Alert archive / Wyoming / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 37, NWS Riverton, WY

June 24, 2025Natrona County, Wyoming

NWS Riverton, WY issued this severe thunderstorm warning at Jun 24, 2025, 5:23 PM MDT for Natrona County, Wyoming. It was in force for 38 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
Jun 24, 2025, 5:23 PM MDT (23:23 UTC)
Expired
Jun 24, 2025, 6:01 PM MDT
In force
38 min
Issued by
NWS Riverton, WY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Natrona County, WY

The radar

The Riverton/Lander radar (KRIW), 137 km from the middle of the area, began a volume at 23:23 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 severe thunderstorm 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 severe thunderstorm warning went out at Jun 24, 1:09 PM MDT, 4 hours 14 minutes earlier.

Area forecast discussion, Jun 24, 1:09 PM MDT, 4 hours 14 minutes before
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Hazardous weather outlook, Jun 24, 3:21 AM MDT, 14 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Riverton WY
321 AM MDT Tue Jun 24 2025

WYZ001>020-022>030-251300-
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-
321 AM MDT Tue Jun 24 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

A chance of afternoon and evening thunderstorms in the northern two
thirds of the area. Some storms could become severe this afternoon
and evening, with the most likely location of severe storms in
Natrona and Johnson Counties. Large hail will be the main threat but
damaging wind and isolated tornadoes are also possible.

Elevated to critical fire weather is likely this afternoon in
Sweetwater County this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...Another chance of thunderstorms in central Wyoming.

Friday...Elevated fire weather possible in the afternoon.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jun 24, 4:33 PM MDT, 50 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:33 PM MDTSpecial Weather StatementRIWNatrona27 min
Jun 24, 4:56 PM MDTSevere Thunderstorm WarningRIWNatrona49 min
Jun 24, 5:55 PM MDTSpecial Weather StatementRIWNatrona35 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2025Every severe thunderstorm 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.