Alert archive / Colorado / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Colorado, 1999
359 severe thunderstorm warnings in 1999. 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 1999. Tap one for its archive.
- Severe Thunderstorm Warnings
- 359
- Busiest month
- June118 severe thunderstorm warnings
- Busiest day
- May 22, 199918 severe thunderstorm warnings
Over time
By month
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 21, 5:58 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 47 min |
| Apr 25, 4:12 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 48 min |
| Apr 28, 4:12 PM MDT | Severe Thunderstorm Warning | PUB | Crowley | 33 min |
| Apr 28, 4:20 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 45 min |
| Apr 28, 4:47 PM MDT | Severe Thunderstorm Warning | PUB | Crowley | 58 min |
| Apr 28, 5:15 PM MDT | Severe Thunderstorm Warning | PUB | Otero | 60 min |
| May 3, 4:27 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 43 min |
| May 10, 7:40 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 55 min |
| May 13, 6:45 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 45 min |
| May 13, 7:25 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 20 min |
| May 13, 7:42 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 48 min |
| May 13, 8:40 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 50 min |
| May 14, 4:13 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 47 min |
| May 15, 8:28 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 47 min |
| May 15, 9:12 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 48 min |
| May 15, 9:56 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 34 min |
| May 16, 4:07 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero | 58 min |
| May 16, 4:47 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 43 min |
| May 16, 5:03 PM MDT | Severe Thunderstorm Warning | PUB | Bent | 62 min |
| May 16, 5:03 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Kiowa, Otero | 62 min |
| May 16, 5:38 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 37 min |
| May 16, 5:56 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 64 min |
| May 16, 5:57 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| May 16, 6:00 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa | 60 min |
| May 16, 6:20 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 60 min |
| May 16, 6:47 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| May 16, 6:53 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa, Prowers | 62 min |
| May 16, 6:58 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 47 min |
| May 19, 3:16 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 29 min |
| May 19, 3:27 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 28 min |
| May 19, 3:37 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 43 min |
| May 19, 3:43 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 47 min |
| May 21, 6:41 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Fremont | 59 min |
| May 21, 6:58 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Sedgwick | 47 min |
| May 22, 3:17 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| May 22, 3:23 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 52 min |
| May 22, 3:36 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 59 min |
| May 22, 3:50 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 60 min |
| May 22, 3:53 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 52 min |
| May 22, 4:04 PM MDT | Severe Thunderstorm Warning | GJT | Dolores, Montezuma | 56 min |
| May 22, 4:14 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 46 min |
| May 22, 4:19 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 61 min |
| May 22, 4:39 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 61 min |
| May 22, 4:50 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 30 min |
| May 22, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 47 min |
| May 22, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 31 min |
| May 22, 5:25 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 35 min |
| May 22, 5:33 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 42 min |
| May 22, 5:46 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 59 min |
| May 22, 5:57 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 33 min |
| May 22, 6:24 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 61 min |
| May 22, 6:30 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 45 min |
| May 22, 6:34 PM MDT | Severe Thunderstorm Warning | GJT | Delta | 46 min |
| May 23, 2:52 PM MDT | Severe Thunderstorm Warning | BOU | Park | 38 min |
| May 23, 3:10 PM MDT | Severe Thunderstorm Warning | GJT | La Plata | 20 min |
| May 23, 4:36 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 54 min |
| May 24, 1:56 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 34 min |
| May 24, 2:30 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 65 min |
| May 24, 4:56 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 64 min |
| May 24, 5:52 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 63 min |
| May 24, 7:07 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 48 min |
| May 28, 3:00 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 30 min |
| May 28, 3:28 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 42 min |
| May 28, 4:09 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 31 min |
| May 29, 2:04 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas | 41 min |
| May 29, 4:22 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 63 min |
| May 29, 4:25 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 40 min |
| May 29, 5:15 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa | 60 min |
| May 29, 5:41 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 34 min |
