Alert archive / Colorado / Red Flag Warnings / 2026
Red Flag Warnings in Colorado, April 2026
38 red flag warnings in April 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 red flag warnings reaches back to 2005.
Red Flag Warnings by county
Each county as a circle sized by its count in April 2026. Tap one for its archive.
- Red Flag Warnings
- 38
- Busiest day
- April 2, 20265 red flag 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 |
|---|---|---|---|---|
| Apr 1, 12:18 PM MDT | Red Flag Warning | PUB | Baca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more | 32 hr |
| Apr 1, 11:58 PM MDT | Red Flag Warning | BOU | Elbert, Lincoln | 20 hr |
| Apr 2, 12:02 AM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson | 18 hr |
| Apr 2, 12:57 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 10 more | 30 hr |
| Apr 2, 12:58 PM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 30 hr |
| Apr 2, 2:51 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Conejos, Costilla, Crowley and 10 more | 29 hr |
| Apr 5, 12:57 PM MDT | Red Flag Warning | PUB | Baca | 31 hr |
| Apr 9, 10:08 PM MDT | Red Flag Warning | GJT | Garfield, Mesa, Moffat, Rio Blanco | 22 hr |
| Apr 10, 11:47 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 45 hr |
| Apr 11, 10:31 PM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson | 21 hr |
| Apr 11, 11:13 PM MDT | Red Flag Warning | BOU | Arapahoe, Clear Creek, Douglas, Elbert, Gilpin, Jefferson and 5 more | 21 hr |
| Apr 12, 12:12 AM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 45 hr |
| Apr 12, 11:50 AM MDT | Red Flag Warning | BOU | Arapahoe, Clear Creek, Douglas, Elbert, Gilpin, Jefferson and 4 more | 32 hr |
| Apr 13, 12:18 AM MDT | Red Flag Warning | PUB | Baca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more | 44 hr |
| Apr 13, 11:54 AM MDT | Red Flag Warning | BOU | Elbert, Lincoln | 32 hr |
| Apr 13, 9:02 PM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson | 23 hr |
| Apr 15, 11:43 AM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Clear Creek, Douglas, Elbert, Gilpin and 4 more | 33 hr |
| Apr 15, 12:35 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 34 hr |
| Apr 15, 11:15 PM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 21 hr |
| Apr 16, 12:44 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Conejos, Costilla, Las Animas, Rio Grande and 1 more | 29 hr |
| Apr 17, 11:33 PM MDT | Red Flag Warning | BOU | Logan, Morgan, Phillips, Sedgwick, Washington, Weld | 19 hr |
| Apr 18, 12:31 AM MDT | Red Flag Warning | GLD | Yuma | 18 hr |
| Apr 18, 12:35 PM MDT | Red Flag Warning | PUB | Baca | 32 hr |
| Apr 19, 12:35 PM MDT | Red Flag Warning | PUB | Baca, Prowers | 30 hr |
| Apr 20, 12:16 AM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 71 hr |
| Apr 20, 8:48 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 13 more | 51 hr |
| Apr 20, 10:17 PM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 47 hr |
| Apr 21, 10:55 AM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 37 hr |
| Apr 22, 12:20 AM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 44 hr |
| Apr 22, 11:04 AM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 32 hr |
| Apr 22, 12:22 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 13 more | 31 hr |
| Apr 23, 10:13 AM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 34 hr |
| Apr 23, 12:15 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more | 32 hr |
| Apr 23, 1:41 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 10 more | 30 hr |
| Apr 23, 10:08 PM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 22 hr |
| Apr 24, 10:31 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Huerfano, Lake and 3 more | 33 hr |
| Apr 26, 1:17 AM MDT | Red Flag Warning | PUB | Baca, Las Animas | 19 hr |
| Apr 27, 1:16 PM MDT | Red Flag Warning | PUB | Alamosa, Conejos, Costilla, Rio Grande, Saguache | 30 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baca County14
- Las Animas County12
- Huerfano County10
- Prowers County10
- Alamosa County10
- Conejos County10
- Costilla County10
- Rio Grande County10
- Saguache County10
- Bent County9
- Crowley County9
- El Paso County9
- Kiowa County9
- Otero County9
- Pueblo County9
- Elbert County9
- Lincoln County9
- Cheyenne County8
- Kit Carson County8
- Arapahoe County7
- Douglas County7
- Jefferson County7
- Washington County7
- Weld County7
- Fremont County7
- Chaffee County7
- Lake County7
- Larimer County6
- Yuma County6
- Custer County6
- Teller County6
- Clear Creek County6
- Gilpin County6
- Park County6
- Adams County5
- Morgan County5
- Boulder County4
- Broomfield County4
- Denver County4
- Logan County4
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.