Alert archive / Colorado / Severe Thunderstorm Warnings / 2019
Severe Thunderstorm Warnings in Colorado, September 2019
44 severe thunderstorm warnings in September 2019. 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 September 2019. Tap one for its archive.
- Severe Thunderstorm Warnings
- 44
- Busiest day
- September 11, 201910 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 |
|---|---|---|---|---|
| Aug 31, 6:10 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 20 min |
| Sep 3, 7:17 PM MDT | Severe Thunderstorm Warning | BOU | Park | 13 min |
| Sep 5, 9:18 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 27 min |
| Sep 5, 9:41 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 34 min |
| Sep 6, 2:02 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek, Gilpin, Jefferson | 43 min |
| Sep 6, 2:44 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Jefferson | 46 min |
| Sep 6, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas, Jefferson | 34 min |
| Sep 6, 3:59 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas | 46 min |
| Sep 6, 4:51 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 39 min |
| Sep 8, 2:33 PM MDT | Severe Thunderstorm Warning | GJT | Eagle, Garfield, Routt | 27 min |
| Sep 8, 3:18 PM MDT | Severe Thunderstorm Warning | BOU | Grand, Jackson | 42 min |
| Sep 8, 4:03 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco | 27 min |
| Sep 8, 5:32 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 28 min |
| Sep 8, 5:58 PM MDT | Severe Thunderstorm Warning | GJT | Garfield | 32 min |
| Sep 8, 6:05 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Weld | 40 min |
| Sep 8, 6:11 PM MDT | Severe Thunderstorm Warning | GJT | Moffat, Rio Blanco, Routt | 34 min |
| Sep 8, 6:23 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Otero, Prowers | 37 min |
| Sep 8, 6:34 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Morgan, Washington, Weld | 41 min |
| Sep 10, 2:40 AM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 35 min |
| Sep 10, 3:11 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 34 min |
| Sep 10, 3:44 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 31 min |
| Sep 10, 4:20 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 25 min |
| Sep 10, 12:50 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 40 min |
| Sep 10, 5:40 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 50 min |
| Sep 10, 6:20 PM MDT | Severe Thunderstorm Warning | GJT | Garfield, Mesa | 25 min |
| Sep 10, 6:24 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 25 min |
| Sep 10, 6:38 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 10 min |
| Sep 11, 4:15 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 45 min |
| Sep 11, 4:29 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 31 min |
| Sep 11, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 47 min |
| Sep 11, 5:21 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 24 min |
| Sep 11, 5:24 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Weld | 36 min |
| Sep 11, 5:44 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 31 min |
| Sep 11, 5:58 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 47 min |
| Sep 11, 6:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Weld | 45 min |
| Sep 11, 6:40 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 50 min |
| Sep 11, 7:01 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 13 min |
| Sep 11, 7:11 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 38 min |
| Sep 11, 7:48 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 27 min |
| Sep 13, 4:47 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 43 min |
| Sep 13, 6:24 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 51 min |
| Sep 19, 3:22 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa, Prowers | 23 min |
| Sep 19, 4:20 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 25 min |
| Sep 19, 4:45 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 17 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Weld County15
- Logan County7
- Arapahoe County5
- Morgan County5
- Garfield County4
- Prowers County4
- Phillips County4
- Jefferson County3
- Mesa County3
- Sedgwick County3
- Larimer County2
- Denver County2
- Douglas County2
- Routt County2
- Moffat County2
- Rio Blanco County2
- Adams County2
- Kiowa County2
- Boulder County2
- Las Animas County2
- Park County1
- Clear Creek County1
- Gilpin County1
- El Paso County1
- Eagle County1
- Grand County1
- Jackson County1
- Bent County1
- Otero County1
- Washington County1
- Cheyenne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.