Alert archive / Colorado / Severe Thunderstorm Warnings / 2009
Severe Thunderstorm Warnings in Colorado, August 2009
157 severe thunderstorm warnings in August 2009. 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 August 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 157
- Busiest day
- August 18, 200938 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 |
|---|---|---|---|---|
| Jul 31, 6:24 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Prowers | 66 min |
| Aug 1, 6:16 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 29 min |
| Aug 3, 3:08 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 52 min |
| Aug 3, 3:20 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 1 more | 31 min |
| Aug 3, 3:43 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Elbert | 62 min |
| Aug 3, 4:19 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 56 min |
| Aug 3, 5:06 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 33 min |
| Aug 5, 2:49 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 43 min |
| Aug 5, 3:35 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas | 55 min |
| Aug 5, 4:18 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 37 min |
| Aug 5, 5:06 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Pueblo | 23 min |
| Aug 5, 5:22 PM MDT | Severe Thunderstorm Warning | BOU | Park | 23 min |
| Aug 5, 5:22 PM MDT | Severe Thunderstorm Warning | PUB | Custer, Huerfano, Pueblo | 53 min |
| Aug 5, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Park | 48 min |
| Aug 5, 6:13 PM MDT | Severe Thunderstorm Warning | PUB | Fremont, Pueblo | 62 min |
| Aug 5, 6:48 PM MDT | Severe Thunderstorm Warning | PUB | Custer, Fremont, Pueblo | 36 min |
| Aug 5, 7:02 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 58 min |
| Aug 5, 9:19 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Boulder, Broomfield, Jefferson, Weld | 26 min |
| Aug 5, 10:42 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa | 63 min |
| Aug 5, 11:44 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas, Prowers | 61 min |
| Aug 6, 3:37 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 38 min |
| Aug 6, 6:48 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 42 min |
| Aug 6, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 54 min |
| Aug 6, 7:28 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 62 min |
| Aug 8, 7:39 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 36 min |
| Aug 8, 8:10 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 35 min |
| Aug 8, 8:45 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 45 min |
| Aug 8, 8:49 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 26 min |
| Aug 8, 9:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 30 min |
| Aug 8, 9:48 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 42 min |
| Aug 8, 10:52 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 38 min |
| Aug 8, 11:14 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 46 min |
| Aug 9, 12:01 AM MDT | Severe Thunderstorm Warning | BOU | Weld | 29 min |
| Aug 9, 12:05 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 25 min |
| Aug 9, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 51 min |
| Aug 9, 6:13 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 77 min |
| Aug 9, 6:14 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips | 46 min |
| Aug 9, 6:59 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 31 min |
| Aug 9, 8:56 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 31 min |
| Aug 9, 10:57 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 33 min |
| Aug 9, 11:29 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 46 min |
| Aug 10, 12:47 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 28 min |
| Aug 10, 12:52 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Aug 10, 12:59 AM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Aug 10, 1:17 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 43 min |
| Aug 10, 1:17 AM MDT | Severe Thunderstorm Warning | GLD | Yuma | 58 min |
| Aug 10, 1:25 AM MDT | Severe Thunderstorm Warning | BOU | Elbert | 35 min |
| Aug 10, 1:44 AM MDT | Severe Thunderstorm Warning | BOU | Elbert | 46 min |
| Aug 10, 1:45 AM MDT | Severe Thunderstorm Warning | GLD | Yuma | 60 min |
| Aug 10, 1:58 AM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 32 min |
| Aug 10, 2:45 AM MDT | Severe Thunderstorm Warning | BOU | Elbert | 45 min |
| Aug 10, 3:03 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 42 min |
| Aug 10, 4:34 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 41 min |
| Aug 10, 4:37 AM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 53 min |
| Aug 10, 4:47 AM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 43 min |
| Aug 10, 4:21 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 54 min |
| Aug 10, 4:49 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 63 min |
| Aug 10, 6:04 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 37 min |
| Aug 10, 6:54 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 66 min |
| Aug 10, 6:57 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 26 min |
| Aug 10, 7:27 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 63 min |
| Aug 10, 7:56 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 42 min |
| Aug 10, 7:56 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 64 min |
| Aug 10, 8:00 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 60 min |
| Aug 10, 8:11 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 26 min |
| Aug 10, 8:45 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 min |
| Aug 10, 8:58 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, El Paso, Pueblo | 47 min |
| Aug 10, 8:59 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 26 min |
| Aug 10, 11:31 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Pueblo | 59 min |
| Aug 11, 12:51 AM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero, Pueblo | 54 min |
| Aug 11, 1:08 AM MDT | Severe Thunderstorm Warning | PUB | Baca | 97 min |
| Aug 11, 1:43 AM MDT | Severe Thunderstorm Warning | PUB | Las Animas, Otero, Pueblo | 92 min |
| Aug 12, 3:56 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Kiowa | 47 min |
| Aug 12, 6:03 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Prowers | 57 min |
| Aug 12, 6:14 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Prowers | 91 min |
| Aug 12, 6:53 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 67 min |
| Aug 13, 3:32 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 43 min |
| Aug 13, 4:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 40 min |
| Aug 14, 2:20 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 55 min |
| Aug 15, 11:51 AM MDT | Severe Thunderstorm Warning | GJT | Moffat, Routt | 39 min |
| Aug 15, 12:44 PM MDT | Severe Thunderstorm Warning | GJT | Routt | 46 min |
