Alert archive / Colorado / Flash Flood Warnings / 2021
Flash Flood Warnings in Colorado, August 2021
54 flash flood 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Flash Flood Warnings
- 54
- Busiest day
- August 3, 202114 flash flood 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, 6:00 PM MDT | Flash Flood Warning | PUB | Costilla, Huerfano | 3 hr |
| Jul 31, 6:11 PM MDT | Flash Flood Warning | GJT | Garfield, Mesa | 109 min |
| Jul 31, 6:11 PM MDT | Flash Flood Warning | PUB | Custer, Fremont, Huerfano, Pueblo | 2 hr |
| Jul 31, 6:20 PM MDT | Flash Flood Warning | PUB | Huerfano, Las Animas | 3 hr |
| Jul 31, 6:21 PM MDT | Flash Flood Warning | PUB | Baca | 3 hr |
| Jul 31, 7:00 PM MDT | Flash Flood Warning | GJT | Garfield, Mesa | 2 hr |
| Jul 31, 8:28 PM MDT | Flash Flood Warning | PUB | Las Animas | 3 hr |
| Jul 31, 10:45 PM MDT | Flash Flood Warning | PUB | Pueblo | 4 hr |
| Jul 31, 11:24 PM MDT | Flash Flood Warning | PUB | Bent, Otero | 4 hr |
| Jul 31, 11:41 PM MDT | Flash Flood Warning | PUB | Pueblo | 4 hr |
| Aug 1, 2:43 AM MDT | Flash Flood Warning | PUB | Pueblo | 3 hr |
| Aug 2, 3:47 PM MDT | Flash Flood Warning | BOU | Jackson, Larimer | 3 hr |
| Aug 2, 3:49 PM MDT | Flash Flood Warning | PUB | Chaffee, Fremont | 2 hr |
| Aug 2, 4:11 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 2, 5:19 PM MDT | Flash Flood Warning | PUB | Saguache | 3 hr |
| Aug 2, 6:26 PM MDT | Flash Flood Warning | BOU | Larimer | 116 min |
| Aug 2, 6:47 PM MDT | Flash Flood Warning | PUB | Huerfano | 2 hr |
| Aug 2, 7:38 PM MDT | Flash Flood Warning | PUB | Huerfano | 96 min |
| Aug 2, 8:27 PM MDT | Flash Flood Warning | GJT | Eagle, Garfield | 2 hr |
| Aug 2, 8:43 PM MDT | Flash Flood Warning | GJT | Garfield, Mesa | 2 hr |
| Aug 3, 12:16 PM MDT | Flash Flood Warning | GJT | San Miguel | 88 min |
| Aug 3, 2:54 PM MDT | Flash Flood Warning | GJT | Eagle, Garfield | 111 min |
| Aug 3, 2:58 PM MDT | Flash Flood Warning | BOU | Elbert | 2 hr |
| Aug 3, 3:21 PM MDT | Flash Flood Warning | GJT | San Miguel | 104 min |
| Aug 3, 3:27 PM MDT | Flash Flood Warning | GJT | Eagle, Garfield, Pitkin | 2 hr |
| Aug 3, 4:05 PM MDT | Flash Flood Warning | BOU | Adams, Arapahoe | 115 min |
| Aug 3, 4:46 PM MDT | Flash Flood Warning | PUB | Costilla | 3 hr |
| Aug 3, 5:13 PM MDT | Flash Flood Warning | PUB | Pueblo | 3 hr |
| Aug 3, 5:26 PM MDT | Flash Flood Warning | PUB | Teller | 109 min |
| Aug 3, 7:03 PM MDT | Flash Flood Warning | PUB | Bent | 3 hr |
| Aug 3, 7:06 PM MDT | Flash Flood Warning | PUB | Las Animas, Otero, Pueblo | 3 hr |
| Aug 4, 1:59 PM MDT | Flash Flood Warning | PUB | Bent | 3 hr |
| Aug 4, 3:31 PM MDT | Flash Flood Warning | PUB | Prowers | 119 min |
| Aug 6, 6:53 PM MDT | Flash Flood Warning | BOU | Larimer | 2 hr |
| Aug 12, 7:28 PM MDT | Flash Flood Warning | GLD | Kit Carson | 3 hr |
| Aug 12, 11:41 PM MDT | Flash Flood Warning | BOU | Douglas | 94 min |
| Aug 13, 2:27 PM MDT | Flash Flood Warning | BOU | Grand | 2 hr |
| Aug 13, 5:39 PM MDT | Flash Flood Warning | BOU | Grand | 2 hr |
| Aug 14, 6:48 PM MDT | Flash Flood Warning | BOU | Larimer | 115 min |
| Aug 15, 2:01 AM MDT | Flash Flood Warning | PUB | Costilla, Huerfano | 3 hr |
| Aug 15, 1:50 PM MDT | Flash Flood Warning | PUB | Chaffee, Saguache | 2 hr |
| Aug 15, 3:08 PM MDT | Flash Flood Warning | PUB | Chaffee | 2 hr |
| Aug 16, 3:53 PM MDT | Flash Flood Warning | BOU | Jackson, Larimer | 112 min |
| Aug 16, 4:24 PM MDT | Flash Flood Warning | BOU | Grand | 111 min |
| Aug 16, 4:32 PM MDT | Flash Flood Warning | BOU | Larimer | 118 min |
| Aug 17, 4:41 PM MDT | Flash Flood Warning | BOU | Larimer | 2 hr |
| Aug 18, 3:14 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 18, 4:20 PM MDT | Flash Flood Warning | GJT | Eagle, Garfield | 3 hr |
| Aug 19, 6:40 AM MDT | Flash Flood Warning | GJT | Garfield, Mesa | 86 min |
| Aug 19, 5:09 PM MDT | Flash Flood Warning | BOU | Phillips | 3 hr |
| Aug 19, 7:43 PM MDT | Flash Flood Warning | BOU | Phillips | 3 hr |
| Aug 19, 7:50 PM MDT | Flash Flood Warning | GLD | Yuma | 5 hr |
| Aug 19, 10:38 PM MDT | Flash Flood Warning | BOU | Phillips | 4 hr |
| Aug 20, 2:15 AM MDT | Flash Flood Warning | BOU | Larimer | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Larimer County10
- Garfield County8
- Huerfano County6
- Pueblo County6
- Mesa County4
- Eagle County4
- Costilla County3
- Las Animas County3
- Bent County3
- Chaffee County3
- Grand County3
- Phillips County3
- Fremont County2
- Otero County2
- Jackson County2
- Saguache County2
- San Miguel County2
- Custer County1
- Baca County1
- Elbert County1
- Pitkin County1
- Adams County1
- Arapahoe County1
- Teller County1
- Prowers County1
- Kit Carson County1
- Douglas County1
- Yuma 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.