Alert archive / Colorado / Severe Thunderstorm Warnings / 2011
Severe Thunderstorm Warnings in Colorado, July 2011
166 severe thunderstorm warnings in July 2011. 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 July 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 166
- Busiest day
- July 14, 201121 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 |
|---|---|---|---|---|
| Jun 30, 6:04 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Gilpin | 27 min |
| Jun 30, 10:10 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Douglas, Elbert | 16 min |
| Jul 2, 12:17 AM MDT | Severe Thunderstorm Warning | BOU | Larimer | 43 min |
| Jul 2, 1:23 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 52 min |
| Jul 2, 12:26 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 64 min |
| Jul 2, 1:24 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 66 min |
| Jul 2, 1:49 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 56 min |
| Jul 2, 3:52 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 38 min |
| Jul 2, 4:41 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 64 min |
| Jul 2, 4:45 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 30 min |
| Jul 2, 5:16 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 59 min |
| Jul 2, 5:31 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 44 min |
| Jul 2, 5:42 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 48 min |
| Jul 2, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 62 min |
| Jul 2, 6:04 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 36 min |
| Jul 2, 6:10 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 65 min |
| Jul 2, 6:13 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 32 min |
| Jul 2, 6:16 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 29 min |
| Jul 2, 6:38 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 37 min |
| Jul 2, 7:03 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 23 min |
| Jul 3, 6:49 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 31 min |
| Jul 5, 7:47 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 43 min |
| Jul 5, 7:49 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 56 min |
| Jul 5, 8:41 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 49 min |
| Jul 6, 1:09 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 17 min |
| Jul 6, 2:58 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 48 min |
| Jul 6, 3:28 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 47 min |
| Jul 6, 5:00 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 33 min |
| Jul 6, 5:06 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Logan, Morgan, Washington, Weld | 39 min |
| Jul 6, 5:26 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Weld | 49 min |
| Jul 6, 8:49 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Prowers | 56 min |
| Jul 6, 9:43 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa, Prowers | 37 min |
| Jul 7, 2:16 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 34 min |
| Jul 7, 2:17 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas | 25 min |
| Jul 7, 2:49 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano | 56 min |
| Jul 7, 2:54 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 51 min |
| Jul 7, 4:08 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Boulder, Broomfield, Jefferson | 46 min |
| Jul 7, 5:08 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 52 min |
| Jul 7, 5:13 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 62 min |
| Jul 7, 6:07 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Las Animas, Otero | 38 min |
| Jul 8, 1:21 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Broomfield, Denver, Jefferson | 39 min |
| Jul 8, 1:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 44 min |
| Jul 8, 2:07 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 34 min |
| Jul 8, 3:11 PM MDT | Severe Thunderstorm Warning | GJT | Eagle, Garfield | 49 min |
| Jul 8, 4:11 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 49 min |
| Jul 8, 4:31 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 59 min |
| Jul 8, 4:39 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 24 min |
| Jul 8, 4:42 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, El Paso, Pueblo | 48 min |
| Jul 8, 4:57 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 16 min |
| Jul 8, 4:57 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Prowers | 31 min |
| Jul 8, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 21 min |
| Jul 8, 5:57 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 33 min |
| Jul 8, 6:04 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 56 min |
| Jul 8, 6:10 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 31 min |
| Jul 8, 6:19 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 26 min |
| Jul 8, 6:24 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 43 min |
| Jul 8, 6:42 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 33 min |
| Jul 8, 7:04 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Broomfield, Denver, Jefferson | 45 min |
| Jul 8, 7:13 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 47 min |
| Jul 8, 7:41 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 49 min |
| Jul 8, 8:03 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 42 min |
| Jul 8, 8:11 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 34 min |
| Jul 8, 10:01 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 30 min |
| Jul 9, 3:02 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas, Prowers | 43 min |
| Jul 9, 3:42 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 63 min |
| Jul 9, 3:45 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Prowers | 60 min |
| Jul 9, 3:57 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Prowers | 63 min |
| Jul 9, 4:37 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 53 min |
| Jul 9, 4:48 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 57 min |
| Jul 9, 5:34 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 56 min |
| Jul 9, 6:22 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 68 min |
| Jul 9, 6:34 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 56 min |
| Jul 9, 6:46 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 59 min |
| Jul 9, 8:14 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 61 min |
| Jul 9, 9:42 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 32 min |
| Jul 10, 2:04 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Pueblo | 56 min |
| Jul 10, 2:12 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Boulder, Broomfield, Denver, Jefferson, Weld | 48 min |
| Jul 10, 3:28 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 51 min |
| Jul 10, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln | 53 min |
| Jul 10, 5:29 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 54 min |
| Jul 10, 5:41 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 64 min |
| Jul 10, 6:12 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 34 min |
| Jul 10, 7:38 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 38 min |
| Jul 11, 1:52 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 50 min |
| Jul 11, 2:50 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 38 min |
