Alert archive / Colorado / Winter Storm Warnings / 2021
Winter Storm Warnings in Colorado, March 2021
7 winter storm warnings in March 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 March 2021. Tap one for its archive.
- Winter Storm Warnings
- 7
- Busiest day
- March 11, 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 |
|---|---|---|---|---|
| Mar 11, 2:29 PM MST | Winter Storm Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 11 more | 4 days |
| Mar 11, 2:57 PM MST | Winter Storm Warning | PUB | Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 6 more | 3 days |
| Mar 12, 3:47 AM MST | Winter Storm Warning | GJT | Delta, Eagle, Garfield, Gunnison, Hinsdale, Montrose and 3 more | 3 days |
| Mar 15, 9:36 PM MDT | Winter Storm Warning | PUB | Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more | 34 hr |
| Mar 20, 2:11 PM MDT | Winter Storm Warning | BOU | Arapahoe, Boulder, Clear Creek, Douglas, Elbert, Gilpin and 6 more | 44 hr |
| Mar 21, 4:02 AM MDT | Winter Storm Warning | PUB | Custer, El Paso, Fremont, Huerfano, Pueblo, Teller | 31 hr |
| Mar 23, 3:55 AM MDT | Winter Storm Warning | PUB | Costilla, Huerfano, Las Animas | 38 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Huerfano County4
- Costilla County3
- Custer County3
- Fremont County3
- Las Animas County3
- Pueblo County3
- Arapahoe County2
- Boulder County2
- Clear Creek County2
- Douglas County2
- Elbert County2
- Gilpin County2
- Grand County2
- Jackson County2
- Jefferson County2
- Larimer County2
- Park County2
- Summit County2
- Alamosa County2
- Chaffee County2
- El Paso County2
- Saguache County2
- Teller County2
- Adams County1
- Broomfield County1
- Denver County1
- Morgan County1
- Weld County1
- Lake County1
- Delta County1
- Eagle County1
- Garfield County1
- Gunnison County1
- Hinsdale County1
- Montrose County1
- Ouray County1
- Pitkin County1
- San Miguel 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.