| May 29, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 40 min |
| May 29, 6:19 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 26 min |
| May 29, 6:34 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 31 min |
| May 29, 6:40 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 60 min |
| May 29, 6:41 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 34 min |
| May 29, 6:41 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 34 min |
| May 29, 6:55 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 65 min |
| May 29, 7:04 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 41 min |
| May 29, 8:02 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 63 min |
| May 30, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 35 min |
| May 30, 4:07 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| May 30, 5:48 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 62 min |
| May 30, 6:15 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 45 min |
| May 30, 6:50 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 60 min |
| May 31, 2:11 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 34 min |
| May 31, 2:35 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 40 min |
| May 31, 3:04 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 26 min |
| May 31, 3:24 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 36 min |
| May 31, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 34 min |
| May 31, 3:45 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 60 min |
| May 31, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 50 min |
| May 31, 4:07 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 33 min |
| May 31, 4:23 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 37 min |
| May 31, 6:55 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 50 min |
| May 31, 7:30 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 65 min |
| May 31, 7:37 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Jefferson | 38 min |
| May 31, 8:28 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 62 min |
| May 31, 9:02 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 63 min |
| Jun 1, 8:44 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 31 min |
| Jun 2, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 46 min |
| Jun 2, 5:01 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 49 min |
| Jun 2, 5:11 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 44 min |
| Jun 2, 5:39 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 51 min |
| Jun 2, 6:39 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 51 min |
| Jun 2, 8:10 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 35 min |
| Jun 8, 3:42 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 58 min |
| Jun 8, 5:39 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa, Prowers | 56 min |
| Jun 9, 6:38 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 62 min |
| Jun 9, 7:40 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 65 min |
| Jun 10, 1:54 PM MDT | Severe Thunderstorm Warning | BOU | Jefferson | 36 min |
| Jun 10, 2:14 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 61 min |
| Jun 10, 2:27 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Jefferson | 33 min |
| Jun 10, 3:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 45 min |
| Jun 10, 3:31 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 59 min |
| Jun 10, 3:42 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 33 min |
| Jun 10, 4:10 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 50 min |
| Jun 10, 7:28 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 47 min |
| Jun 10, 7:31 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 64 min |
| Jun 10, 8:31 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 59 min |
| Jun 10, 9:28 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 62 min |
| Jun 10, 11:36 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 59 min |
| Jun 11, 1:01 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 44 min |
| Jun 11, 1:42 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 48 min |
| Jun 11, 2:00 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 60 min |
| Jun 11, 2:26 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas | 34 min |
| Jun 11, 2:36 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 39 min |
| Jun 11, 2:54 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 51 min |
| Jun 11, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 46 min |
| Jun 11, 3:48 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 62 min |
| Jun 11, 4:40 PM MDT | Severe Thunderstorm Warning | PUB | Custer | 60 min |
| Jun 11, 4:45 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 60 min |
| Jun 11, 5:11 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 64 min |
| Jun 11, 5:17 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 58 min |
| Jun 11, 5:52 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano | 63 min |
| Jun 11, 6:20 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 60 min |
| Jun 11, 7:31 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 44 min |
| Jun 11, 8:07 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| Jun 11, 8:36 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 64 min |
| Jun 11, 9:12 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano | 63 min |
| Jun 11, 9:19 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 66 min |
| Jun 12, 1:15 PM MDT | Severe Thunderstorm Warning | BOU | Jefferson, Park | 30 min |
| Jun 12, 1:20 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 30 min |
| Jun 12, 1:44 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 46 min |
| Jun 12, 1:48 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 42 min |
| Jun 12, 2:35 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas, Elbert | 35 min |
| Jun 12, 2:57 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 33 min |
