Alert archive / Colorado / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 392, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Sep 18, 2026, 4:47 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 18, 2026, 4:47 PM MDT (22:47 UTC)
- Expired
- Sep 18, 2026, 5:15 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 60.0 mph
Counties Adams County, CO, Arapahoe County, CO
The radar
The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 22:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 3:11 PM MDT | Special Weather Statement | BOU | Elbert | 34 min |
| Sep 18, 3:41 PM MDT | Special Weather Statement | BOU | Washington | 34 min |
| Sep 18, 4:22 PM MDT | Special Weather Statement | BOU | Washington | 38 min |
| Sep 18, 4:31 PM MDT | Special Weather Statement | BOU | Denver | 44 min |
| Sep 18, 5:05 PM MDT | Special Weather Statement | BOU | Broomfield | 25 min |
| Sep 18, 5:08 PM MDT | Special Weather Statement | BOU | Adams | 37 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.