Debris Flow in Utah

Events

90

Deaths

0

Injuries

5

Damage

$13 million

• Flash Flooding and Debris Flow in Utah, March 13 to 16, 20232 deaths · 1 injured · $71,000 · 58 kt wind · 21 eventsAnother winter storm brought gusty winds and accumulating snow to much of Utah in the middle of March. Precipitation combined with snowmelt also resulted in flooding, mostly in southern Utah, including noted fatalities in a popular slot canyon.
• Flash Flooding and Debris Flow in Utah, October 2, 2022$26 million · 0.8 in hail · 4 eventsSignificant clearing late in the morning resulted in the development of high instability across eastern Utah. This, paired with upper level support and ample moisture, produced strong to severe thunderstorms across the area in the late afternoon and early evening hours.
• Flash Flooding and Debris Flow in Utah, August 20, 2022$10 million · 6 eventsA midlevel Pacific low pressure system undercut the area of high pressure over the Great Basin as it dropped into the Northern Rockies. Monsoon moisture increased across the region with precipitable water values ranging from 125 to 175% of normal across the Four Corners.
• Debris Flow in Utah, October 8, 2011$12 million · 1 eventFollowing the storm system that brought heavy precipitation to Utah, a massive landslide occurred on the morning of Saturday, October 8th. This landslide caused significant damage along State Route 14 in southern Utah.
• Flash Flood and Debris Flows in Utah, July 28, 2021$2.5 million · 3 eventsSubstantial monsoon moisture remained over the area as high pressure drifted east over the Plains. As a result, widespread showers and thunderstorms developed with many storms producing heavy rain.
• Tornado and Flash Flooding in Utah, September 6 to 9, 2013$1.2 million · EF0 · 17 eventsAfter a brief break from showers and thunderstorms, significant moisture and instability returned to Utah, with flash flooding, large hail, and even a tornado reported across the state.
• Flash Flooding and Debris Flow in Utah, September 10 to 14, 2013$1.2 million · 1 in hail · 16 eventsA Pacific storm system, combined with deep subtropical moisture, produced widespread heavy precipitation across Utah. This led to flooding across many parts of the state, with significant damages reported in several locations.
• Debris Flow and Avalanche in Utah, April 10 to 13, 20231 injured · $1.2 million · 4 eventsSnowmelt brought enhanced flows, with avalanches, flooding and debris flows.
• Flash Flooding and Debris Flow in Utah, August 1 to 5, 2013$350,000 · 70 kt wind · 6 eventsThunderstorms continued across Utah for the beginning of August. These storms produced flash flooding across primarily central Utah, and one storm produced a strong microburst in the Salt Lake Valley.
• Debris Flow and Avalanche in Utah, April 6 to 11, 20232 injured · $100,000 · 2 eventsA warm stretch with record snowpack was associated with several avalanches and debris flows.
• Flash Flooding and Debris Flows in Utah, August 8 to 10, 2019$149,000 · 63 kt wind · 9 eventsSeveral rounds of thunderstorms between August 8 and August 10 resulted in numerous reports of flash flooding, debris flows from burn scars, and severe winds. Heavy rain over Little Cottonwood Canyon resulted in a debris flow that resulted in damage to state Route 210.
• Flash Flooding and Debris Flows in Utah, July 16 to 20, 2013$90,000 · 15 eventsAfter a week where only isolated flash flooding impacted the state of Utah, a very moist air mass moved over the area once again. Flash flooding was reported in many locations across the state, including nearly-daily debris flows coming off the Seeley Fire burn scar.
• Flash Flooding and Debris Flows in Utah, September 1 to 4, 2013$75,000 · 53 kt wind · 13 eventsThe moist airmass that was over Utah in late August continued through the first few days of September, helping produce several flash floods across the state.
• Flash Flooding and Debris Flows in Utah, September 1 to 4, 2023$41,000 · 61 kt wind · 21 eventsAn active pattern resulted in strong wind gusts in addition to isolated flash flooding to start the month of September.
• Debris Flows and Flood in Utah, August 1, 2021$78,000 · 7 eventsAbundant monsoon moisture remained in place across eastern Utah. This, paired with increased instability, resulted in another round of showers and thunderstorms with the stronger storms producing heavy rain.
• Debris Flow and Hail in Utah, June 2 to 3, 2015$55,000 · 1.5 in hail · 13 eventsStrong thunderstorms continued to move across northern Utah on June 2 and 3, with several storms producing strong gusty winds or large hail.
• Flash Flooding and Debris Flow in Utah, August 27 to 31, 2013$55,000 · 69 kt wind · 10 eventsThe deep monsoonal moisture remained over Utah through the end of August, resulting in more flash flooding and severe wind gusts.
• Flash Flood and Debris Flow in Utah, July 14, 2015$75,000 · 2 eventsTwo flash floods were observed in the eastern half of Utah on July 14, including a significant flash flood in Capitol Reef National Park.
• Flash Flooding and Debris Flow in Utah, July 5 to 9, 2015$50,000 · 67 kt wind · 8 eventsDeep moisture remained in place over Utah heading into the second week of July, helping produce flash flooding in both northern and southern Utah. In addition, strong thunderstorm winds were recorded in northwest Utah on July 8.
• Debris Flows and Damaging Wind in Utah, July 14, 2021$50,000 · 61 kt wind · 6 eventsA broad midlevel trough moved across eastern Utah and acted on ample residual monsoonal moisture to produce numerous showers and thunderstorms across the area. Some storms produced gusty winds to 70 mph as well as heavy rain which led to localized debris flows in San Juan County.
• Debris Flows and Flood in Utah, July 25, 2021$52,000 · 5 eventsAbundant monsoon moisture remained in place across the Western Slope. As a result, another round of widespread showers and thunderstorms developed across the area with many storms producing heavy rain.
• Flash Flooding and Debris Flow in Utah, August 1, 2022$28,000 · 57 kt wind · 11 eventsThunderstorms developed across the state on August 1, with several producing damaging outflow winds across northern Utah and isolated flash flooding in central Utah.
• Debris Flow in Utah, April 6 to 7, 2004$40,000 · 1 eventThunderstorms associated with a relatively mild upper-level Pacific storm system trained from southwest to northeast over the Farmington canyon area Tuesday evening April 6, 2004.
• Flash Flood and Debris Flow in Utah, July 6, 2022$35,000 · 2 eventsNear the end of the first week of the month, isolated Flash Flooding occurred in central Utah.
• Flash Flooding and Debris Flows in Utah, August 22 to 26, 2013$20,000 · 1 in hail · 13 eventsDeep moisture remained in place over Utah, resulting in continued flash flooding in central and southern Utah, particularly at burn scars. In northern Utah, several thunderstorms became severe, producing gusty winds and large hail.

Debris Flow everywhereEvery kind of event in Utah

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.