Alert archive / Colorado / Denver County / 2026
Weather alerts in Denver County, Colorado, September 2026
16 weather alerts in September 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 16
- Warnings
- 1
- Watches
- 1
- Advisories
- 2
- Busiest day
- September 23, 20264 alerts
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 | Lasted |
|---|---|---|---|
| Sep 6, 4:50 PM MDT | Special Weather Statement | BOU | 40 min |
| Sep 6, 5:42 PM MDT | Special Weather Statement | BOU | 48 min |
| Sep 18, 4:31 PM MDT | Special Weather Statement | BOU | 44 min |
| Sep 19, 5:55 PM MDT | Severe Thunderstorm Warning | BOU | 29 min |
| Sep 20, 8:01 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Sep 20, 9:01 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 20, 10:52 PM MDT | Mesoscale Discussion | SPC | 83 min |
| Sep 22, 6:12 PM MDT | Special Weather Statement | BOU | 33 min |
| Sep 22, 6:24 PM MDT | Special Weather Statement | BOU | 36 min |
| Sep 22, 7:00 PM MDT | Special Weather Statement | BOU | 45 min |
| Sep 22, 8:33 PM MDT | Special Weather Statement | BOU | 42 min |
| Sep 25, 3:33 PM MDT | Special Weather Statement | BOU | 42 min |
| Sep 25, 4:14 PM MDT | Special Weather Statement | BOU | 31 min |
| Sep 25, 4:29 PM MDT | Areal Flood Advisory | BOU | 2 hr |
| Sep 25, 5:07 PM MDT | Areal Flood Advisory | BOU | 113 min |
| Sep 27, 6:43 PM MDT | Special Weather Statement | BOU | 47 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 10 |
| Flooding | |
| Areal Flood Advisory | 2 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.