Alert archive / Utah / Flash Flood Watches / 2021
Flash Flood Watches in Utah, August 2021
8 flash flood watches in August 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Flash Flood Watches
- 8
- Busiest day
- August 1, 20213 flash flood watches
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:05 AM MDT | Flash Flood Watch | GJT | Grand, San Juan, Uintah | 18 hr |
| Aug 1, 3:21 AM MDT | Flash Flood Watch | SLC | Beaver, Carbon, Duchesne, Emery, Garfield, Iron and 13 more | 21 hr |
| Aug 1, 1:25 PM MDT | Flash Flood Watch | GJT | Daggett, Grand, San Juan, Uintah | 35 hr |
| Aug 2, 2:04 AM MDT | Flash Flood Watch | SLC | Beaver, Box Elder, Cache, Carbon, Davis, Duchesne and 19 more | 18 hr |
| Aug 16, 2:18 PM MDT | Flash Flood Watch | SLC | Beaver, Carbon, Duchesne, Emery, Garfield, Iron and 13 more | 64 hr |
| Aug 17, 1:10 PM MDT | Flash Flood Watch | GJT | Daggett, Grand, San Juan, Uintah | 59 hr |
| Aug 30, 2:17 PM MDT | Flash Flood Watch | GJT | Grand, San Juan | 58 hr |
| Aug 30, 2:19 PM MDT | Flash Flood Watch | SLC | Beaver, Carbon, Duchesne, Emery, Garfield, Iron and 11 more | 57 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Juan County8
- Grand County4
- Beaver County4
- Carbon County4
- Duchesne County4
- Emery County4
- Garfield County4
- Iron County4
- Juab County4
- Kane County4
- Millard County4
- Piute County4
- Sanpete County4
- Sevier County4
- Utah County4
- Wasatch County4
- Washington County4
- Wayne County4
- Uintah County3
- Salt Lake County3
- Summit County3
- Daggett County2
- Box Elder County1
- Cache County1
- Davis County1
- Morgan County1
- Rich County1
- Weber County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.