| Jun 12, 3:20 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 65 min |
| Jun 12, 3:29 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 46 min |
| Jun 12, 3:29 PM MDT | Severe Thunderstorm Warning | BOU | Denver | 46 min |
| Jun 12, 4:50 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 65 min |
| Jun 12, 5:49 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 26 min |
| Jun 14, 2:35 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 25 min |
| Jun 14, 2:38 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 47 min |
| Jun 14, 3:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 30 min |
| Jun 14, 3:21 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 39 min |
| Jun 15, 6:28 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 47 min |
| Jun 15, 8:09 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 46 min |
| Jun 16, 2:45 PM MDT | Severe Thunderstorm Warning | PUB | Costilla | 30 min |
| Jun 16, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Gilpin, Grand | 35 min |
| Jun 16, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek | 35 min |
| Jun 16, 4:11 PM MDT | Severe Thunderstorm Warning | PUB | Saguache | 59 min |
| Jun 16, 5:12 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 48 min |
| Jun 16, 6:31 PM MDT | Severe Thunderstorm Warning | GJT | Rio Blanco | 49 min |
| Jun 16, 7:03 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 47 min |
| Jun 17, 3:56 PM MDT | Severe Thunderstorm Warning | PUB | Rio Grande | 59 min |
| Jun 17, 4:06 PM MDT | Severe Thunderstorm Warning | GJT | Rio Blanco | 44 min |
| Jun 17, 4:41 PM MDT | Severe Thunderstorm Warning | PUB | Rio Grande | 34 min |
| Jun 17, 4:47 PM MDT | Severe Thunderstorm Warning | GJT | Rio Blanco | 43 min |
| Jun 17, 5:01 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 44 min |
| Jun 17, 5:18 PM MDT | Severe Thunderstorm Warning | GJT | Garfield, Mesa | 52 min |
| Jun 17, 6:17 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 43 min |
| Jun 19, 7:56 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 34 min |
| Jun 19, 8:31 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 29 min |
| Jun 21, 6:46 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 49 min |
| Jun 21, 7:26 PM MDT | Severe Thunderstorm Warning | GJT | Delta | 44 min |
| Jun 22, 5:11 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 59 min |
| Jun 22, 5:17 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 43 min |
| Jun 22, 5:35 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 60 min |
| Jun 23, 6:05 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 60 min |
| Jun 23, 8:08 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver | 37 min |
| Jun 23, 8:08 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 37 min |
| Jun 23, 8:47 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas, Elbert | 43 min |
| Jun 23, 9:20 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 60 min |
| Jun 23, 9:58 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 47 min |
| Jun 23, 11:26 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero | 29 min |
| Jun 25, 4:26 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 34 min |
| Jun 25, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 36 min |
| Jun 25, 6:18 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 42 min |
| Jun 25, 6:20 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 60 min |
| Jun 25, 6:27 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| Jun 25, 6:30 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 45 min |
| Jun 26, 7:20 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 40 min |
| Jun 26, 7:33 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 27 min |
| Jun 26, 9:44 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 46 min |
| Jun 26, 10:30 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 60 min |
| Jun 26, 11:29 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 61 min |
| Jun 27, 10:25 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 50 min |
| Jun 27, 10:33 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 42 min |
| Jun 27, 11:43 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 32 min |
| Jun 28, 12:16 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 29 min |
| Jun 28, 12:43 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 32 min |
| Jun 28, 1:15 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 30 min |
| Jun 28, 1:15 AM MDT | Severe Thunderstorm Warning | GLD | Yuma | 65 min |
| Jun 28, 2:22 AM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| Jun 30, 2:29 AM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Jun 30, 2:34 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 41 min |
| Jun 30, 3:35 AM MDT | Severe Thunderstorm Warning | PUB | Crowley | 55 min |
| Jun 30, 6:38 AM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 47 min |
| Jun 30, 7:15 AM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 60 min |
| Jun 30, 7:39 AM MDT | Severe Thunderstorm Warning | GLD | Yuma | 51 min |
| Jun 30, 8:16 AM MDT | Severe Thunderstorm Warning | PUB | Prowers | 59 min |
| Jun 30, 9:08 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 32 min |
| Jun 30, 10:24 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 51 min |
| Jun 30, 10:49 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 41 min |
| Jun 30, 11:16 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 49 min |
| Jul 1, 12:22 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 23 min |
| Jul 1, 12:24 AM MDT | Severe Thunderstorm Warning | GLD | Yuma | 61 min |
| Jul 1, 12:28 AM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 32 min |
| Jul 1, 12:45 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 25 min |
| Jul 1, 12:48 AM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 47 min |
| Jul 1, 1:27 AM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 28 min |
