storms were estimated to be at least as high as 70 mph. No injuries were reported due to the gusty winds. Additionally, one of the storms generated a weak landspout tornado which was very short lived and produced no damage.

Isolated thunderstorms developed across portions of the greater Phoenix metropolitan area during the evening hours on August 30th, and one of the stronger storms moved across the community of Scottsdale. The thunderstorm produced strong gusty outflow winds estimated to be in excess of 50 mph; the winds blew down a number of trees in the area. In addition, the winds blew down power lines; the combination of downed trees and power lines led to a power outage and also forced road closures in Scottsdale. No injuries were reported due to the strong winds.

Thunderstorms developed across portions of south central Arizona, including the greater Phoenix metropolitan area, during the evening hours on August 10th. Due to high levels of moisture and instability in the atmosphere, some of the storms produced very heavy rainfall with peak rain rates in excess of 2 inches per hour. The heavy rain led to episodes of flooding across portions of the central deserts, including the community of Buckeye. The flooding led to the closure of various roads, including highway 238 just to the northwest of Ak-Chin Village. Isolated thunderstorms also generated gusty and damaging outflow wind in excess of 50 mph which caused damage to trees and power poles in the town of Buckeye. The flooding led to the issuance of Urban and Small Stream Flood Advisories but no Flash Flood Warnings.

Scattered thunderstorms developed during the afternoon hours across portions of south central Arizona and they affected areas including the greater Phoenix metropolitan area. Some of the storms produced damaging winds that were sufficient to down a number of power poles near Casa Grande. The stronger storms produced locally heavy rainfall; near the community of New River the heavy rains were sufficient to produce an episode of flash flooding. No injuries were reported as a result of the flash flooding.

Scattered to numerous showers and thunderstorms overspread much of south central Arizona during the afternoon and evening hours on August 2nd. Due to very moist and unstable conditions, the stronger thunderstorms that formed produced a variety of significant and severe weather, including damaging winds, large hail, very heavy rain, flooding and flash flooding. Public reports along with mesonet station readings indicated rainfall totals between three and four inches; the heavy rain led to road closures, flooding of underpasses and necessitated swift water rescues near the community of Cave Creek. Multiple Urban and Small Stream Advisories as well as Flood and Flash Flood Warnings were issued during the afternoon and evening hours. During the late afternoon, gusty thunderstorm outflow winds downed several power poles near Fountain Hills, and large hail was reported in central Phoenix.

One of the most active monsoon evenings of the 2016 monsoon season occurred during the evening of July 29th as strong thunderstorms developed over the central and eastern Arizona mountains and then rapidly descended upon the lower deserts. Strong thunderstorms, packing outflow winds in excess of 70 mph, raced southwestward across the greater Phoenix area towards southwestern Maricopa county; the stronger storms generated microbursts with damaging winds that destroyed or uprooted numerous trees and power poles and damaged a variety of other structures in the area. Fortunately there were no injuries reported due to the strong damaging winds.

An area of low pressure moving across Arizona combined with elevated amounts of moisture and instability to produce scattered to numerous showers and thunderstorms across south central Arizona during the afternoon and evening hours on October 18th. Much of the greater Phoenix metropolitan area was impacted by the thunderstorms, which produced gusty and damaging outflow winds in excess of 60 mph. The strong winds produced damage across the Phoenix area, knocking down trees, power poles and other structures. The storms also produced significant amounts of moderate to large hail, with hailstone diameters reaching as large as one and one half inches. Heavy rain also occurred, leading to some urban street flooding. No flash flooding was observed, however.

Isolated to scattered thunderstorms developed across portions of the greater Phoenix metropolitan area during the evening hours on September 13th. Due to elevated moisture and wind fields, the stronger storms were able to produce gusty and damaging winds as well as locally heavy rains. Although no Severe Thunderstorm Warnings were issued, a Significant Weather Advisory was issued at 1944MST for western portions of the greater Phoenix area including the town of Buckeye due to damaging wind potential from the storms. As it turned out, strong outflow winds downed power lines and led to 4000 Buckeye residents without power overnight and into the morning hours on September 14th.

The weather pattern across south central Arizona was favorable for scattered strong thunderstorms on August 31st; wind fields aloft were stronger than normal and there was ample moisture and instability present. Not surprisingly, scattered to numerous thunderstorms developed during the evening hours across the greater Phoenix metropolitan area and many of them produced gusty and damaging winds in excess of 60 mph. There were widespread reports of wind damage; numerous trees were downed as well as power poles and power lines. Damage was done to an assortment of structures such as billboards and roofs. Some of the storms generated heavy rain with peak rain rates well in excess of one inch per hour; the heavy rain led to episodes of urban flooding as well as flash flooding. Flash flooding flooded the deck park tunnel in downtown Phoenix, stranding numerous drivers. Fortunately there were no injuries reported due to the strong winds or flooding.

