Alert archive / Utah / 2020
Weather alerts in Utah, December 2020
13 weather alerts in December 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in December 2020. Tap one for its archive.
- Alerts
- 13
- Warnings
- 0
- Watches
- 1
- Advisories
- 12
- Busiest day
- December 11, 20203 alerts
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 1, 2:51 PM MST | Wind Advisory | SLC | 31 hr | |
| Dec 11, 3:11 AM MST | Winter Storm Watch | SLC | 12 hr | |
| Dec 11, 3:20 AM MST | Winter Weather Advisory | GJT | Grand, San Juan | 48 hr |
| Dec 11, 3:03 PM MST | Winter Weather Advisory | SLC | 29 hr | |
| Dec 13, 3:26 AM MST | Winter Weather Advisory | SLC | 36 hr | |
| Dec 16, 3:03 AM MST | Winter Weather Advisory | SLC | 48 hr | |
| Dec 19, 1:49 AM MST | Dense Fog Advisory | GJT | Grand, Uintah | 7 hr |
| Dec 19, 6:03 PM MST | Dense Fog Advisory | SLC | 16 hr | |
| Dec 19, 6:26 PM MST | Dense Fog Advisory | GJT | Grand, Uintah | 20 hr |
| Dec 22, 2:44 AM MST | Winter Weather Advisory | SLC | 27 hr | |
| Dec 22, 2:49 AM MST | Wind Advisory | SLC | 32 hr | |
| Dec 27, 2:41 PM MST | Winter Weather Advisory | GJT | Grand, Uintah | 48 hr |
| Dec 27, 3:40 PM MST | Winter Weather Advisory | SLC | 42 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 7 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.