Power Outage in Columbia, MD

A tree was blown down on US-40 Baltimore National Pike at Tyson Road. Power lines were down in the 4600 block of South Leisure Road.

Trees blew down onto power lines near the intersection of Beechwood Road and Bonnie Branch Road. A tree blew down on MD-144 Frederick Road near Oella Avenue.

An EF-1 tornado, with estimated maximum wind speeds around 100 mph, occurred Thursday May 30th 2019 near Glenelg, Maryland. At 3:20 PM EDT (2:20 PM EST), the tornado touched down in a residential community west of Glenelg between Meriweather Drive and Edgewoods Way. As the tornado was passing through the community, it ripped sections of roofing deck off homes. It also snapped and uprooted trees and |large branches, and lofted loose objects hundreds of feet. Moving east-southeast, it crossed over Tridelphia Road and other nearby roads, downing large trees and power lines. As it reached Maryland Route 32 it downed a swath of trees on both sides of the road before moving over and just north of a Howard County Highway Maintenance facility. At the facility, the tornado ripped off its tin roofing, damaged some roof framing, tore a large section of fabric from a salt dome, destroyed garage bay |doors, damaged fencing, and continued to snap and uproot large trees along its path. |Continuing along, it snapped and uprooted large trees in residential areas along Buckskin Lake Drive, Folly Quarter Lane, and Heritage Hill Lane. It also ripped off a section of barn roofing. The tornado lifted at 3:27 PM EDT (2:27 PM EST), over a farm property before it reached Sheppard Lane.

A tornado touched down in extreme northwestern Howard County, Maryland, approximately 1 mile south of Interstate 70/US-40/Baltimore National Pike at 8:19 PM EDT. Several wooden power poles were snapped along Penn Shop Road just east of MD-27/Ridge Road, indicative of winds over 100 MPH. The path continued northeastward into Carroll County.

The National Weather Service, Baltimore-Washington DC Weather|Forecast Office, conducted a survey of storm damage that occurred in|western Howard County Maryland from severe storms that struck that|county shortly after 1 pm EDT on Tuesday, June 21, 2016. Estimated maximum wind speed was 80 mph, making the tornado an EF-0.||Initial tornado touchdown was established near the intersection of|Old Annapolis Road and St. Michaels Road just southwest of Lisbon at|129 PM EDT. Properties there sustained tree damage with multiple|trees snapped, uprooted, and topped in multiple directions. A large|garage had its doors bowed by the wind. Small objects were lofted.||The tornado continued towards the southeast, passing through the|areas of Glenwood and Glenelg, before lifting just before Ellicott|City in the vicinity of Manor Lane and Carroll Mill Road. Along its|path, the tornado caused nearly continuous tree damage, with large|trees and tree branches snapped, uprooted, and topped in multiple|directions. The trees downed many power lines and blocked multiple|roads. Some trees and large branches fell on homes and garages.|There were a few instances of minor roofing damage from the wind,|but largely home damage was limited to tree falls. Several small|outbuildings were either damaged or destroyed.||Minor wind damage from strong thunderstorm winds continued southeast|into Ellicott City, but no tornado damage was found. Tree damage from thunderstorm downburst (straight-line) winds was noted as far west as Schafferville Rd, between Long Corner Rd and Florence Road.

The National Weather Service, Baltimore-Washington DC Weather|Forecast Office, conducted a survey of storm damage that occurred in|western Howard County Maryland from severe storms that struck that|county shortly after 1 pm EDT on Tuesday, June 21, 2016. Estimated maximum wind speed was 80 mph, making the tornado an EF-0.||Initial tornado touchdown was established near the intersection of|Old Annapolis Road and St. Michaels Road just southwest of Lisbon at|129 PM EDT. Properties there sustained tree damage with multiple|trees snapped, uprooted, and topped in multiple directions. A large|garage had its doors bowed by the wind. Small objects were lofted.||The tornado continued towards the southeast, passing through the|areas of Glenwood and Glenelg, before lifting just before Ellicott|City in the vicinity of Manor Lane and Carroll Mill Road. Along its|path, the tornado caused nearly continuous tree damage, with large|trees and tree branches snapped, uprooted, and topped in multiple|directions. The trees downed many power lines and blocked multiple|roads. Some trees and large branches fell on homes and garages.|There were a few instances of minor roofing damage from the wind,|but largely home damage was limited to tree falls. Several small|outbuildings were either damaged or destroyed.||Minor wind damage from strong thunderstorm winds continued southeast|into Ellicott City, but no tornado damage was found. Tree damage from thunderstorm downburst (straight-line) winds was noted as far west as Schafferville Rd, between Long Corner Rd and Florence Road.

Wind gusts of 61-63 mph were measured by spotters and a mesonet. There were scattered trees down and power outages county-wide. There were many roads blocked due to fallen trees.

A tree fell onto power lines on Belgaro Road.

A tree fell onto power lines on Graeloch Road.

Snowfall totaled up to 38.3 inches two miles west of Elkridge. Snowfall amounts between 23 and 34 inches were received across the rest of the county.||Power outages were reported throughout the county due to the weight of the snow on trees and power lines.

A local newspaper reported that a home on Daisy Road in Woodbine was left uninhabitable when a large oak tree fell into the home. There were also numerous trees and power lines down along the road.

Montgomery County Emergency Management reported downed trees and power lines across the county.

Numerous trees and powerlines down.

Numerous trees and power lines were downed.

Trees and power lines were downed.

Trees and power lines were downed.

High pressure over New England pumped in an abundant amount of cold air while low pressure developed along the Mid-Atlantic Coast. Precipitation well ahead of the low overspread Maryland on the evening of the 28th. Precipitation continued through most of the 29th before ending during the late afternoon and evening hours. Precipitation started off as rain across most areas, but colder air wrapped into the storm system causing rain to change over to snow. ||The combination of heavy wet snow on trees that still had leaves caused numerous power outages across northern and western Maryland.

Hurricane Irene tracked up the Mid-Atlantic Coast during the evening hours of the 27th through the early morning hours of the 28th. Irene passed by just to the east of Ocean City, Maryland during the early morning hours of the 28th. The minimum central pressure was 958 millibars and maximum sustained winds were 80 mph, making Irene a category one hurricane. Irene produced tropical storm conditions across portions Maryland near and east of the Interstate 95 Corridor. The worst conditions were near the Chesapeake Bay. ||The highest rainfall totals were around twelve inches across St Marys County. Widespread power outages were reported across eastern Maryland along with numerous trees down. Total damage from Irene was over 10 million dollars.

A potent area of low pressure was located over the Tennessee Valley on the morning of Wednesday, January 26th. The warm front associated with the low triggered a period of mixed precipitation early Wednesday morning. There was enough warm air behind the warm front for precipitation to fall in the form of light rain and drizzle later in the morning into the afternoon.||The low passed through the area late in the afternoon into the evening. A burst of heavier precipitation was associated with the low and at the same time colder air was drawn into the system. This caused a period of heavy snow to bring significant snow accumulation to the area in a short period of time. The heavy snow which fell around the evening rush hour caused numerous traffic accidents and there were also numerous power outages due to the heavy snow weighing on trees and power lines. Stranded vehicles were also reported around the Baltimore metropolitan area due to the snow.

Tropical Storm Hanna tracked up the Mid-Atlantic coast on the 6th with maximum sustained winds around 50 mph. Hanna originally made landfall near the border of North and South Carolina around 3:20 AM on the 6th. Hanna tracked across eastern North Carolina during the early afternoon hours before turning northeast across southeastern Virginia later in the afternoon. Hanna eventually tracked across the Chesapeake Bay and into Delaware during the evening hours. With the track of Hanna being to the east, the strongest winds were also confined to our east. However, Hanna was still responsible for heavy rain along with Tropical Storm force winds across Maryland. Rainfall amounts totaled around 4 to 8 inches across many locations. Numerous roads were closed throughout Maryland due to flash flooding. Tropical Storm force winds were responsible for downed trees and power lines across Maryland as well. The worst conditions occurred during the late morning and afternoon hours as the storm passed by just to the east.

