Alert archive / Wyoming / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 249, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 15, 2026, 5:48 PM MDT for Goshen County, Niobrara County, Platte County, Wyoming. It was in force for 42 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 15, 2026, 5:48 PM MDT (23:48 UTC)
- Expired
- Aug 15, 2026, 6:30 PM MDT
- In force
- 42 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Goshen County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 143 km from the middle of the area, began a volume at 23:51 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 15, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:07 PM MDT | Areal Flood Advisory | CYS | Laramie | 2 hr |
| Aug 14, 7:47 PM MDT | Areal Flood Advisory | CYS | Goshen, Laramie | 101 min |
| Aug 15, 1:12 AM MDT | Flood Watch | CYS | Albany, Goshen, Laramie, Niobrara, Platte | 21 hr |
| Aug 15, 2:50 PM MDT | Special Weather Statement | CYS | Converse | 25 min |
| Aug 15, 3:01 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 32 min |
| Aug 15, 3:07 PM MDT | Special Weather Statement | CYS | Albany | 23 min |
| Aug 15, 3:23 PM MDT | Special Weather Statement | CYS | Albany | 37 min |
| Aug 15, 3:28 PM MDT | Special Weather Statement | CYS | Converse | 32 min |
| Aug 15, 3:29 PM MDT | Special Weather Statement | CYS | Platte | 31 min |
| Aug 15, 3:50 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 40 min |
| Aug 15, 3:58 PM MDT | Special Weather Statement | CYS | Converse | 32 min |
| Aug 15, 4:19 PM MDT | Special Weather Statement | CYS | Converse | 26 min |
| Aug 15, 4:26 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 28 min |
| Aug 15, 4:36 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 39 min |
| Aug 15, 4:45 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara, Platte | 45 min |
| Aug 15, 5:05 PM MDT | Special Weather Statement | CYS | Niobrara | 25 min |
| Aug 14, 6:27 PM MDT | Areal Flood Advisory | CYS | Cheyenne, Morrill | 2 hr |
| Aug 15, 2:22 PM MDT | Areal Flood Advisory | CYS | Sioux | 113 min |
| Aug 15, 2:42 PM MDT | Special Weather Statement | CYS | Dawes | 33 min |
| Aug 15, 2:47 PM MDT | Flash Flood Warning | CYS | Dawes, Sioux | 58 min |
| Aug 15, 3:16 PM MDT | Special Weather Statement | CYS | Dawes | 29 min |
| Aug 15, 3:37 PM MDT | Special Weather Statement | CYS | Dawes | 38 min |
| Aug 15, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 50 min |
| Aug 15, 4:05 PM MDT | Flash Flood Warning | CYS | Kimball | 3 hr |
| Aug 15, 4:07 PM MDT | Special Weather Statement | CYS | Box Butte | 23 min |
| Aug 15, 4:18 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 42 min |
| Aug 15, 4:55 PM MDT | Special Weather Statement | CYS | Box Butte | 35 min |
| Aug 15, 5:08 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 36 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.