| Jul 1, 2:38 AM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 62 min |
| Jul 1, 3:16 AM MDT | Severe Thunderstorm Warning | PUB | Prowers | 59 min |
| Jul 1, 6:42 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 48 min |
| Jul 1, 11:19 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 46 min |
| Jul 2, 2:29 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jul 2, 2:42 PM MDT | Severe Thunderstorm Warning | PUB | Bent | 63 min |
| Jul 2, 3:56 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 64 min |
| Jul 2, 4:41 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 59 min |
| Jul 2, 5:28 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 62 min |
| Jul 2, 6:16 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 59 min |
| Jul 2, 6:29 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 61 min |
| Jul 5, 4:13 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 62 min |
| Jul 5, 5:16 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 59 min |
| Jul 5, 6:17 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 58 min |
| Jul 5, 7:32 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 63 min |
| Jul 5, 8:47 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 58 min |
| Jul 6, 6:10 PM MDT | Severe Thunderstorm Warning | PUB | Chaffee | 65 min |
| Jul 11, 4:05 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 40 min |
| Jul 15, 5:07 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 58 min |
| Jul 18, 3:01 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas | 59 min |
| Jul 19, 2:53 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 52 min |
| Jul 19, 3:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 44 min |
| Jul 19, 6:38 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 52 min |
| Jul 19, 8:25 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 35 min |
| Jul 22, 7:08 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 47 min |
| Jul 24, 4:41 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 59 min |
| Jul 24, 5:30 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 30 min |
| Jul 24, 6:18 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Weld | 42 min |
| Jul 24, 7:20 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 30 min |
| Jul 25, 4:19 PM MDT | Severe Thunderstorm Warning | PUB | Saguache | 61 min |
| Jul 26, 4:15 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 20 min |
| Jul 26, 4:19 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 61 min |
| Jul 26, 6:08 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 62 min |
| Jul 26, 6:24 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 61 min |
| Jul 26, 7:19 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 61 min |
| Jul 27, 5:07 PM MDT | Severe Thunderstorm Warning | GJT | Archuleta, Hinsdale, La Plata | 53 min |
| Jul 28, 5:30 PM MDT | Severe Thunderstorm Warning | GJT | Delta | 60 min |
| Jul 28, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 45 min |
| Jul 28, 6:06 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 54 min |
| Jul 28, 6:06 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 59 min |
| Jul 30, 3:11 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 64 min |
| Jul 30, 4:34 PM MDT | Severe Thunderstorm Warning | GJT | Delta, Montrose | 56 min |
| Jul 30, 6:06 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 64 min |
| Jul 31, 2:12 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 58 min |
| Jul 31, 3:17 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 63 min |
| Jul 31, 5:48 PM MDT | Severe Thunderstorm Warning | GJT | Delta, Montrose | 62 min |
| Jul 31, 11:05 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 60 min |
| Aug 7, 2:37 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 38 min |
| Aug 8, 3:47 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 43 min |
| Aug 8, 6:23 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 42 min |
| Aug 10, 1:29 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 46 min |
| Aug 10, 2:22 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano | 33 min |
| Aug 10, 2:43 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 37 min |
| Aug 10, 2:50 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 25 min |
| Aug 10, 3:08 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 47 min |
| Aug 10, 3:20 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 25 min |
| Aug 10, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 35 min |
| Aug 10, 3:47 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 43 min |
| Aug 10, 4:05 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 50 min |
| Aug 10, 4:52 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 38 min |
| Aug 10, 5:01 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 49 min |
| Aug 10, 5:31 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 44 min |
| Aug 10, 5:52 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 48 min |
| Aug 10, 6:12 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington, Weld | 63 min |
| Aug 10, 6:41 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 34 min |
| Aug 11, 12:09 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 31 min |
| Aug 11, 12:39 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 46 min |
| Aug 11, 12:54 PM MDT | Severe Thunderstorm Warning | GJT | Delta, Mesa, Montrose | 61 min |
| Aug 11, 1:23 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 62 min |
| Aug 11, 3:39 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 31 min |
| Aug 17, 1:25 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 50 min |
| Aug 17, 3:24 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 51 min |
| Aug 17, 3:44 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 31 min |
| Aug 17, 4:14 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 46 min |
