Alert archive / Wyoming / Winter Storm Warnings in 2026
Winter Storm Warning 4, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Apr 15, 2026, 12:40 AM MDT for 6 counties in Wyoming. It took effect at Apr 15, 2026, 6:00 PM MDT. It was in force for 36 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2026, 12:40 AM MDT (06:40 UTC)
- In effect from
- Apr 15, 2026, 6:00 PM MDT
- Expired
- Apr 17, 2026, 6:00 AM MDT
- In force
- 36 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Lincoln County, WY, Park County, WY, Sublette County, WY, Teton County, WY
The radar
The Riverton/Lander radar (KRIW), 100 km from the middle of the area, began a volume at 06:44 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 Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 11:56 AM MDT | Winter Weather Advisory | RIW | Big Horn, Fremont, Johnson, Natrona, Sweetwater, Washakie | 46 hr |
Nearby
Winter Storm Warnings in Wyoming, 2026Every winter storm 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.