Power Outage in Layton, UT

A tornado first touched down in North Salt Lake at Redwood Road and 900 W around 628 PM MDT. The tornado moved to the northeast through a mix of industrial and residential areas. The tornado produced EF0 damage (winds 65 to 85 MPH) to numerous trees and several homes in the Cloverdale neighborhood. The tornado continued to move off to the northeast, producing more EF0 damage to the Woods Cross Public Works building and a nearby construction site. The tornado reached peak intensity along 1100 W, producing EF1 damage (winds 86 to 110 MPH) where it uprooted a healthy mature tree and leaned a wooden power pole. The tornado continued to the north, weakening, but still producing EF0 damage before lifting off the ground.||The tornado then made a second touchdown in a field near 800 W where it produced EF0 damage to a business in the area and began moving northward along 800 W. Tree damage and minor property damage indicative of an EF0 tornado was widespread along this swath. Large diameter tree limbs (in excess of 12 inches) were broken off and deposited throughout the area. The tornado then dissipated in the area of 1500 S and Interstate 15 around 634 PM MDT.||The rating for this tornado is EF1 with winds as high as 110 MPH. The tornado had an intermittent track length of about 2 miles over 7 minutes and a max-width of approximately 350 yards with an average width of approximately 150 yards.

A strong line of thunderstorms moved through the northern Wasatch Front, with maximum recorded wind gusts of 64 mph at the Bountiful KSL sensor and 59 mph at the Centerville UDOT sensor. Power poles were knocked down along the Legacy Highway, causing a closure while crews repaired the damage.

A major Pacific storm system slowly moved east over Utah and brought incredible amounts of rain and snow to most locations. Strong southwest flow ahead of an upper level trough tapped tropical moisture southwest of Hawaii. This moisture streamed northeastward over the state from Sunday the 17th through Friday the 22nd. Many areas in Washington county reported flash flooding. Several bridges were washed away and many people reported flooded basements. Heavy snow fell at higher elevations in the mountains near the Elk Meadows Ski Resort where 5 feet of the white stuff was measured. The heavy, wet snow knocked down power lines in the mountains of southwest Utah. Many mountain roads east and southeast of Cedar City became impassible. Several homes in the Cedar Meadows subdivision in Cedar City were completely flooded by the heavy rains. In St. George, the Virgin River was running 25 to 30 feet higher than average by the 21st. Northern Utah did not escape the flooding and heavy, wet snow. A flash flood was reported in Centerville after 1.51 inches of rain fell in a two hour period. Heavy snow also fell in the mountains of the north with 56 inches on Mt. Baldy above Alta, 36 inches in Alta, 25 inches in Thaynes Canyon above Park City, 24 inches at Snowbird, and 22 inches at Trial Lake. It was the snowiest October on record for Alta and Silver Lake Brighton. Alta recorded 81 inches and Silver Lake Brighton came in with 77.5. The water equivalent of the snow that fell was also impressive with 7.91 inches at Lava Point in Zion National Park, 7.80 inches at Snowbird, 7.60 inches at Timpanogos Divide, 6.54 in Thaynes Canyon, 6.20 inches at Rocky Basin in the Oquirrh mountains, 5.54 inches at Alta, and 5.20 inches in Farmington Canyon.The worst flooding problems with this storm system occurred in Washington and Iron counties. Flooding along the La Verkin Creek in Zion National Park trapped several hikers. Rushing water unable to make its way around debris underneath a bridge on Coal Creek in Cedar City caused water to flood homes in a nearby subdivision. High water on the Ash and La Verkin Creeks took out several bridges in Toquerville. Water from the overflowing Baker Dam Reservoir flooded homes in the town of Brookside along the Santa Clara River. Basement and Creek/River flooding was reported in Escalante, New Harmony, Hilldale, Farmington, Draper, and Herriman.The following stations recorded their wettest October on record. Silver Lake Brighton with 10.22 inches, Ogden with 7.50 inches, Alpine 5.91, Zion National Park and Kanab 5.83 inches, Logan 5.62 inches, Brigham City 5.41, Farmington 5.29, Milford 4.83, Pleasant Grove 4.81, Cedar City 3.80, and Myton 3.30.Salt Lake City recorded a record tying 13 days of measurable precipitation. October 2004 was the fourth wettest month on record in Salt Lake City with 3.48 inches.

A weak upper level trough moved through northern Utah bringing with it a line of strong thunderstorms and one severe storm that brought down power lines and two power poles. A 60 mph hour gust was recorded at the Salt Lake International Airport. Gusts around 50 mph were common between 8 and 9 pm local time.