Severe Thunderstorm Warnings in Colorado
19,373 severe thunderstorm warnings 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 19,373
- Busiest year
- 20231,187 severe thunderstorm warnings
- Average year
- 473over 41 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with 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.
- Weld County1,833
- El Paso County1,687
- Kit Carson County1,565
- Yuma County1,503
- Las Animas County1,315
- Pueblo County1,273
- Washington County1,250
- Lincoln County1,206
- Elbert County1,199
- Kiowa County1,125
- Adams County1,114
- Baca County1,108
- Cheyenne County1,097
- Prowers County1,079
- Bent County988
- Arapahoe County985
- Logan County911
- Morgan County858
- Otero County818
- Crowley County604
- Douglas County514
- Denver County494
- Huerfano County454
- Phillips County428
- Sedgwick County403
- Larimer County395
- Jefferson County369
- Fremont County347
- Boulder County274
- Teller County274
- Custer County215
- Mesa County208
- Rio Blanco County149
- Moffat County142
- Garfield County134
- Saguache County121
- Broomfield County113
- Montrose County84
- Montezuma County78
- Park County76
23 more counties
- Delta County65
- La Plata County62
- Costilla County60
- San Miguel County52
- Dolores County51
- Alamosa County50
- Routt County47
- Rio Grande County43
- Clear Creek County42
- Gilpin County38
- Grand County29
- Conejos County28
- Archuleta County28
- Chaffee County26
- Eagle County23
- Jackson County22
- Ouray County21
- Hinsdale County15
- Gunnison County15
- Pitkin County14
- San Juan County7
- Mineral County6
- Summit County5
The latest severe thunderstorm warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 12:28 AM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 19 min |
| Sep 21, 12:07 AM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 23 min |
| Sep 20, 11:39 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 51 min |
| Sep 20, 11:15 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 11 min |
| Sep 20, 10:56 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Crowley, Kiowa, Otero | 49 min |
| Sep 20, 10:53 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 52 min |
| Sep 20, 10:51 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 39 min |
| Sep 20, 10:50 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 25 min |
| Sep 20, 10:44 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 46 min |
| Sep 20, 10:29 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 46 min |
| Sep 20, 10:23 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 37 min |
| Sep 20, 10:20 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Crowley, Otero, Pueblo | 40 min |
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. Rebuilt daily.