Winter Weather Advisories in Colorado
2,227 winter weather advisories since 1986. 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 weather advisories reaches back to 2005.
Winter Weather Advisories by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Winter Weather Advisories
- 2,227
- Busiest year
- 2011161 winter weather advisories
- Average year
- 101over 22 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garfield County577
- Routt County534
- Saguache County523
- Moffat County521
- Grand County518
- Rio Blanco County505
- Eagle County501
- Boulder County489
- Chaffee County487
- Montrose County484
- Park County465
- Jackson County464
- Gunnison County456
- Jefferson County453
- Lake County447
- San Miguel County439
- Larimer County439
- Pitkin County438
- Clear Creek County432
- Gilpin County432
- Delta County421
- Summit County416
- Mesa County404
- Ouray County376
- Rio Grande County375
- Hinsdale County365
- Mineral County357
- Fremont County343
- Conejos County333
- Dolores County328
- Huerfano County317
- Custer County312
- La Plata County310
- Montezuma County310
- Archuleta County305
- Las Animas County302
- Costilla County293
- El Paso County281
- San Juan County266
- Alamosa County260
24 more counties
- Teller County247
- Pueblo County246
- Douglas County241
- Arapahoe County217
- Elbert County217
- Adams County174
- Weld County160
- Broomfield County153
- Kit Carson County148
- Yuma County145
- Denver County141
- Lincoln County131
- Cheyenne County128
- Washington County102
- Morgan County96
- Sedgwick County96
- Logan County95
- Phillips County95
- Baca County88
- Kiowa County81
- Otero County80
- Crowley County78
- Prowers County77
- Bent County73
The latest winter weather advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 4:27 AM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 41 hr |
| May 16, 8:44 PM MDT | Winter Weather Advisory | GJT | Moffat, Routt | 45 hr |
| May 5, 10:03 AM MDT | Winter Weather Advisory | GLD | Cheyenne, Kit Carson, Yuma | 27 hr |
| May 4, 11:24 AM MDT | Winter Weather Advisory | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 10 more | 55 hr |
| May 4, 12:51 AM MDT | Winter Weather Advisory | BOU | Adams, Arapahoe, Elbert, Grand, Jackson, Lincoln and 5 more | 61 hr |
| May 4, 12:06 AM MDT | Winter Weather Advisory | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 66 hr |
| Apr 29, 12:34 PM MDT | Winter Weather Advisory | PUB | Chaffee, Custer, Fremont, Huerfano, Lake | 46 hr |
| Apr 29, 12:22 PM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 39 hr |
| Apr 26, 12:53 PM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 17 hr |
| Apr 25, 1:19 PM MDT | Winter Weather Advisory | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 41 hr |
| Apr 25, 12:42 PM MDT | Winter Weather Advisory | PUB | Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache | 35 hr |
| Apr 16, 10:55 PM MDT | Winter Weather Advisory | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 17 hr |
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.