A cold front approached the region on July 27th as a strong upper level low pressure system remained over the northeast. Warm and humid air at the surface interacted with cooler air aloft to produce scattered to numerous showers and thunderstorms during the afternoon hours. Many of the storms became severe, producing damaging winds that downed trees and power lines. Large hail to the size of quarters was also reported.

Heat and humidity strengthened across the Mid Atlantic ahead of a cold front during the afternoon and evening of June 28th. This led to scattered thunderstorms which produced damaging winds in some locations across north central Maryland. These winds brought down trees and power lines.

A very warm and humid air mass was entrenched across the Mid Atlantic during the late afternoon and evening hours of June 7th. As an upper level disturbance moved across the area, scattered strong to severe thunderstorms developed. Damaging winds brought down some trees and power lines across Maryland. The largest diameter hail recorded was quarter-sized, and occurred in Hillandale in Prince Georges County.

A potent storm system crossed the region May 12th. Warm and moist air filtered in ahead of the system, bringing widespread showers and thunderstorms with heavy rain. Heavy rain began to overspread the region during the evening of the 11th and continued through the morning of the 12th. The pressure gradient with the low pressure system produced strong gusty winds across lower southern Maryland during the late evening. With the ground already saturated dozens of trees and power lines fell across the region. ||The tight pressure gradient and strong southeasterly flow, despite the quarter moon phase, allowed tidal departures of 2 feet or more along the Maryland Chesapeake Bay in lower southern Maryland. Several roads were closed and homes flooded due to the high tides.

Gusty winds developed in the wake of a strong cold front that crossed the region February 10th. Wind gusts in excess of 60 mph were measured in some locations, with several hours of wind gusts in excess of 40 mph. This downed trees and power lines across the region. Property damage was also reported due to the winds.

A low pressure system developed over the high plains of eastern Colorado on February 23rd and pushed east to the Ohio Valley by February 25th. Abundant warm and moist air just above the surface originating from the Gulf of Mexico was pulled north over the Mid Atlantic ahead of the system. Snow began to fall over the region beginning late on February 24th and continued through the early evening hours on February 25th.|Snowfall amounts ranged from 3 to 6 inches across Maryland. Nearly 2000 people lost power in Montgomery County with the snowfall. Numerous traffic accidents were reported across the Baltimore metro area due to the icy road conditions. Schools were delayed Monday, February 26th, in Montgomery and Prince Georges Counties.

A low pressure system moved out of the Southern Plains and strengthened off the southeast coast February 12th through 14th, bringing accumulating wintry precipitation to much of Maryland beginning during the afternoon and evening hours of February 12th and continued through the early morning hours of February 14th. The heaviest precipitation occurred February 13th as the low pressure system intensified off the coast. |Snow and sleet accumulations ranged from 1 to 9 inches and ice accumulations ranged from a tenth to three quarters of an inch. This mix of sleet, snow and freezing rain created a very hard and thick layer of ice. Many snow plows were not equipped to handle such heavy precipitation, leading to longer wait times for roadways and sidewalks to be cleared. Across lower southern Maryland, freezing rain was more of a problem. Ice coated trees and power lines, causing over 100,000 power outages. Several roadways were closed due to downed trees. Those open roadways were snarled with traffic and dozens of minor car accidents. Schools were closed for much of the week. Restaurants and florists reported reduced Valentines��� Day sales due to the hazardous road conditions.

Very strong westerly winds occurred on the 28th due to the passage of a large low pressure system. Winds gusted as high as 45 to 50 mph across most of Maryland. Scattered reports of downed trees and powerlines lead to many power outages across much of the state. The most extensive power outages occurred in the Baltimore area including Carroll, Baltimore, and Anne Arundel Counties. Wet grounds from the recent rains also contributed to the downed trees and branches. 4800 customers were without power during the height of this storm in Montgomery County, MD.

A historic snowstorm occurred between February 11-12 across the Mid-Atlantic. Storm total snowfall across much of Maryland ranged generally between 8-14 inches. A period of thundersnow occurred overnight and early in the morning of the 12th across portions of the northern Washington DC suburbs and the Baltimore suburbs of Maryland, where localized snowfall ranged between 14 to 22 inches. The highest snowfall total occurred at Columbia Hills, MD, in Howard County, where snowfall was 22.5 inches. There were also numerous reports of downed trees and powerlines, which caused significant power outages. Local utility companies reported total power outages of around 300,000 customers in the Washington/Baltimore region. Particularly hard hit were sections of Anne Arundel County, which had over 100 roads closed due to the combination of heavy snow and downed trees and powerlines. Amtrak reported major delays and cancellations all along the northeast rail corridor, which passes through both Baltimore and Washington, DC. There were also major delays at all 3 major hub airports in the region, Washington Dulles International, Washington Ronald Reagan National, and Baltimore/Washington Thurgood Marshall International.

Very strong winds developed on the 14th due to a strengthening low pressure system off the Mid Atlantic Coast and a fast moving cold front that passed through the region early in the day. Widespread damages and power outages occurred during this event, with newspaper reports indicating tens of thousands without power for an extended period of time.

The remnants of Tropical Storm Tammy caused widespread heavy rainfall between 3 to 7 inches across the region. Numerous reports of flooded roads were received due to the prolonged rains. Localized areas received close to 12 inches of storm total rainfall, such as the automated gauge at Montebello in Nelson County Virginia, which measured 11.36 inches. Washington National Airport measured 7.34 inches of rain from this event. Sterling NWS measured 7.14 inches. Baltimore/Washington Airport measures 6.72 inches. Dulles Airport measured 6.62 inches. Charlottesville Airport measured 5.50 inches. Martinsburg Airport measured 2.91 inches. Water rises and subsequent areal flooding occurred in many parts of the area. Water flooded many basements of houses near the flood plain of the Northeast Branch of the Anacostia River. The mayor of Anacostia reported the flooding could have stemmed from the failure of a county-operated pumping station. Roads were closed due to flooding on Jones Falls. Several roads were flooded and closed across Anne Arundel County due to high water. A water rescue was performed in Ellicott City. 10 roads were flooded and closed across the Damascus area. One water rescue occurred in the Damascus area. A trained weather spotter reported the northwest portion of Branch Park flooded near Colesville. 30 people had to be evacuated from their homes and taken out of flooded cars. As much as 6 feet of water swamped roads in the Darlington area, reported by newspaper. Flooded and closed roads were reported in the Perry Hall area of suburban Baltimore. Some power outages were also noted due to the heavy rainfall.

A strong cold front crossed the Mid Atlantic Saturday, April 2nd. This front brought severe thunderstorms that downed trees and power lines as well as heavy downpours that flooded rivers, streams, and roadways. After the front passed, strong winds downed trees and power lines mainly in the higher terrain of western Maryland.

Strong thunderstorms downed trees and power lines in east Maryland. Around 20,000 people were without power. The three regional international airports, Reagan National, Dulles International, and Baltimore-Washington, reported 1 to 3 hour weather delays for flights departing to the northeast.

A stalled frontal boundary and a passing upper level disturbance produced scattered showers and thunderstorms across Northeast Maryland and the Washington Metro area. The thunderstorms were accompanied by strong winds that downed trees and power lines.

An area of low pressure moved through on the 5th and 6th and brought freezing rain and sleet to north central and northeast Maryland.One to two tenths ice accumulated and formed a glaze on roadways and downed power lines. This led to school closures, some automobile accidents, and scattered power outages.

An area of low pressure moved across the region on the 26th and 27th. This system produced a second round of freezing rain and snow. One to two additional inches of snow fell across the Baltimore Metropolitan area as well as one tenth inch of ice. Ice covered sidewalks and roadsides were blamed for the death of a pedestrian near Baltimore City. The man was struck and killed by a vehicle as he walked in the street because the sidewalks were slick and dangerous. Scattered power outages and other minor injuries were also blamed on the ice. Federal agencies in the Washington DC Metropolitan area closed three hours early on the 27th due to the inclement weather. Schools were closed again on the 27th.

