Alert archive / Colorado / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Colorado, August 2021
58 severe thunderstorm warnings in August 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 58
- Busiest day
- August 19, 202126 severe thunderstorm 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 |
|---|---|---|---|---|
| Jul 31, 6:12 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 33 min |
| Jul 31, 6:27 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Las Animas | 33 min |
| Jul 31, 6:52 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Las Animas | 22 min |
| Aug 6, 8:28 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 32 min |
| Aug 7, 1:48 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 42 min |
| Aug 7, 2:29 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 33 min |
| Aug 7, 2:58 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 32 min |
| Aug 7, 3:28 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 16 min |
| Aug 10, 6:27 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 24 min |
| Aug 12, 7:16 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 29 min |
| Aug 12, 7:45 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 45 min |
| Aug 12, 7:49 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 26 min |
| Aug 12, 7:52 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 29 min |
| Aug 12, 7:56 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 34 min |
| Aug 14, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 32 min |
| Aug 14, 7:38 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 52 min |
| Aug 14, 8:01 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 44 min |
| Aug 14, 8:28 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 47 min |
| Aug 14, 8:29 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 46 min |
| Aug 14, 8:43 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 47 min |
| Aug 14, 9:15 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 14 min |
| Aug 14, 9:28 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 47 min |
| Aug 19, 12:06 PM MDT | Severe Thunderstorm Warning | GJT | Montrose, San Miguel | 24 min |
| Aug 19, 1:32 PM MDT | Severe Thunderstorm Warning | GJT | Dolores, San Miguel | 28 min |
| Aug 19, 2:24 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Broomfield, Jefferson | 36 min |
| Aug 19, 2:30 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 30 min |
| Aug 19, 2:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 29 min |
| Aug 19, 2:49 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 26 min |
| Aug 19, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 31 min |
| Aug 19, 3:14 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 46 min |
| Aug 19, 3:35 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 25 min |
| Aug 19, 3:38 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 52 min |
| Aug 19, 3:42 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 33 min |
| Aug 19, 3:44 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 31 min |
| Aug 19, 3:48 PM MDT | Severe Thunderstorm Warning | GJT | San Miguel | 27 min |
| Aug 19, 3:49 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 41 min |
| Aug 19, 3:51 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 24 min |
| Aug 19, 4:04 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 41 min |
| Aug 19, 4:05 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 25 min |
| Aug 19, 4:07 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 32 min |
| Aug 19, 4:17 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 43 min |
| Aug 19, 4:18 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 42 min |
| Aug 19, 4:25 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 35 min |
| Aug 19, 4:32 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 28 min |
| Aug 19, 4:52 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 23 min |
| Aug 19, 5:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 30 min |
| Aug 19, 5:04 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 25 min |
| Aug 19, 5:34 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 26 min |
| Aug 19, 6:21 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 24 min |
| Aug 19, 6:41 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 49 min |
| Aug 19, 6:46 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 44 min |
| Aug 19, 7:31 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 59 min |
| Aug 19, 8:44 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 31 min |
| Aug 19, 9:14 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 46 min |
| Aug 25, 11:50 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Weld | 40 min |
| Aug 26, 2:52 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| Aug 26, 3:12 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 63 min |
| Aug 26, 4:05 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 48 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Yuma County8
- Weld County7
- Kit Carson County6
- Elbert County6
- Phillips County6
- Logan County5
- Cheyenne County4
- Adams County4
- Arapahoe County4
- Baca County3
- Lincoln County3
- Sedgwick County3
- San Miguel County3
- Morgan County3
- Las Animas County2
- Washington County2
- Douglas County2
- El Paso County1
- Montrose County1
- Dolores County1
- Boulder County1
- Broomfield County1
- Jefferson 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.