| Aug 15, 2:01 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 44 min |
| Aug 15, 5:21 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 54 min |
| Aug 15, 6:11 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 64 min |
| Aug 15, 7:05 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 25 min |
| Aug 17, 1:09 AM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 66 min |
| Aug 17, 3:21 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 39 min |
| Aug 17, 3:24 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 66 min |
| Aug 17, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 50 min |
| Aug 17, 4:34 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 41 min |
| Aug 17, 4:36 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 39 min |
| Aug 17, 4:44 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Aug 17, 5:07 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 53 min |
| Aug 17, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 33 min |
| Aug 17, 5:22 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 53 min |
| Aug 17, 5:42 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 48 min |
| Aug 17, 5:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 51 min |
| Aug 17, 5:59 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 35 min |
| Aug 17, 6:03 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 27 min |
| Aug 17, 6:07 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 38 min |
| Aug 17, 6:23 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 67 min |
| Aug 17, 6:27 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 48 min |
| Aug 17, 6:32 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 43 min |
| Aug 17, 6:46 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 29 min |
| Aug 17, 7:14 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 46 min |
| Aug 17, 7:39 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 51 min |
| Aug 17, 7:45 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 45 min |
| Aug 17, 7:55 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 27 min |
| Aug 17, 8:19 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 56 min |
| Aug 17, 8:30 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 31 min |
| Aug 17, 9:14 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Aug 17, 9:15 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 29 min |
| Aug 17, 9:27 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 48 min |
| Aug 17, 9:32 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 40 min |
| Aug 17, 9:45 PM MDT | Severe Thunderstorm Warning | PUB | Fremont, Teller | 60 min |
| Aug 17, 10:00 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 30 min |
| Aug 17, 10:21 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 29 min |
| Aug 17, 10:35 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 55 min |
| Aug 17, 11:33 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 57 min |
| Aug 18, 2:06 AM MDT | Severe Thunderstorm Warning | PUB | Crowley, Kiowa | 45 min |
| Aug 18, 2:07 AM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 53 min |
| Aug 18, 12:39 PM MDT | Severe Thunderstorm Warning | BOU | Denver, Jefferson | 36 min |
| Aug 18, 12:45 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas, Pueblo | 60 min |
| Aug 18, 1:10 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas, Jefferson | 22 min |
| Aug 18, 1:39 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas, Otero, Pueblo | 66 min |
| Aug 18, 2:16 PM MDT | Severe Thunderstorm Warning | PUB | Custer, Fremont, Pueblo | 59 min |
| Aug 18, 2:26 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Las Animas | 64 min |
| Aug 18, 2:37 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas, Otero, Pueblo | 53 min |
| Aug 18, 2:44 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 61 min |
| Aug 18, 2:59 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Fremont, Teller | 61 min |
| Aug 18, 3:10 PM MDT | Severe Thunderstorm Warning | PUB | Custer, El Paso, Fremont, Pueblo | 95 min |
| Aug 18, 3:29 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas, Otero, Prowers, Pueblo | 91 min |
| Aug 18, 4:02 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 43 min |
| Aug 18, 4:32 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 58 min |
| Aug 18, 4:36 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero, Pueblo | 84 min |
| Aug 18, 5:34 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas | 34 min |
| Aug 18, 6:05 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 40 min |
| Aug 18, 6:28 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Las Animas, Otero | 62 min |
| Aug 18, 6:45 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Prowers | 47 min |
| Aug 18, 7:19 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Las Animas | 31 min |
| Aug 18, 7:29 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas, Prowers | 40 min |
| Aug 23, 6:55 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 32 min |
| Aug 24, 3:52 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 53 min |
| Aug 24, 4:43 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 49 min |
| Aug 26, 5:15 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 42 min |
| Aug 26, 5:21 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Sedgwick | 42 min |
| Aug 26, 5:42 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Crowley, Kiowa, Otero, Prowers | 63 min |
| Aug 26, 5:59 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 61 min |
| Aug 26, 6:56 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 64 min |
| Aug 26, 7:51 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 54 min |
| Aug 26, 9:13 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 27 min |
| Aug 29, 3:40 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 46 min |
| Aug 29, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 34 min |
| Aug 29, 6:37 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 53 min |
| Aug 30, 5:01 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 33 min |
| Aug 30, 5:02 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 58 min |
| Aug 31, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 33 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- El Paso County21
- Las Animas County19
- Arapahoe County19
- Elbert County18
- Pueblo County16
- Logan County16
- Yuma County14
- Adams County12
- Weld County12
- Lincoln County11
- Baca County10
- Washington County10
- Bent County9
- Prowers County8
- Kit Carson County8
- Otero County8
- Crowley County7
- Huerfano County6
- Fremont County6
- Denver County5
- Douglas County5
- Jefferson County4
- Custer County4
- Kiowa County4
- Phillips County4
- Sedgwick County4
- Morgan County3
- Boulder County2
- Broomfield County2
- Park County2
- Moffat County2
- Routt County2
- Teller County2
- Rio Blanco County1
- Cheyenne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.