The first in a pair of low pressure systems moved across the region late on the 4th through midday on the 5th. This system produced 5 to 9 inches of snow across North and Central Maryland. As a result the roads were treacherous in many places. Several automobile accidents were reported. One death was recorded due to injuries from car a accident. Several non-life threatening injuries were also reported across Maryland. Power outages were also reported in Allegany County.

A line of strong to severe thunderstorms moved across the region on the 19th. These storms preceded a cold front and produced gusty, damaging winds and heavy rainfall. Rainfall amounts averaged 2 to 4 inches. Widespread power outages were reported due to downed trees and power lines. The heavy rainfall led to flash flooding across the Potomac Highlands and Northeast and Central Maryland. Four deaths were attributed to flooding in Baltimore City. A student drowned after falling into Herring Run Creek and three workers were washed away while working in a storm drain. Emergency and rescue officials also had to perform swift water rescues for vehicles trapped in high water in Poolesville. Several cars were flooded in the Germantown area.

A strong cold front moved through the region early on the 13th, leaving frigid temperatures and strong winds. Widespread damage due to downed trees and power lines resulted. In Prince Georges County, one fatality was reported in Hyattsville when a wall at a construction site collapsed and pinned a worker underneath it. A second wall collapsed in Bowie at a department store. The strong winds also overturned an empty trailer truck in Anne Arundel County. The driver had minor injuries. Another truck was also overturned in Frederick County on US Highway 15. A large recreational/housing tent (26,000 sq ft) was destroyed at Fort Meade. The tent was valued at 150,00 dollars. Later a crane was blown off the Woodrow Wilson Bridge and onto a barge in the Potomac River. No injuries were reported from the crane incident and the damage was superficial. At the height of the storm about 150,000 homes and business in Maryland were without power.

On Oct 14th a cold front moved through the region. Scattered showers and thunderstorms produced heavy rainfall overnight. Some amounts were in excess of 1 inch. Gusty winds developed behind the front on Oct 15th. These winds coupled with the saturated soils caused widespread power outages due to downed trees and power lines. In Maryland up to 35,000 residents were without power.

On September 18, 2003, Hurricane Isabel made landfall on the North Carolina Coast. Its wind field extended for hundreds of miles from the storm's center. As bad as it was across Maryland and Virginia, it could have been much worse. The air at the surface was relatively cool. Temperatures had been in the 60s during the day and the strongest winds came at night. Most areas saw wind gusts of 50 to 60 mph. However, wind sensors on building tops in and around DC recorded winds averaging 70 to 80 mph for an extended period of time at just a couple hundred feet off the surface. Surface winds were about half of that. The high winds gusts to 70 mph came with bands of showers that would mix down to the surface causing streaks of damage that sometimes appeared as though a tornado had moved through instead of a strong narrow ribbon of wind. Wind damage to structures was very limited. Wind damage to trees in the area was extensive and widespread. Soil moisture was high from previous rains making it easier for trees to uproot. Also, the trees were still in full canopy which acted like a sail to catch the wind. Trees fell on electrical and utility wires taking out power and phone. Trees fell on roads, cars, and homes. Allegany County was on the fringe of the storm. Higher terrain saw the most wind. Only 2,259 customers lost power during the storm and one house was damage when a tree fell on it. Carroll County had seven homes that had damage with one house losing part of its roof. In Frederick County, a State trooper was injured when a tree fell on his car in the storm and another was injured when a tree fell on him. Two homes had some damage and there were 40 road closures from trees falling on them. 28,892 customers lost power in the County. In Howard County, over 50% of the county lost power with 65,105 customers out. Five homes had major damage and another 8 had minor damages. In Montgomery County, the power was out to over 600 traffic signals. Come Saturday morning, 330 lights were still out with dense fog across the region combining to contribute to some serious accidents. Almost 240,000 customers lost power in the storm in Montgomery. The County reported 94 buildings destroyed, 23 with major damage and 32 with minor damage. In Washington County, 21,743 people lost power and 30 roads were closed due to downed trees. Hagerstown Airport reported wind gusts over 40 mph from 10 pm through 2 am with a peak gust of 52 mph at 1 am. After the storm, many injuries occurred from carbon monoxide poisoning from people improperly running generators in their houses. Other injuries were related to chain saws and the clean-up of debris. Two to four inches of rain fell across central and western Maryland. This was not enough to cause flash flooding but when added to previous rains, it was enough to bring the Potomac River out of its banks. Route 135 was closed due to river flooding in Luke. Pekin Bridge which was under construction experienced a washout. Officially, the river crested in Luke 1.7 feet below flood stage. Cumberland and Hancock crested just 4 feet below flood stage and Williamsport, 2 feet below flood stage. But flooding did occur along some stretches of the river. Minor Flooding occurred at Paw Paw where the river crested at 27.91 feet (Flood State is 25 feet) and moderate flooding occurred from Shepherdstown, WV down pass Point of Rocks, MD. At Point of Rocks, the river crested at 23.12 feet at 1:30 am on September 21. Flood stage is 16 feet. Frederick County reported three homes with moderate to major damage from flooding and two homes with minor to moderate damage. The flood waters also closed down a section of the C&O canal. The Monocacy River remained well below flood stage in Frederick. Seneca Creek saw minor flooding a Dawsonville from 9 am until 4 pm on the 19th reaching a crest less than a foot above bankful. As Seneca Creek was going down, the Potomac River was rising in Montgomery County as the flood crest moved down from Point of Rocks disrupting Ferry operations at Whites Ferry. Little Falls rose above flood stage at 7 pm on the September 21, crested at 11.33 feet (1.33 feet above flood stage) and fell back below flood stage at 9 pm that night.

Low pressure over North Carolina moved northeast along the Atlantic Seaboard on the 31st. This system brought a period of light to moderate snow to western and central Maryland. Snowfall accumulations with this late season storm were elevation dependent because ground temperatures were above freezing below 1500 feet. This prevented most of the snowfall from accumulating in valleys and in lower elevations east of Hagerstown. Lower elevations reported accumulations between 1 and 3 inches. Above 1500 feet where the snow was able to accumulate, snow depth reached 4 to 8 inches. Minor power outages were reported in isolated locations where the snow weighed down on trees and power lines.

A strong cold front moved through the region around dawn on the 23rd. This front ushered in winds that gusted between 40 and 55 MPH. Due to the soft saturated soil from heavy rains and snow melt, the gusty winds downed scattered trees and power lines. In Washington County, a wind gust of 43 MPH was reported at the Hagerstown airport. Wind gusts in Frederick County included 49 MPH at the Frederick airport and 48 MPH in Mt. Airy. In Baltimore County, a 48 MPH gust was recorded in Catonsville. In Howard County, a 49 MPH gust was measured in Columbia. In Montgomery County, 5200 customers lost power after winds gusted to 50 MPH in Damascus and 47 MPH in Rockville. In Prince Georges County, a wind gust of 49 MPH was recorded at Andrews Air Force Base. A total of 1400 county customers reported power outages. In Anne Arundel County, 2300 customers lost power as winds gusted to 49 MPH at Baltimore-Washington International Airport. In St. Mary's County, a wind gust of 43 MPH was recorded at Patuxent River Naval Air Station.