| Jul 11, 5:49 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 22 min |
| Jul 11, 6:34 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Weld | 29 min |
| Jul 12, 4:25 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 45 min |
| Jul 12, 6:39 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 51 min |
| Jul 12, 7:23 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 52 min |
| Jul 12, 8:05 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 40 min |
| Jul 12, 8:05 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 55 min |
| Jul 12, 8:21 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 54 min |
| Jul 12, 9:00 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 60 min |
| Jul 12, 9:04 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 56 min |
| Jul 12, 9:30 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 44 min |
| Jul 12, 9:59 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 61 min |
| Jul 13, 1:04 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 56 min |
| Jul 13, 2:22 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 38 min |
| Jul 13, 2:58 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 38 min |
| Jul 13, 3:24 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 51 min |
| Jul 13, 3:52 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 38 min |
| Jul 13, 4:12 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 48 min |
| Jul 13, 4:22 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 16 min |
| Jul 13, 5:56 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Douglas, Jefferson | 49 min |
| Jul 13, 6:08 PM MDT | Severe Thunderstorm Warning | PUB | Fremont, Pueblo | 26 min |
| Jul 13, 6:14 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Jul 13, 6:16 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 34 min |
| Jul 13, 6:40 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 19 min |
| Jul 13, 6:50 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 55 min |
| Jul 13, 7:00 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 60 min |
| Jul 13, 7:13 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer | 34 min |
| Jul 13, 7:30 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 45 min |
| Jul 13, 7:34 PM MDT | Severe Thunderstorm Warning | BOU | Larimer | 26 min |
| Jul 13, 7:38 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 67 min |
| Jul 13, 7:59 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 28 min |
| Jul 13, 8:09 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas, Pueblo | 22 min |
| Jul 13, 8:40 PM MDT | Severe Thunderstorm Warning | GJT | Rio Blanco | 50 min |
| Jul 13, 9:01 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 44 min |
| Jul 13, 9:05 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 55 min |
| Jul 13, 9:55 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 33 min |
| Jul 13, 10:30 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 32 min |
| Jul 14, 1:57 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 48 min |
| Jul 14, 2:40 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas | 50 min |
| Jul 14, 3:28 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 47 min |
| Jul 14, 4:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 22 min |
| Jul 14, 7:53 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 67 min |
| Jul 15, 5:33 PM MDT | Severe Thunderstorm Warning | PUB | Otero | 57 min |
| Jul 15, 9:40 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 50 min |
| Jul 15, 10:07 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 38 min |
| Jul 15, 10:45 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 45 min |
| Jul 16, 9:37 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 35 min |
| Jul 17, 2:25 PM MDT | Severe Thunderstorm Warning | BOU | Gilpin | 35 min |
| Jul 18, 8:30 PM MDT | Severe Thunderstorm Warning | GJT | Montezuma | 45 min |
| Jul 18, 9:12 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 48 min |
| Jul 18, 9:58 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 47 min |
| Jul 19, 4:51 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 35 min |
| Jul 19, 5:03 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Routt | 42 min |
| Jul 19, 5:11 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 49 min |
| Jul 19, 5:44 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Routt | 46 min |
| Jul 21, 3:49 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Las Animas, Otero | 26 min |
| Jul 21, 5:16 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Otero, Prowers | 59 min |
| Jul 21, 5:58 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Prowers | 26 min |
| Jul 21, 7:34 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 56 min |
| Jul 22, 5:41 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 24 min |
| Jul 23, 6:28 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 24 min |
| Jul 24, 2:33 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 42 min |
| Jul 24, 3:00 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 45 min |
| Jul 24, 3:48 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 27 min |
| Jul 24, 4:31 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Washington | 21 min |
| Jul 24, 4:47 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 28 min |
| Jul 24, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 62 min |
| Jul 24, 6:52 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 38 min |
| Jul 24, 7:25 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 50 min |
| Jul 24, 8:07 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 45 min |
| Jul 26, 5:53 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver | 37 min |
| Jul 27, 7:10 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 41 min |
| Jul 28, 4:19 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 56 min |
| Jul 28, 4:27 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 34 min |
| Jul 28, 4:57 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 24 min |
| Jul 28, 5:40 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 34 min |
| Jul 28, 5:53 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 67 min |
| Jul 28, 6:10 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 21 min |
| Jul 28, 6:22 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 68 min |
| Jul 28, 6:46 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Prowers | 59 min |
| Jul 28, 7:13 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa, Prowers | 62 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Elbert County22
- Weld County22
- Adams County21
- Kit Carson County20
- Yuma County19
- Arapahoe County18
- Denver County14
- El Paso County13
- Cheyenne County12
- Las Animas County10
- Prowers County10
- Washington County9
- Douglas County8
- Bent County8
- Larimer County7
- Lincoln County7
- Jefferson County7
- Pueblo County7
- Moffat County7
- Logan County6
- Kiowa County6
- Rio Blanco County6
- Morgan County5
- Boulder County4
- Broomfield County4
- Otero County4
- Phillips County4
- Baca County4
- Huerfano County3
- Gilpin County2
- Sedgwick County2
- Routt County2
- Teller County1
- Eagle County1
- Garfield County1
- Crowley County1
- Fremont County1
- Montezuma County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.