Alert archive / Colorado / Winter Storm Warnings / 2026
Winter Storm Warnings in Colorado, May 2026
3 winter storm warnings in May 2026. 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 May 2026. Tap one for its archive.
- Winter Storm Warnings
- 3
- Busiest day
- May 4, 20261 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 |
|---|---|---|---|---|
| May 4, 12:51 AM MDT | Winter Storm Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 10 more | 61 hr |
| May 4, 11:38 PM MDT | Winter Storm Warning | PUB | Alamosa, Costilla, Custer, El Paso, Fremont, Huerfano and 4 more | 42 hr |
| May 17, 10:58 PM MDT | Winter Storm Warning | BOU | Boulder, Grand, Jackson, Larimer | 22 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boulder County2
- Grand County2
- Jackson County2
- Larimer County2
- Adams County1
- Arapahoe County1
- Broomfield County1
- Clear Creek County1
- Denver County1
- Douglas County1
- Elbert County1
- Gilpin County1
- Jefferson County1
- Park County1
- Summit County1
- Weld County1
- Alamosa County1
- Costilla County1
- Custer County1
- El Paso County1
- Fremont County1
- Huerfano County1
- Las Animas County1
- Pueblo County1
- Saguache County1
- Teller County1
Nearby
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.