Alert archive / Colorado / Winter Storm Warnings / 2020
Winter Storm Warnings in Colorado, December 2020
3 winter storm warnings in December 2020. 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 2020. Tap one for its archive.
- Winter Storm Warnings
- 3
- Busiest day
- December 27, 20202 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 12, 10:16 AM MST | Winter Storm Warning | PUB | Baca, Las Animas, Prowers | 21 hr |
| Dec 27, 2:41 PM MST | Winter Storm Warning | GJT | Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more | 48 hr |
| Dec 27, 3:19 PM MST | Winter Storm Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more | 48 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Las Animas County2
- Baca County1
- Prowers County1
- Archuleta County1
- Dolores County1
- Hinsdale County1
- La Plata County1
- Montezuma County1
- San Juan County1
- San Miguel County1
- Alamosa County1
- Chaffee County1
- Conejos County1
- Costilla County1
- Custer County1
- Fremont County1
- Huerfano County1
- Mineral County1
- Rio Grande County1
- Saguache County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.