Low pressure passed directly over the region between the evening of the 24th and midday on the 25th. This system brought mainly snow to Western and North Central Maryland. A mixed bag of precipitation including snow, sleet, and freezing drizzle was reported in the Washington D.C. and Baltimore suburbs. The largest snowfall totals occurred near the Pennsylvania border where between 6 and 8 inches was reported. Two to 4 inches of snow fell in Southern Frederick, Southern Carroll, Central Baltimore, Harford, Howard, and Northern Montgomery Counties. Patchy ice on roads from a period of freezing drizzle was blamed for dozens of traffic accidents in Montgomery County. In Northern Prince George's and Northern Anne Arundel counties, in addition to Baltimore City, 1 to 2 inches of snow was recorded. The amount of snow that fell from this storm was enough to give the region an official "White Christmas". According to historical records for Baltimore, measurable snowfall has only occurred 6% of the time on December 25th. In addition, Baltimore only has a 13% chance of having snow on the ground on the 25th. Winds increased to 20 to 30 mph with gusts to 45 MPH after the low passed by on the afternoon of the 25th. Isolated power outages and downed trees were reported.

An area of low pressure that tracked across the region on the 11th produced between 1 and 2 inches of rainfall. Unfortunately while rain was falling during the morning hours, ground temperatures were below freezing across Western and North Central Maryland. This caused the rain to freeze on contact with the ground and several locations reported ice accumulations between 1/4 to ½ inch. Roads and sidewalks became treacherous and numerous trees and power lines were downed by the heavy ice accumulations. Across Central and Western Maryland, 38,000 customers lost power as a direct result of the storm. In Frederick County, two men died from carbon monoxide poisoning in their Libertytown home. A gas-powered electric generator that was turned on in response to a 3 day power outage was blamed for the deaths. In Howard County, 22 people were treated in emergency rooms for slip and fall injures related to the ice. In Anne Arundel County, 8 slip and fall injuries were reported. In Prince George's and Anne Arundel counties, ice accumulations were held to less than one quarter of an inch because temperatures rose above freezing by mid-morning. A few icy patches were reported on roads and sidewalks during the morning hours. In Baltimore and Harford counties, a combination of heavy rainfall and melting snow caused minor flooding on roads during the afternoon and evening of the 11th.

High pressure off the Atlantic Coast pumped hot and humid air into the Mid-Atlantic region. This caused high temperatures to reach between 92 and 100 degrees August 1st through the 5th. Dew points in the upper 60s to mid 70s forced heat indexes to soar to between 98 and 110 degrees. Seven residents of Baltimore County and Prince George's County succumbed to the excessive heat. In Baltimore City, a 56 year old man and a 74 year old man were found dead in their home on the 5th. On the 6th, an 88 year old man was found dead in his home. On the 7th, a 36 year old man being held in jail was found dead in his cell from heat related causes. In Baltimore County, a 30 year old woman was found dead in her home. In Prince George's County, a 51 year old woman died in her home on the 5th. On the 7th, a 46 year old man died from a combination of drug use and the heat. In Frederick County, eleven people in participating in an outdoor activity in Ijamsville were treated for heat illnesses. The heat was also blamed for buckling pavement on Interstate 70 near the Route 355 exit. Several regional power companies noted record energy consumption during this heat wave, the hottest in 5 years.

A large area of high pressure sat off the Mid-Atlantic coast during the last week of July. This caused a warm and moist south wind to blow into the region for several days, resulting in another heat wave. The hottest days were the 28th and 29th of July when temperatures rose into the 90s and heat index values reached 100 to 110 degrees. Power companies reported record electricity use on the 29th. Excessive heat was believed to have played a part in buckling train tracks that caused a passenger train derailment in the Montgomery County community of Kensington on the afternoon of the 29th. The derailment injured 97 people, including 6 who were critically injured. At least three people died from heat stroke in Central Maryland during the heat wave. In Prince George's County, a 31 year-old man was found dead in his residence on the 30th. In Baltimore City, a 73 year-old man was found dead in his home on the 30th and an 81 year-old woman was found dead in her home on the 31st. Underlying health conditions contributed to these deaths. A 71 year-old man was also believed to have succumbed to the heat in his Baltimore home where a temperature of 96.5 degrees was measured on the 28th. Several other jurisdictions reported an increase of emergency room visits due to the heat. In Harford County, 12 elderly citizens were treated for heat illness. In Anne Arundel County, 7 people ranging from children to senior citizens were treated for exposure to the heat. In Baltimore County, at least 3 people were treated for heat cramps or heat exhaustion.

Another round of hot and humid weather occurred across Central and Southern Maryland on July 22nd and 23rd. Heat indexes rose to between 98 and 105 degrees both days. Three people died from heat related illnesses during this time. In Montgomery County, a 47 year old man died on the 25th. In Baltimore County, a 50 year old man died on the 22nd. In the city of Baltimore, a 60 year old man was found dead in a junkyard on the 20th. Each victim had underlying health conditions which contributed to their death. Allegany Power, serving Central and Western Maryland, recorded record energy usage on the 22nd.

Scattered thunderstorms moved through North Central and Southern Maryland in addition to the Washington D.C. and Baltimore metropolitan areas during the afternoon of the 6th. In Frederick County, an F0 tornado touched down at 5:05 PM EDT just north of Hayward Road near Frederick (1/4 mile west of Route 15). The tornado caused intermittent minor damage to structures and downed several trees as it pushed east before lifting near the Monocacy River. It had a path length of 2 miles and a width of 50 yards. The twister toppled an unanchored construction trailer in Governors Choice Industrial Park. A home in the Dearbought Park subdivision lost a chimney. At least 20 trees were downed in the Broadview Acres area, including one which landed on a car. In Montgomery County, a funnel cloud was spotted near the intersection of Shady Grove Road and Mill Run Drive. Minor tree damage was reported in the vicinity. Pea to marble sized hail was reported in Burtonsville, Glenmont, Silver Spring, and Forest Glen. A wind gust of 51 MPH was recorded in Shady Grove and a gust of 54 MPH was recorded in Gaithersburg. In Carroll County, a wind gust of 46 MPH was measured in Millers. A gust of 50 MPH was estimated in Westminster. In Baltimore County, 2.15 inches of rain fell at Cylburn Arboretum in Baltimore. A wind gust of 56 MPH was recorded around 1 PM in Parkton. In Anne Arundel County, the strongest part of the thunderstorm tracked between Fort Meade and Riviera Beach. Dime sized hail fell at BWI Airport. Quarter sized hail was reported in Chesterfield. Pea to golfball sized hail was reported in Pasadena where a total of 2.56 inches of rain fell. Trees and power lines were downed in Pasadena, Glen Burnie, and Arnold. Four homes were damaged by downed trees and nine homes were struck by lightning across the northern portion of the county. A 330-year-old tree in Lothian was also heavily damaged. At the height of the storm, 13,200 customers were without power. In Howard County, dime to quarter sized hail was reported in the Laurel and Savage areas. A few trees were also downed countywide. In Prince Georges County, golf ball sized hail fell in Brandywine. Quarter sized hail was reported in Laurel and pea sized hail fell in Accokeek. For a second straight day, trees fell onto homes in the county. About a dozen families in Cottage City were displaced after 11 homes were condemned due to structure damage. A home in Clinton burned to the ground after a fallen tree started the house on fire. Minor damage was also reported in Bladensburg. Heavy rains caused ponding of water on roads in the southern portion of the county. In Charles County, marble sized hail fell in Bryans Road. Trees and power lines were downed countywide. Several homes were also struck by lightning. In Calvert County, wind damage was reported from fallen trees. A large branch was downed in Derwood. Pea sized hail fell in Dunkirk and hail of unknown size fell at Solomon's Island. In St. Mary's County, trees were downed and a fence was ripped from the ground in the Indian River Estates neighborhood of Mechanicsville.

Thunderstorms with large hail, heavy downpours, and gusty winds developed across central Maryland during the early afternoon. In Montgomery County, dime to golf ball sized hail damaged vegetation and dented roofs and cars in Darnestown, Gaithersburg, Rockville, Derwood, Olney, and Brookeville. In Gaithersburg, high winds downed trees and power lines. One tree fell onto a day care center on Oakmont Street. Another tree fell onto a house on Hutton Street. Trees and power poles were downed onto Route 28 near Muddy Branch Road. About 2500 customers lost power as a direct result of the storm. In Howard County, a wind gust of 62 MPH was recorded in Laurel and a gust of 46 MPH was reported in Ellicott City. Hail up to golf ball size fell in Columbia and Ellicott City. In Baltimore County, quarter sized hail was reported in the northern and western sections of Baltimore.

