Alert archive / Colorado / Red Flag Warnings / 2026
Red Flag Warnings in Colorado, June 2026
55 red flag warnings in June 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 June 2026. Tap one for its archive.
- Red Flag Warnings
- 55
- Busiest day
- June 29, 20264 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 |
|---|---|---|---|---|
| Jun 3, 10:10 AM MDT | Red Flag Warning | GJT | Moffat, Rio Blanco | 33 hr |
| Jun 5, 10:47 AM MDT | Red Flag Warning | GJT | Delta, Dolores, Garfield, La Plata, Mesa, Moffat and 5 more | 34 hr |
| Jun 5, 10:47 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 59 hr |
| Jun 5, 1:00 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Logan, Morgan, Weld | 30 hr |
| Jun 6, 12:35 PM MDT | Red Flag Warning | PUB | Fremont, Huerfano | 32 hr |
| Jun 7, 11:38 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 33 hr |
| Jun 7, 11:38 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 58 hr |
| Jun 7, 12:33 PM MDT | Red Flag Warning | PUB | Fremont, Huerfano, Pueblo | 30 hr |
| Jun 8, 11:17 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 59 hr |
| Jun 8, 1:03 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 7 more | 32 hr |
| Jun 8, 3:37 PM MDT | Red Flag Warning | PUB | Alamosa, Bent, Conejos, Costilla, Crowley, Fremont and 5 more | 28 hr |
| Jun 9, 1:32 AM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson, Yuma | 18 hr |
| Jun 9, 12:57 PM MDT | Red Flag Warning | BOU | Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 6 more | 31 hr |
| Jun 9, 1:24 PM MDT | Red Flag Warning | PUB | Alamosa, Bent, Conejos, Costilla, Fremont, Huerfano and 6 more | 31 hr |
| Jun 10, 12:43 AM MDT | Red Flag Warning | GLD | Cheyenne, Kit Carson | 19 hr |
| Jun 10, 11:51 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Gunnison, Hinsdale, La Plata and 3 more | 32 hr |
| Jun 10, 12:45 PM MDT | Red Flag Warning | PUB | Bent, Crowley, Fremont, Huerfano, Kiowa, Las Animas and 2 more | 31 hr |
| Jun 11, 10:23 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 35 hr |
| Jun 11, 2:57 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Fremont, Huerfano and 5 more | 29 hr |
| Jun 12, 1:12 PM MDT | Red Flag Warning | GJT | Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 1 more | 31 hr |
| Jun 12, 2:32 PM MDT | Red Flag Warning | PUB | Chaffee, Lake, Pueblo | 28 hr |
| Jun 14, 11:34 AM MDT | Red Flag Warning | GJT | Delta, Eagle, Garfield, Mesa, Montrose, Ouray and 1 more | 32 hr |
| Jun 15, 10:36 AM MDT | Red Flag Warning | GJT | Delta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 9 more | 34 hr |
| Jun 15, 3:36 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Fremont, Lake and 3 more | 29 hr |
| Jun 16, 11:38 AM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more | 32 hr |
| Jun 16, 11:46 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 33 hr |
| Jun 16, 1:04 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 32 hr |
| Jun 17, 1:25 PM MDT | Red Flag Warning | PUB | Chaffee, Lake | 30 hr |
| Jun 19, 11:08 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Crowley, Custer and 11 more | 35 hr |
| Jun 19, 11:29 AM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more | 34 hr |
| Jun 19, 11:41 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 34 hr |
| Jun 20, 11:03 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Fremont, Lake and 3 more | 35 hr |
| Jun 20, 10:41 PM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Gunnison, Hinsdale, La Plata and 5 more | 45 hr |
| Jun 21, 12:46 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Lake, Mineral and 2 more | 43 hr |
| Jun 22, 11:46 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 34 hr |
| Jun 22, 12:18 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Park and 1 more | 32 hr |
| Jun 22, 1:09 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Fremont, Lake and 3 more | 32 hr |
| Jun 23, 12:05 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more | 30 hr |
| Jun 23, 2:04 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Lake, Rio Grande and 1 more | 29 hr |
| Jun 24, 1:01 PM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 3 days |
| Jun 25, 11:08 AM MDT | Red Flag Warning | GJT | Dolores, Garfield, La Plata, Mesa, Moffat, Montezuma and 3 more | 61 hr |
| Jun 26, 12:24 AM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 48 hr |
| Jun 26, 10:00 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 35 hr |
| Jun 26, 10:58 AM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 59 hr |
| Jun 27, 12:45 PM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 8 more | 32 hr |
| Jun 27, 1:11 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 32 hr |
| Jun 28, 12:07 AM MDT | Red Flag Warning | GJT | Delta, Dolores, La Plata, Montezuma, Montrose, Ouray and 1 more | 3 hr |
| Jun 28, 12:40 PM MDT | Red Flag Warning | BOU | Arapahoe, Boulder, Clear Creek, Douglas, Elbert, Gilpin and 5 more | 32 hr |
| Jun 28, 12:50 PM MDT | Red Flag Warning | PUB | Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 15 more | 33 hr |
| Jun 28, 10:04 PM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more | 22 hr |
| Jun 29, 8:36 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Crowley, Custer and 11 more | 36 hr |
| Jun 29, 11:43 AM MDT | Red Flag Warning | GJT | Delta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 10 more | 33 hr |
| Jun 29, 12:48 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 32 hr |
| Jun 30, 12:54 AM MDT | Red Flag Warning | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more | 45 hr |
| Jun 30, 1:19 PM MDT | Red Flag Warning | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 9 more | 31 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Delta County20
- Dolores County19
- La Plata County19
- Montezuma County19
- Montrose County19
- San Miguel County19
- Garfield County18
- Mesa County18
- Ouray County18
- Gunnison County17
- Hinsdale County17
- Moffat County16
- Rio Blanco County16
- Eagle County16
- Pitkin County16
- Fremont County16
- Alamosa County15
- Conejos County15
- Costilla County15
- Rio Grande County15
- Saguache County15
- Chaffee County15
- Lake County15
- Archuleta County14
- San Juan County14
- Huerfano County13
- Mineral County12
- Pueblo County11
- Las Animas County11
- Boulder County8
- Clear Creek County8
- Gilpin County8
- Grand County8
- Park County8
- Summit County8
- Jackson County7
- Custer County7
- El Paso County7
- Teller County7
- Douglas County6
24 more counties
- Routt County6
- Larimer County6
- Crowley County5
- Arapahoe County4
- Bent County4
- Jefferson County4
- Adams County3
- Logan County3
- Morgan County3
- Weld County3
- Elbert County3
- Lincoln County3
- Kiowa County3
- Prowers County3
- Otero County3
- Broomfield County2
- Denver County2
- Phillips County2
- Sedgwick County2
- Cheyenne County2
- Kit Carson County2
- Washington County1
- Yuma County1
- Baca County1
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.