Alert archive / Colorado / Winter Storm Warnings / 2021
Winter Storm Warnings in Colorado, December 2021
14 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
- 14
- Busiest day
- December 8, 20213 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, 11:25 AM MST | Winter Storm Warning | BOU | Boulder, Grand, Jackson, Larimer | 54 hr |
| Dec 8, 12:16 PM MST | Winter Storm Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 54 hr |
| Dec 8, 12:54 PM MST | Winter Storm Warning | PUB | Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache | 52 hr |
| Dec 13, 2:31 PM MST | Winter Storm Warning | GJT | Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more | 47 hr |
| Dec 13, 3:17 PM MST | Winter Storm Warning | PUB | Conejos, Mineral, Rio Grande | 47 hr |
| Dec 22, 3:34 AM MST | Winter Storm Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 3 days |
| Dec 22, 2:33 PM MST | Winter Storm Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 68 hr |
| Dec 22, 3:09 PM MST | Winter Storm Warning | PUB | Chaffee, Conejos, Costilla, Huerfano, Lake, Las Animas and 3 more | 67 hr |
| Dec 25, 1:48 PM MST | Winter Storm Warning | BOU | Grand, Jackson | 66 hr |
| Dec 25, 2:56 PM MST | Winter Storm Warning | PUB | Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache | 4 days |
| Dec 25, 2:59 PM MST | Winter Storm Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 4 days |
| Dec 29, 1:18 PM MST | Winter Storm Warning | BOU | Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more | 70 hr |
| Dec 29, 2:45 PM MST | Winter Storm Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more | 3 days |
| Dec 29, 2:53 PM MST | Winter Storm Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 72 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Archuleta County5
- Dolores County5
- Hinsdale County5
- La Plata County5
- Montezuma County5
- San Juan County5
- San Miguel County5
- Conejos County5
- Mineral County5
- Rio Grande County5
- Grand County4
- Jackson County4
- Delta County4
- Eagle County4
- Garfield County4
- Gunnison County4
- Mesa County4
- Moffat County4
- Montrose County4
- Pitkin County4
- Rio Blanco County4
- Routt County4
- Chaffee County4
- Lake County4
- Saguache County4
- Boulder County3
- Larimer County3
- Ouray County3
- Clear Creek County2
- Gilpin County2
- Jefferson County2
- Park County2
- Summit County2
- Costilla County2
- Huerfano County2
- Las Animas County2
- Broomfield County1
- Douglas County1
- Weld County1
- Alamosa County1
2 more counties
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.