A strong arctic cold front pushed through the region during the evening of the 21st. This front ushered in strong northwest winds that gusted as high as 59 MPH. The highest winds occurred between 6 PM and 11 PM, but gusty conditions continued through 4 AM on the 22nd. Minor structural damage was reported in isolated locations, in addition to downed trees and power lines. Over 5000 power outages were reported across the Washington and Baltimore suburbs. A wind warning was posted for the Chesapeake Bay Bridge near Annapolis. Measured wind gusts included 59 MPH at Parkton (Baltimore County), 56 MPH at Smithsburg (Washington County), 51 MPH at the University of Maryland - Baltimore Campus, 50 MPH at Tall Timbers (St. Mary's County), 47 MPH at Hagerstown, 46 MPH in Laurel (Howard County) and in downtown Baltimore, 45 MPH at Patuxent River Naval Air Station (St. Mary's County), and 41 MPH at BWI Airport.

A strong cold front pushed through the region during the afternoon of the 1st. For several hours after the front passed, northwest winds gusted between 35 and 50 MPH. The winds downed trees and wires in some communities, resulting in isolated power outages. Wind gusts across Maryland west of the Chesapeake Bay included 58 MPH in St. Mary's County, 55 MPH in Smithsburg, 54 MPH in Frederick, 51 MPH in Baltimore, 49 MPH at Baltimore-Washington International Airport, 46 MPH at Martin State Airport and Hagerstown, and 44 MPH at Andrews Air Force Base.

Severe thunderstorms moved through Central Maryland during the early evening of the 24th. One thunderstorm produced a devastating F3 tornado which was on the ground for 17.5 miles from College Park in Prince George's County to just east of Columbia in Howard County. Multiple vortices were reported with the tornado at times. The tornado first touched down in Northwest Branch Stream Valley Park just west of Hyattsville. It rapidly strengthened to an F3 tornado with winds up to 200 MPH. The damage path ranged in width from 100 to 200 yards. The tornado crossed the intersection of Adelphi Road and University Boulevard into the western campus of the University of Maryland. Ten trailers being used as a temporary office for the Maryland Fire and Rescue Institute were completely destroyed by the twister. Debris from the trailers such as video tapes and pieces of paper were found up to 60 miles away in Northern Baltimore and Harford Counties in addition to extreme southeast Pennsylvania. Four of the six people inside the trailers were injured, one seriously. One staff member was thrown free of the destruction and was found in a dumpster nearby. Another person dug their hands into the carpet and held on as their feet were being pulled up in the air by the tornado. The other four occupants, including one child, took shelter under desks and survived. Two University of Maryland students who were visiting their father who worked in the trailers left by car shortly before the tornado hit. The two sisters, ages 20 and 23, were killed when the tornado picked up their car outside of Denton Hall and threw it either around or over an eight-story dorm. They died instantly when their car crashed into a wooded area 300 yards from the road. Most of the other buildings on the campus in the path of the storm were made of brick and suffered only minor to moderate damage, such as Denton Hall Dormitory, Easton Hall Dormitory and Dining Hall, and the President's Mansion. A parking lot outside of Denton Hall full of cars was also hit by the tornado. At least 200 vehicles in the parking lot were damaged, including at least 100 that were blown into and onto other vehicles. At least twenty cars were totaled and one car was partially ripped apart. The woods behind the parking lot were nearly flattened. The bubble roof of the football practice facility near Byrd Stadium was removed. Forty-eight people on campus, including 25 students, were injured by flying debris as the twister downed trees and ripped pieces of siding and roofing off buildings. In addition, residential areas near the campus, including the University Courtyard Apartments sustained damage. A total of 3000 students were left temporarily homeless after two dorms and an off-campus housing unit were evacuated due to storm damage. During the recovery effort, a 78-year-old firefighter who responded to the tragedy at the University died of a heart attack shortly after returning from the scene. The tornado moved north-northeast off the campus and crossed University Boulevard at the intersection of Metzerott Road. The steeple of a church was removed and cars were flipped near the intersection. Power lines and trees were also downed. The twister continued through Paint Branch Stream Valley Park where it downed numerous trees. The tornado weakened to F2 strength before it crossed Interstate 95/495 just west of the Route 1 interchange. It was remarkable that even though the highway was filled with bumper to bumper rush hour traffic, the only damage reported was a flipped tractor trailer. The next area hit by the tornado was the community of Cherry Hill. Several trees and power lines were downed onto roads and houses just west of Baltimore Avenue, including the Chestnut Hills subdivision. Several businesses along Route 1 sustained minor damage, and three additional buildings lost portions of their roofs. Three employees of a business in the Chestnut Hills Shopping Center were injured by flying glass after the windows on the front of the store were shattered. The tornado moved across the National Agricultural Research Center and caused over $40 million dollars in damage. Thirty greenhouses were damaged and several long term studies inside were destroyed. Fifteen other buildings west of Route 1 suffered minor to moderate damage. Numerous trees, including a row of historic willow oaks, were downed. Over 65 vehicles in the employee parking lot were damaged by flying debris. Eleven of these vehicles were totaled. Just north of the research center, "stunning" tree and power line damage was reported at the intersection of Sellman and Montgomery Roads. The tornado tracked across Powder Mill Road and ripped the roof off an office building at the intersection of Cedar Lane. It continued across the Beltsville Heights development and caused damage to the roof at Martin Luther King Elementary School. The tornado continued moving north-northeast toward Laurel. The continuation of the damage path was located at the Virginia Manor Industrial Park on Van Dusen Road where several trees were downed. The tornado was spotted as it moved past Laurel Hospital and it caused minor damage in the Village at Wellington subdivision nearby. The next concentrated area of damage was found at Laurel High School. An annex with 6 classrooms was heavily damaged. The roof was ripped off three of the classrooms and three people inside the structure were injured by flying debris. Significant damage was also reported to the athletic fields behind the school. The tornado moved northeast across the Fairlawn development where it damaged several homes. One home on 10th Street was destroyed after the twister removed the roof and an outside wall. On Montrose Avenue, a woman and her dog were briefly picked up by the tornado. The woman sustained injuries to her hip and leg after being tossed 3 feet in the air and the dog landed uninjured. The historic Harrison Building at the corner of 9th and Montgomery Streets lost its roof and a church and school nearby were damaged. The tornado remained on the ground as it crossed the Patuxent River into Howard County. Across Prince George's County, the tornado was responsible for $100 million in damage. A total of 861 homes, 561 vehicles, and 23 businesses were damaged countywide. In North Laurel, the twister heavily damaged a townhouse complex on Riverbrink Court in the Settlers Landing development. A total of 43 townhomes were damaged, four of which were uninhabitable. The tornado weakened to an F1 before it downed trees onto All Saints Road. The tornado weakened to an F0 as it exited North Laurel and moved across Savage Park. Isolated reports of downed trees were received in the community, including on Red Jacket Way, Vollmerhausen Road, and at the intersection of Interstate 95 and Route 32. In its final stages, the tornado crossed the General Electric Appliance Park and downed its final tree at the intersection of Snowden River Parkway and Route 175 southeast of Columbia.In addition to the devastating tornado, the storms also produced very heavy rainfall and gusty winds. In Anne Arundel County, strong winds from the tornadic thunderstorm downed 13 trees between Laurel and Maryland City. In northern Carroll County, a bow echo produced damaging winds which downed trees along Bankard Road northwest of Union Mills. Rainfall totals included 3.93 inches in Millers, 3.30 inches in Manchester, and 3.26 inches in Westminster. In Montgomery County, 2 to 4 inches of rainfall across the western portion of the county caused low lying areas to quickly fill with water. Several roads were flooded including River Road and Falls Road. A motorist had to be rescued after their car stalled in high water in Poolsville. A total of 3.61 inches of rainfall was recorded in Damascus. In Howard County, between 2 and 3.75 inches of rain fell. A total of 2.86 inches was recorded in Columbia and 3.46 inches fell just southeast of the city. In Frederick County, several roads were flooded by heavy downpours including Ball Road off Route 355 and New Design Road south of Adamstown Road. Heavy rain downed trees at the intersection of Greenfield and Page Roads, Lingamore road and Gashouse Pike, Lawson Road and Route 75, and Bittle Road and Route 17. Street flooding was also reported in Point of Rocks on Route 28. Rainfall totals included 2.54 inches in Wolfsville and 2.30 inches in Frederick.