Scattered thunderstorms developed across portions of south central Arizona during the evening hours on August 30th, and due to a favorable combination of elevated moisture, instability and winds aloft, some of the stronger storms produced strong gusty and damaging microburst winds. Some of the most significant damage affected the central portion of the greater Phoenix area, but wind damage also occurred in Gila Bend. Gusty microburst winds in excess of 65 mph snapped trees and power poles, destroyed walls and horse stables and blew over a 300 pound barbeque grill. Locally heavy rainfall was also observed and this led to street flooding issues in the town of Laveen. Fortunately, no injuries were reported as a result of the strong winds.

The weather pattern across the desert southwest was conducive to another round of strong afternoon and evening thunderstorms across south central Arizona on August 29th. Elevated southwesterly wind fields aloft, ample moisture and instability combined to produce scattered thunderstorms, many of which affected the greater Phoenix metropolitan area. The stronger storms produced damaging microburst winds in excess of 60 mph which uprooted trees, downed power lines, and damaged roofs. The storms also produced locally heavy rain with rain rates in excess of 2 inches per hour; the rain led to urban flooding in portions of the greater Phoenix area.

Thunderstorms developed across portions of south central Arizona during the afternoon on August 27th, and many of them affected the greater Phoenix metropolitan area. Due to a combination of elevated moisture and instability and moderately strong winds aloft, the stronger storms were able to produce strong, damaging microburst winds, in addition to locally heavy rain and small hail. The storms produced a wide variety of damage and impacted a number of communities, including Peoria, Glendale, Surprise, central Phoenix and Tempe. Numerous trees and power poles were blown down, metal carports were ripped apart and significant damage occurred to a mobile home park near Phoenix Metro Center. Heavy rain, with rain rates approaching 2 inches per hour, led to urban flooding in Superior.

A second round of thunderstorms developed across the central deserts during the evening hours on August 11th, and some of them affected both the greater Phoenix metropolitan area as well as portions of northern Pinal county. Due to favorable atmospheric conditions, some of the stronger storms developed damaging microburst winds measured to be in excess of 60 mph at times. Among the areas hit the hardest was the southeast portion of the greater Phoenix area including the community of Chandler. The strong winds blew down a number of trees and power lines, and damaged a large number of airplanes stored at the Chandler Municipal Airport.

Scattered thunderstorms developed across south central Arizona during the afternoon hours on August 7th and they affected many locations including southern Gila county, the greater Phoenix area and northwest Pinal county. One community that was hit hard was the town of Coolidge. Some of the stronger storms produced strong and damaging microburst winds, measured at times to be in excess of 80 mph. The winds blew a roof off of one home and downed power lines as well as a variety of large trees. In addition, locally heavy rain fell with peak rain rates in excess of one inch per hour however no significant flooding was reported.

Isolated strong thunderstorms developed during the afternoon hours across portions of south central Arizona, and due to favorable atmospheric conditions, they developed gusty and damaging microburst winds in excess of 50 mph. The strong winds blew down a number of power poles in communities such as Apache Junction and North Mountain Park, and they also damaged a mobile home park. No injuries were reported due to the gusty winds. The storms resulted in the issuance of multiple products including Severe Thunderstorm Warnings and Significant Weather Advisories.

The atmosphere across southern Arizona was exceptionally moist and unstable on July 18th, due in large part to a significant infusion of tropical moisture from hurricane Dolores. As a result, scattered thunderstorms developed during the afternoon over south central Arizona and they persisted into the evening hours. Some of the storms became very strong and developed damaging winds, knocking down power poles near Morristown. During the evening, torrential rain developed in the community of Wickenburg, leading to significant flooding and flash flooding. Many rain gages reported over 3 inches of rain in a short period near Wickenburg. Fortunately no injuries were reported due to the flooding. A Flash Flood Watch was in effect for the area through 2300MST.

During the evening hours a cluster of slow moving thunderstorms developed over the northwestern portion of the greater Phoenix metropolitan area. The storms continued to redevelop over the same area and as a result were able to produce locally heavy rainfall, sufficient to produce urban and small stream flooding. The storms also produced a damaging microburst which affected the community of Wittmann. The winds, estimated to be at least 55 mph in strength, blew down a number of power poles and power lines and also damaged at least one home.

The southeasterly monsoonal flow continued across south central Arizona on June 27th, spreading increasing amounts of moisture into the lower deserts. As a result, isolated to scattered thunderstorms developed and affected the greater Phoenix metropolitan area during the late afternoon and evening hours. A few of the stronger thunderstorms generated strong, gusty and damaging microburst winds which blew down a number of trees and large tree branches and also toppled power poles. Fortunately no injuries were reported due to the strong winds.

