Alert archive / Wyoming / High Wind Warnings in 2025

High Wind Warning 14, NWS Riverton, WY

December 15, 202511 counties in Wyoming

NWS Riverton, WY issued this high wind warning at Dec 15, 2025, 1:19 PM MST for 11 counties in Wyoming. It took effect at Dec 16, 2025, 1:00 AM MST. It was in force for 52 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
Dec 15, 2025, 1:19 PM MST (20:19 UTC)
In effect from
Dec 16, 2025, 1:00 AM MST
Expired
Dec 18, 2025, 5:00 AM MST
In force
52 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, Sweetwater County, WY, Teton County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 41 km from the middle of the area, began a volume at 20:26 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 high wind 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 high wind warning went out at Dec 15, 10:58 AM MST, 2 hours 21 minutes earlier.

Area forecast discussion, Dec 15, 10:58 AM MST, 2 hours 21 minutes before
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Hazardous weather outlook, Dec 15, 2:07 AM MST, 11 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Riverton WY
207 AM MST Mon Dec 15 2025

WYZ001>020-022>030-161315-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
207 AM MST Mon Dec 15 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

Dry conditions and above normal temperatures return today. Gusty
winds will be mainly confined to the Wind Corridor and the east
slopes of the Absaroka, Bighorn and Wind River Mountains.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...A few inches of snow will occur over the higher elevations
in the western mountains tonight into Tuesday night. Rain to a
rain/snow mix will occur in the Jackson and Star Valleys during the
day and into the evening.

Tuesday night to Wednesday night...Snow spreading into the western
mountains. Strong to high wind likely across much of the area.

Thursday night and Friday...Another chance for snow in the west
and strong to high wind east of the Divide.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 15, 12:58 PM MSTWinter Storm WatchRIWFremont, Hot Springs, Lincoln, Park, Sublette, Teton23 hr
Dec 15, 1:19 PM MSTHigh Wind WatchRIWFremont, Johnson, Lincoln, Natrona, Sublette, Sweetwater22 hr

Nearby

High Wind Warnings in Wyoming, 2025Every high wind 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.