Alert archive / Wyoming / Winter Storm Warnings in 2025

Winter Storm Warning 9, NWS Riverton, WY

March 17, 202510 counties in Wyoming

NWS Riverton, WY issued this winter storm warning at Mar 17, 2025, 2:54 AM MDT for 10 counties in Wyoming. It took effect at Mar 17, 2025, 6:00 AM MDT. It was in force for 41 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: Mar 17, 2025, 2:54 AM MDT (08:54 UTC)
In effect from: Mar 17, 2025, 6:00 AM MDT
Expired: Mar 18, 2025, 11:00 PM MDT
In force: 41 hr
Issued by: NWS Riverton, WY

Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Teton County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 58 km from the middle of the area, began a volume at 08:55 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.

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this winter storm warning went out at Mar 16, 10:30 PM MDT, 4 hours 24 minutes earlier.

Area forecast discussion, Mar 16, 10:30 PM MDT, 4 hours 24 minutes before

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The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 17, 2:54 AM MDT	Winter Weather Advisory	RIW	Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more	51 hr

Nearby

Winter Storm Warnings in Wyoming, 2025 Every winter storm warning in 2025

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.