A large and vigorous upper level low pressure system was situated over the desert southwest on September 27th; the associated cold front moved east across the central deserts during the afternoon hours. Lingering monsoonal moisture combined with high instability and strong wind fields to generate a squall line with damaging winds which spread east across the entire greater Phoenix metropolitan area during the middle of the afternoon. Damaging straight-line winds in excess of 60 mph downed numerous trees and power poles in the greater Phoenix area and also caused roof damage in places. No injuries were reported due to the squall line.

Scattered thunderstorms affected the greater Phoenix metropolitan area during the evening hours on August 25th, and some of the storms produced gusty and damaging outflow winds which reached to at least 50 mph. Some of the communities affected included west valley cities such as Buckeye, Avondale and Goodyear. The storms did not prompt the issuance of Severe Thunderstorm Warnings; Significant Weather Advisories were issued instead. The winds were strong enough to blow down power poles in Buckeye.

Thunderstorms developed during the late evening hours across the greater Phoenix metropolitan area on July 26th. The stronger storms generated gusty and damaging microburst winds in excess of 60 mph which uprooted trees and blew down power poles and power lines. Some of the most significant damage occurred over far northern portions of the greater Phoenix area, including Desert Ridge Marketplace, Deer Valley and Peoria. In addition to the strong gusty winds, locally heavy rain occurred which led to urban flooding and the issuance of Urban and Small Stream Flood Advisories. Finally, the strong winds briefly led to dust storm conditions over central portions of the Phoenix area, including Tumbleweed Park.

Scattered thunderstorms developed across the greater Phoenix metropolitan area during the evening hours on July 14th, and some of the storms generated strong gusty outflow winds estimated to be in excess of 60 mph. The gusty winds produced isolated instanced of damage, including trees blown over and power lines downed. The storms also led to the issuance of multiple Severe Thunderstorm Warnings for the area.

A powerful winter storm moved east across the central Arizona deserts on the 8th of March, and the associated cold front passed over the area during the afternoon hours bringing gusty winds in excess of 50 mph, locally heavy rain and small to moderate hail. The cold front generated scattered thunderstorms, which produced locally damaging winds in the greater Phoenix area, and locally heavy thunderstorm rains caused some flooding of streets and washes. Flooding of washes occurred in the community of Scottsdale, and one woman was found dead in one of the flooded washes.

Thunderstorms continued to develop across the south central Arizona deserts during the evening hours on August 21st, affecting both the greater Phoenix area as well as portions of northwest Pinal county including the community of Coolidge. Due to the very moist and unstable nature of the atmosphere, the thunderstorms primarily generated very heavy rainfall with rain rates well in excess of 2 inches per hour. The heavy rain was sufficient to cause some urban street flooding. Additionally, a few storms were able to produce gusty and damaging microburst winds which were strong enough to blow down power poles.

During the evening hours on September 24th, isolated showers and weak thunderstorms developed over portions of the central deserts, including the greater Phoenix area. Due to the very dry lower atmosphere, showers and virga in the area generated strong and gusty surface winds; the winds were sub-severe but they were still strong enough to cause damage to power lines in central Phoenix.

A series of strong thunderstorms produced damaging microburst winds over portions of south central Arizona, including the greater Phoenix area, on August 24th. Strong winds caused damage to buildings, trees, and power poles.

A series of thunderstorms rolled through the area and at least one strong downburst was reported to have caused damage to homes and took down power lines.

Strong winds, brief heavy rain and thunderstorms were associated with a deep low pressure system as it moved across Arizona late Monday. Strong winds resulted in widespread power outages across the metropolitan Phoenix area.

Thunderstorms formed over central and eastern Maricopa County late in the evening. Strong winds were likely the cause of a large power outage in the East Valley.

Very strong winds from thunderstorms took down trees, power lines and left thousands of customers without power. Very heavy rain resulted in flooded roads.

Severe thunderstorms caused power outages in south Gilbert.

Numerous power poles were blown down and homes were damaged in East Mesa when severe thunderstorms hit the area.

Thunderstorms developed over the far East Valley resulting in damage to homes, power lines and trees.

Scattered thunderstorms pushed through parts of the East Valley, knocking down power lines.

Power line downed by high winds in North Phoenix.

A slow-moving low pressure system off the coast of Baja California forced considerable moisture into Southwest and South-Central Arizona. Brief heavy rainfall, hail, and locally strong winds affected some desert areas.|Flight delays and cancellations were reported at Phoenix Sky Harbor airport, and about 3,000 SRP customers were left without power as thunderstorms moved across the Phoenix area.