| Aug 17, 4:57 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 63 min |
| Aug 17, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 30 min |
| Aug 17, 5:59 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 31 min |
| Aug 17, 7:08 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 42 min |
| Aug 19, 4:41 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 49 min |
| Aug 19, 4:43 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 62 min |
| Aug 23, 5:47 PM MDT | Severe Thunderstorm Warning | GJT | La Plata | 28 min |
| Aug 26, 2:14 PM MDT | Severe Thunderstorm Warning | GJT | Ouray | 61 min |
| Aug 28, 1:34 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 26 min |
| Aug 28, 1:57 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas, Elbert | 33 min |
| Aug 28, 3:22 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 58 min |
| Aug 28, 3:33 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 62 min |
| Aug 28, 3:44 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 31 min |
| Aug 28, 6:17 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 48 min |
| Aug 28, 6:19 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 46 min |
| Aug 28, 7:07 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| Aug 29, 1:52 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 63 min |
| Aug 29, 2:55 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 35 min |
| Aug 29, 3:58 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Elbert, Lincoln | 30 min |
| Aug 29, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 35 min |
| Aug 29, 5:51 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 64 min |
| Aug 30, 5:04 PM MDT | Severe Thunderstorm Warning | PUB | Saguache | 31 min |
| Aug 30, 6:50 PM MDT | Severe Thunderstorm Warning | GJT | Garfield, Rio Blanco | 60 min |
| Aug 30, 7:36 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 44 min |
| Aug 30, 8:21 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 49 min |
| Sep 1, 2:12 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 33 min |
| Sep 1, 2:45 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 30 min |
| Sep 1, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 49 min |
| Sep 1, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 30 min |
| Sep 1, 6:29 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 31 min |
| Sep 1, 6:39 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 36 min |
| Sep 2, 1:44 PM MDT | Severe Thunderstorm Warning | GJT | Archuleta, La Plata | 61 min |
| Sep 2, 2:32 PM MDT | Severe Thunderstorm Warning | GJT | Garfield, Rio Blanco | 58 min |
| Sep 2, 4:31 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer | 44 min |
| Sep 2, 4:43 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 47 min |
| Sep 2, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 30 min |
| Sep 2, 5:31 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 44 min |
| Sep 2, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek, Gilpin, Jefferson | 35 min |
| Sep 2, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 45 min |
| Sep 2, 6:13 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 47 min |
| Sep 2, 6:15 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 35 min |
| Sep 2, 7:21 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 29 min |
| Sep 2, 7:30 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 45 min |
| Sep 2, 8:02 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 43 min |
| Sep 2, 8:31 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 44 min |
| Sep 3, 3:31 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 49 min |
| Sep 3, 3:47 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 43 min |
| Sep 3, 3:47 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 43 min |
| Sep 3, 3:53 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 62 min |
| Sep 3, 4:29 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Weld | 41 min |
| Sep 3, 5:02 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Jefferson | 43 min |
| Sep 3, 5:02 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 43 min |
| Sep 3, 5:13 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 32 min |
| Sep 3, 5:25 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 35 min |
| Sep 3, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 45 min |
| Sep 3, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 45 min |
| Sep 3, 5:51 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 39 min |
| Sep 3, 6:32 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 43 min |
| Sep 3, 7:08 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 52 min |
| Sep 3, 8:00 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 45 min |
| Sep 3, 8:23 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 62 min |
| Sep 3, 9:15 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 45 min |
| Sep 11, 2:15 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 50 min |
| Sep 19, 4:10 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 50 min |
| Oct 7, 2:03 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 62 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Weld County41
- Yuma County30
- Kit Carson County30
- Adams County24
- El Paso County22
- Morgan County22
- Logan County20
- Washington County20
- Denver County20
- Arapahoe County19
- Lincoln County18
- Elbert County17
- Mesa County15
- Kiowa County14
- Baca County13
- Cheyenne County12
- Douglas County12
- Larimer County11
- Prowers County10
- Phillips County10
- Sedgwick County9
- Garfield County8
- Jefferson County8
- Las Animas County7
- Moffat County7
- Crowley County6
- Delta County6
- Pueblo County6
- Boulder County6
- Rio Blanco County5
- Otero County4
- Bent County4
- La Plata County4
- Huerfano County4
- Saguache County3
- Montrose County3
- Park County2
- Gilpin County2
- Clear Creek County2
- Rio Grande County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.