Alert archive / Utah / Winter Storm Warnings / 2021
Winter Storm Warnings in Utah, December 2021
10 winter storm warnings in December 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 winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in December 2021. Tap one for its archive.
- Winter Storm Warnings
- 10
- Busiest day
- December 8, 20212 winter storm warnings
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 |
|---|---|---|---|---|
| Dec 8, 12:16 PM MST | Winter Storm Warning | GJT | Daggett, Grand, San Juan, Uintah | 54 hr |
| Dec 8, 3:35 PM MST | Winter Storm Warning | SLC | Beaver, Carbon, Duchesne, Emery, Garfield, Iron and 14 more | 48 hr |
| Dec 13, 2:31 PM MST | Winter Storm Warning | GJT | Daggett, Grand, San Juan, Uintah | 47 hr |
| Dec 13, 3:55 PM MST | Winter Storm Warning | SLC | Beaver, Box Elder, Cache, Carbon, Davis, Duchesne and 19 more | 43 hr |
| Dec 22, 3:12 AM MST | Winter Storm Warning | SLC | Box Elder, Cache, Carbon, Davis, Duchesne, Emery and 9 more | 3 days |
| Dec 22, 3:34 AM MST | Winter Storm Warning | GJT | Daggett, Uintah | 3 days |
| Dec 25, 2:13 AM MST | Winter Storm Warning | SLC | Beaver, Box Elder, Cache, Davis, Duchesne, Garfield and 13 more | 36 hr |
| Dec 25, 2:59 PM MST | Winter Storm Warning | GJT | Daggett, Uintah | 4 days |
| Dec 27, 4:02 AM MST | Winter Storm Warning | SLC | Box Elder, Cache, Davis, Duchesne, Iron, Juab and 9 more | 31 hr |
| Dec 29, 2:53 PM MST | Winter Storm Warning | GJT | Grand, San Juan | 72 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Duchesne County5
- Juab County5
- Morgan County5
- Salt Lake County5
- Summit County5
- Utah County5
- Wasatch County5
- Weber County5
- Daggett County4
- Uintah County4
- Iron County4
- Kane County4
- Washington County4
- Box Elder County4
- Cache County4
- Davis County4
- Rich County4
- Grand County3
- San Juan County3
- Beaver County3
- Carbon County3
- Emery County3
- Garfield County3
- Piute County3
- Sanpete County3
- Wayne County3
- Millard County2
- Sevier County2
- Tooele 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.