A thunderstorm with winds in excess of 55 MPH moved across Central Maryland between 9:30 and 11:00 PM EDT on the 31st. In Montgomery County, trees and power lines were downed from Gaithersburg east to the Howard County line. Some trees were downed onto roads. In Howard County, trees and power lines were downed. In Anne Arundel County, wires were downed across the northern portion of the county. In Baltimore County, thirteen trees were downed in the city of Baltimore.

Thunderstorms with very heavy rainfall, frequent lightning, and damaging winds moved through Central Maryland during the afternoon and early evening of the 30th. In Howard County, the Patapsco River overflowed sending water rushing down onto Route 1 in Elkridge. The highway remained closed for several hours and some cars became stalled in the high water. A total of 3.4 inches of rain was recorded in Elkridge and 2.53 inches of this total fell in one hour. Marble to quarter sized hail was reported in Columbia. In Prince George's County, a 16-year-old boy was struck by lightning in the Bowie area. He was treated for non-life threatening injuries. A home in Bowie on Pond Meadow Lane caught fire after being hit by lightning. In Calvert County, two homes were hit by lightning in Dunkirk and a corn field was flattened. Up to 3 inches of rain reportedly fell in only one hour. In Charles County, flooding was reported in Hughesville. Trees and power lines were downed countywide. In Anne Arundel County, storms with heavy downpours sat over the northern portion of the county during the afternoon and caused extensive flooding. Several roads were closed after creeks and streams overflowed. The southbound lanes of Ritchie Highway were closed after Cypress Creek overflowed. Flooding was also reported on Fort Smallwood Road, Rock Hill Road, and Forest Drive. Seven basements were flooded. An observer in Riviera Beach recorded 2 inches of rainfall in only 30 minutes. An observer in Annapolis reported 0.70 inches of rain in only 10 minutes. By early evening, these storms affected the entire county and contained frequent lightning and damaging winds. Officials reported 15 downed trees and power lines in the Linthicum area. Nine buildings were struck by lightning. One bolt started a two alarm fire at a home in Pasedena which resulted in $80,000 damage. Lightning also caused damage at Baltimore/Washington International Airport. A series of strikes over a 10 minute period burned two holes in Runway 1028 and damaged the airport's main radar tower. Rainfall totals included 5.53 inches in Riviera Beach, 4.24 inches at Baltimore/Washington International Airport, 3.44 inches in Millersville, and 3.00 inches in Odenton. Around 20,000 customers lost power across the county as a direct result of the storms.

During the afternoon of the 22nd, numerous showers and thunderstorms developed just east of the Appalachian Mountains and moved very slowly east across northwest and north central Maryland through the pre-dawn hours of the 23rd. These storms contained very heavy rainfall, frequent lightning, and occasionally produced high winds and large hail. In Allegany County, the heaviest rain fell across the southwestern portion of the county. Several basements were flooded in Rawlings and parts of Route 220 were covered in water. Heavy rainfall downed a tree onto a power line in Frostburg. In Washington County, heavy downpours downed trees in the western portion of the county. In Frederick County, nickel sized hail was reported on Route 40 west of Frederick. In Frederick pea sized hail fell and a wind gust of 50 MPH was estimated. Trees were downed by high winds in the Putman Road area 5 miles north-northwest of Frederick. Pea sized hail was reported in Poolesville. A spotter in Braddock Heights reported 2 inches of rainfall in 20 minutes. At Point of Rocks, the railroad crossing on Route 28 was flooded. A three story mansion was struck by lightning and the resulting fire caused $300,000 damage. Another lightning fire in Kemptown caused $20,000 damage. In Carroll County, some roads and low lying area were flooded in the Westminster and Melrose areas. Rainfall totals included 4.05 inches in Manchester and 2.41 inches in Westminster. Gunpowder River overflowed west of Linesboro. Rushing water downed power lines in the northern part of the county. Lightning started a garage on fire and $70,000 damage was reported. In Montgomery County, heavy rainfall caused roads to flood so quickly that three people had to be rescued from their cars. The hardest hit areas were in the vicinity of Olney, Wheaton, and Brighton Dam. Numerous roads had to be closed until the water subsided including Brighton Dam Road, Emory Lane, Muncaster Mill Road, Route 97, and West Willow Road. Route 97 was closed after the Hawlings River overflowed just north of Brookville. Rainfall totals included 5.00 inches in Brookville, 4.72 inches in Olney, 4.67 inches in Aspen Hill, 4.00 inches at Brighton Dam, 3.27 inches in Layhill, 2.68 inches in Potomac, and 2.46 inches in Bethesda. In Poolesville, a man was burned on his face as he tried to put out a lightning fire in a three story mansion. A garage with several vintage cars also caught fire after lightning hit the structure. In Howard County, high water closed Brighton Dam Road, Guilford Drive, Route 108, Route 216, Sheppards Lane, Green Bridge Road, Woodstream Drive, Old Frederick Road, Carrs Mill Road, Bethany Lane, Cedar Lane, Route 29, and Old Columbia Road. North Trotter Road was washed out by the Middle Patuxent River. Several people had to be rescued from their vehicles after roads quickly flooded. A mudslide closed Marriottsville Road in Ellicott City. Rainfall reports included an estimate of 5 inches just northeast of Clarkesville, 4.10 inches in Clarkesville, and 3.30 inches in Cooksville. In Harford County, heavy rain fell mainly across the far eastern portion of the county. Up to 7 inches of rainfall was reported at the Conowingo Dam on the Susquehanna River. Minor flooding was reported near Havre de Grace.

Thunderstorms that produced damaging winds, frequent lightning, large hail, and heavy downpours moved across central Maryland between 400 PM and 830 PM EDT on the 21st. In Frederick County, homes were damaged by lightning in Frederick, Green Valley, and New Market. High winds downed trees onto wires and roadways in the Frederick, Ballenger Creek, New Market, and Green Valley areas. In Howard County, trees were downed onto roads in West Friendship. In Prince George's County, nickel to quarter sized hail was reported in Laurel. A power pole was downed across the intersection of Cherry Lane and Van Dusen Road just north of Laurel Lake. Heavy rainfall caused Indian Creek to overflow its banks. Route 1 at Indian Creek was flooded. A culvert leading to Laurel Lake was also overwhelmed with runoff and overflowed.

