Alert archive / