Alert archive / Wyoming / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 233, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 12, 2026, 3:31 PM MDT for Niobrara County, Wyoming. It was in force for 14 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
- Aug 12, 2026, 3:31 PM MDT (21:31 UTC)
- Expired
- Aug 12, 2026, 3:45 PM MDT
- In force
- 14 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Niobrara County, WY
The radar
The Rapid City radar (KUDX), 178 km from the middle of the area, began a volume at 21:33 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 12, 2:32 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 1:50 PM MDT | Special Weather Statement | CYS | Laramie | 25 min |
| Aug 12, 1:57 PM MDT | Special Weather Statement | CYS | Laramie | 48 min |
| Aug 12, 2:00 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 45 min |
| Aug 12, 2:47 PM MDT | Special Weather Statement | CYS | Laramie | 28 min |
| Aug 12, 3:18 PM MDT | Special Weather Statement | CYS | Niobrara | 12 min |
| Aug 12, 4:15 PM MDT | Special Weather Statement | CYS | Kimball | 30 min |
| Aug 12, 4:22 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 38 min |
| Aug 12, 4:54 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 66 min |
| Aug 12, 5:03 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 15 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 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.