Thunderstorms that produced wind gusts in excess of 55 MPH, large hail, heavy downpours, frequent lightning, and isolated tornadoes crossed the area during the afternoon and early evening hours of the 22nd. In St. Mary's County, an F0 tornado, possibly a waterspout that came ashore, crossed the southern tip of Jutland Neck 2 miles southwest of St. Inigoes. The tornado snapped large trees and destroyed a shed just off Smith Creek on Jutland Drive. The tornado was 50 yards wide and was on the ground for 1/4 of a mile. Elsewhere across the county, high winds downed several trees and power lines. Communities affected included Compton, MIles Town, Clements, Ridge, Leonardtown, Morganza, and Hollywood. At the intersection of Chancellors Run Road and Route 235, downed trees blocked the road. In Clements, a large tree was downed onto a mobile home and severely damaged the structure. One person inside the home suffered a minor knee injury. Marble sized hail was reported in Hollywood. Dime sized hail fell at Ridge and Point Lookout. Hail of unknown size fell in Leonardtown. Rainfall totals included 1.91 inches in Hollywood and 1.43 inches in Oraville. In Charles County, a waterspout that formed over the Potomac River came ashore on Cobb Island. The tornado cut a path across the central portion of the island as it moved northeast. Then it crossed Neale Sound and moved into the community of Rock Point on the mainland before it dissipated. The 100 yard wide tornado was on the ground for 1.8 miles and was ranked as an F1. Numerous trees were downed onto roads, cars, utility lines, and homes. Minor damage was reported to buildings in a three block area around Potomac River Drive. In Waldorf, a wind gust of 75 MPH and golfball sized hail was reported. Trees were downed by high wind in Indian Head and in other locations across the county. In Calvert County, an F0 tornado was spotted by an observer at Patuxent Naval Station and Skywarn spotters crossing the southern tip of Solomon's Island. The tornado was estimated to be 50 yards wide and on the ground for 1 mile before moving offshore and dissipating. A spotter traveling west out of Solomons spotted a wall cloud around the same time. Elsewhere across the county, trees and power lines were downed by high winds. Communities affected included Prince Frederick, Huntingtown, Barstow, and Sunderland. In Prince George's County, trees and power lines were downed. Heavy rain caused a stream to overflow its banks and wash out a low-lying bridge on Iverson Street in Silver Hill. A car was found in the creek after the bridge washed away. Several basements in the vicinity were flooded. In Cheverly, an unoccupied recycling building partially collapsed from water damage. Rainfall totals included 2.13 inches in Oxon Hill, 1.90 inches in Glenn Dale, 1.82 inches at Harry Truman Drive, 1.81 inches in District Heights, and 1.60 inches in South Bowie. In Anne Arundel County, high winds downed trees in Arnold. After a heavy downpour, water backed up onto the Severn River Bridge. King George Street in Annapolis was closed by high water for 2 hours. Rainfall totals included 2.60 inches in Annapolis, 1.75 inches in Millersville, and 1.53 inches at Baltimore-Washington International Airport. In Montgomery County, minor stream flooding was reported a the intersection of Shady Grove Road and Interstate 370. Flooding was also reported at the intersection of Braddock Road and Interstate 495. Rainfall totals include 2.48 inches at the Potomac Water Filtration Plant, 2.42 inches in Potomac, 2.05 inches in Rockville, 1.82 inches in Olney and Bethesda, and 1.73 inches at Brighton Dam. In Howard County, a total of 2.41 inches of rain fell in Elkridge. In the city of Baltimore, rainfall totals included 1.83 inches at Fort McHenry, 1.80 inches at Inner Harbor, and 1.55 inches at Carroll Park. In Allegany County after a heavy downpour, a spotter reported streams overflowing their banks onto roads and property in Cresaptown and Rawlings. At Savage River Dam in nearby Garrett County, a total of 1.63 inches of rainfall was recorded.

A strong cold front brought chilly air into the region on the 12th. By the afternoon of the 13th, an upper level disturbance brought warm air into the mid levels of the atmosphere and caused snow that fell from the system to melt to rain on its way down. When the rain hit the ground where temperatures were below freezing, ice accumulated. From Carroll and Montgomery Counties westward, the ice accumulated to between one quarter and one half inch. The wight of the ice brought down some trees, branches, telephone lines, and power lines. A few road were also closed by downed trees. At least 26,000 Central Maryland customers lost power as a direct result of the storm. Roads were turned into sheets of ice and several traffic accidents were reported. East of this area temperatures remained close to the freezing mark so ice accumulations were less than one quarter of an inch and only caused minor inconveniences. Because of slightly cooler air, Allegany County received mainly sleet and light snow with very little ice.

A vigorous cold front crossed the region between 4 AM and 9 AM on the 12th. As the front passed, northwest winds gusted to between 40 and 60 MPH and didn't begin to subside until midday. In Allegany County, a wind gust of 54 MPH was recorded in Cumberland and a gust of 52 MPH was recorded in Frostburg. Trees and power lines were downed and windows were blown out across the county. In Cumberland, a handful of trees and power lines were downed and roofing material blew off a building. In Frostburg, a metal shed was blown off its foundation into a parked car, light pole globes were broken, and vent slats on city hall were damaged. A 70-foot-tall communications tower on the peak of Dan's Mountain near Frostburg was blown over. The gusts that blew over the structure were so powerful that the guide wires securing the tower pulled concrete blocks out of the building to which they were anchored. In Washington County, winds gusted to 47 MPH in Hagerstown, 52 MPH in Sharpsburg, and 59 MPH in Williamsport. A directional sign was blown onto Interstate 70. Trees and wires were reported downed on Oreback Road, Dam No. 4 Road and in Fairplay. In Frederick County, large tree limbs were downed onto Route 15 at Point of Rocks. A wind gust of 44 MPH was recorded at the Frederick Airport. In Montgomery County, trees were downed near Barnesville and Dickerson Roads and on Monocacy Road. In Prince George's County, wind gusts included 53 MPH at Andrews AFB and 40 MPH at South Bowie. A total of 3000 customers lost power in the Maryland suburbs of Washington D.C. In Carroll County, a gust of 63 MPH was recorded at Manchester and a gust of 57 MPH was recorded at Millers. Over 3000 customers lost power after power lines were damaged. In Howard County, winds gusted to 46 MPH in Laurel. In Baltimore County, Key Bridge was closed to large trucks and motorcycles due to the high winds. A wind gust of 52 MPH was recorded at Martin State Airport and a gust of 45 MPH was reported in Parkton. In Owings Mills, winds gusting to up to 48 MPH damaged a building under construction and downed many trees. Nearly 12,000 customers in the Baltimore metropolitan area lost power. In Anne Arundel County, measured wind gusts included 60 MPH at Rivera Beach, 54 MPH at Baltimore/Washington International Airport, and 41 MPH at Millersville. In Harford County, Aberdeen Proving Grounds reported a wind gust of 43 MPH. Fallen trees knocked out power to a Havre de Grace school and almost 5000 other customers across the county. Several roads across the county including Route 543 and Boggs Road were closed by fallen trees. In Calvert County, utility poles were downed along Route 260, closing the highway in both directions. In St. Mary's County, winds gusted to 40 MPH at Patuxent Naval Station.

Scattered thunderstorms moved across central Maryland during the afternoon and early evening hours of the 7th. These storms produced winds in excess of 55 MPH, frequent lightning, and hail. In Frederick County, an apartment complex in Frederick was hit by lightning. The resulting fire left 4 families homeless and resulted in $750,000 in damage to the attic. In Howard County, lightning fires damaged over $100,000 worth of property in Columbia. Power was knocked out at the Howard County Fair for 12 hours which deactivated well water pumps and made taking care of animals difficult. High winds downed utility poles and wires in Ellicott City. In Montgomery County, dime sized hail fell in Damascus. High winds downed over 400 trees and power lines across the county. In Prince George's County, several trees and power lines were downed in Capitol Heights, Seat Pleasant, Suitland, and Upper Marlboro. Quarter sized hail was reported in Forestville and small hail was reported in Morningside and Suitland. A utility repairman restoring power in Upper Marlboro was critically injured after being shocked by a live electrical wire around 8:45 AM EDT on the 8th. Over 31,000 customers across central Maryland lost power as a direct result of the storms.

Thunderstorms that produced winds in excess of 55 MPH, large hail, heavy downpours, and frequent lightning moved across central Maryland during the evening of the 10th. The strongest storm produced a tornado that touched down extreme southern Howard County then moved east into Anne Arundel County. The F1 tornado was 100 yards wide and stayed on the ground for 2 miles. It formed just southeast of High Ridge then moved east and dissipated near Maryland City. It crossed Route 1 and passed through a populated area where it caused considerable damage. Near High Ridge, several trees and power lines were downed. The tornado blew out a plate glass window and damaged a revolving door. It also blew over a line of 6 power poles, two trailers, three 8000 lb. containers, and three semi-tractor trailers. Near Maryland City, several trees were downed onto roads and buildings and a trailer was damaged. Straight line winds in excess of 55 MPH caused damage south of the tornado's path. A wind gust of 43 MPH was recorded at Laurel in Howard County. In and around Anne Arundel County, trees were downed in Severna Park, Crofton, Crownsville, Hillsmere, Odenton, Edgewater, Savage, and Laurel. In Calvert County, a tree was downed onto a power line in Lusby. In St. Mary's County, trees were downed countywide. In Charles County, trees were downed in Bryan's Road, Waldorf, and La Plata. Lightning also started a fire at a home in Bryan's Road that extensively damaged the structure. A tree was felled onto a home in Waldorf. In Prince George's County, pea sized hail was reported in Greenbelt.

Thunderstorms developed across the area on the afternoon of the 26th. The strongest storms produced winds in excess of 55 MPH, frequent lightning, and heavy rainfall. In Frederick County, lightning downed trees and power lines in Emmitsburg, New Market and Ijamsville. A home was struck by lightning in New Midway and Middletown and a garage fire was started by lightning in Woodsboro. Pea sized hail was reported in Mar-Lu-Ridge. In Montgomery County, high winds downed trees onto Frederick Road. In addition, flooding was reported on Route 355 at the intersection of Frederick Road. In Howard County, trees were downed near Brighton Dam and on Highland Road. Savage Park reported a total of 1.39 inches of rain. In Calvert County, tree limbs were downed in Prince Frederick and a radio tower in Island Creek was damaged by lightning.

Thunderstorms which contained winds in excess of 55 MPH, heavy rainfall, and large hail developed ahead of a cold front during the evening of the 21st. The line of storms that moved across Montgomery and Prince George's Counties produced two tornadoes. The first tornado touched down in the Aspen Hill area of Montgomery County along Colesville Manor Drive. It move east across Northwest Branch Park and onto Scott Drive, Mills Avenue, Notley Street, and Paula Lynn Drive, then dissipated 1 mile north of Colesville. The F1 tornado was on the ground for 1 mile and was 30 yards wide . It downed numerous trees, including one which fell onto a house and another onto a shed. The second tornado, nearly 150 yards wide, touched down just east of Laurel near Route 197 and the Patuxent Greens Country Club. It damaged a garage door, tore an awning, and lifted shingles on golf course property, in addition to knocking down over 80 large trees. The F1 tornado continued east for one mile downing several other trees before dissipating near the Patuxent River. In addition to the tornado damage, straight line winds in excess of 55 MPH also damaged trees, power lines, and structures in Montgomery and Prince George's Counties. An apartment complex in Silver Spring suffered roof damage, shattered windows, ripped gutters, and damaged cinder block walls. Downed fences and several cars damaged by fallen trees were found nearby. Tree damage was also reported in Gaithersburg, the Rock Creek Valley neighborhood, Wheaton, and Laurel. In Howard County, high winds blew in a window and snapped trees south of Columbia. Winds estimated between 60 and 75 MPH downed numerous trees and power lines across northern Anne Arundel County, including the communities of Odenton, Glen Burnie, Crownsville, and Pasadena. In Frederick County, 1.75 inches of rain fell in Wolfsville and 1.57 inches was recorded in Frederick.

Thunderstorms producing winds in excess of 55 MPH, large hail, frequent lighting, and heavy downpours moved across Maryland during the afternoon and evening of the 24th. The storms struck first in Washington County, where dime sized hail was reported in Hagerstown and south of Smithsburg. Pea sized hail fell in Williamsport. In Frederick County, the storms left behind downed trees and power lines from Myersville to Thurmont. In Carroll County, dime sized hail fell in Mt. Airy and pea to marble sized hail fell in the Manchester and Melrose areas. In Baltimore County, pea sized hail was reported in Katonsville and marble size hail fell in Arbutus. In Howard County, hail ranging from the size of nickels to golfballs fell around Ellicott City. Interstate 70 and Route 99 were covered in hail and stripped leaves for a short time. Some homeowners in Ellicott City reported damage to siding, dented vehicles, and damaged vegetation. In Anne Arundel County, several trees and power lines were downed, leaving 8300 county customers without electricity. Officials in Glen Burnie, Pasadena, Gambrills, Loch Haven, Severna Park, Davidsonville, and Lothian reported downed trees blocking roads. Dime sized hail fell in Rivera Beach and Linthicum. In Prince George's County, power lines were downed in Bowie, Landover, and along Route 382 in the southeast portion of the county. The storm knocked out electricity to 8500 county customers. A wind gust of 55 MPH was recorded nearby at Washington National Airport. In Calvert County, trees were downed in Dunkirk.

Cold air was in place east of the Blue Ridge Mountains on the 29th and 30th, keeping surface temperatures below freezing. Low pressure moved from the Lower Mississippi Valley northeastward to the Mid-Atlantic region early on the 30th, creating the perfect conditions for freezing rain across South Central Maryland, a mix of sleet and snow in North Central Maryland, and moderate snowfall from Carroll County westward. Ice accumulations between 1/4 and 1 inch coated roads, trees, and power lines in St. Mary's, Charles, and Calvert Counties. Electrical outages were reported as trees and branches weighed down by ice fell onto power lines. Disruptions affected 1700 customers in Prince George's and Charles Counties, 4000 customers in Anne Arundel County, 600 customers in Baltimore, 2200 customers in Calvert County, and 4100 customers in St. Mary's County. St. Mary's County officials had to remove 60 downed trees after the storm. A mix of sleet, freezing rain, and snow fell across Prince George's and Anne Arundel Counties. Snow and sleet accumulations in this area ranged from 1 to 3 inches. Elsewhere 3 to 10 inches of snow and sleet fell. Storm total snow/sleet accumulations included 4.0 inches in Baltimore and Bel Air, 2 to 3 inches at Baltimore/Washington International Airport (BWI), 1 to 2 inches in Annapolis, 7.0 inches in Gaithersburg, 1.0 inch in Oxon Hill, 9.3 inches in Westminster, 10.0 inches in Frederick, 7.9 inches in Hagerstown, 5.0 inches in Cumberland, and 5.1 inches in Frostburg. Several traffic accidents were reported across the area, including one wreck which claimed the life of a 45-year-old woman on the Baltimore-Washington Parkway. One hospital in Anne Arundel County treated 25 people for car accident related injuries, 12 patients for slip and fall injuries, and 20 patients reporting heart-related problems, most likely due to shoveling snow. Passengers at both BWI and on commuter trains reported travel delays.

A strong cold front moved across Maryland during the morning of the 11th. As the front moved through, winds in excess of 55 MPH were reported in some locations. In Washington County, high winds downed trees and wires in Hagerstown where a wind gust of 45 MPH was recorded. In Frederick County, trees were downed onto roads in Emmitsburg, Middletown, and New Market and over 1000 power outages were reported. In Montgomery County, wind gusts included 50 MPH at Damascus, 51 MPH at Clarksburg, and 46 MPH at Germantown. Trees and power lines were downed in Potomac, Rockville, Gaithersburg, and Germantown. In Howard County, trees were downed onto Forsythe, Ten Oaks, and Nickel Roads in Columbia. A wind gust of 44 MPH was recorded in Ellicott City and Clarksville. In Harford County, several trees and power lines were downed in Bel Air, Abingdon, Norrisville, and Forest Hill. One tree toppled onto a car on Emmorton Road in Bel Air, seriously injuring a 28-year-old woman. A wind gust of 47 MPH was recorded in Hickory and a 52 MPH wind gust was recorded at Aberdeen Proving Ground. Nearly 2500 customers were without power by noon. Other recorded wind gusts included 55 MPH at Manchester and 40 MPH at Finksburg in Carroll County, 50 MPH at Laurel and 40 MPH at Andrews Air Force Base in Prince George's County, 57 MPH at Rivera Beach and 47 MPH at BWI Airport in Anne Arundel County, and 45 MPH at Hollywood in St. Mary's County.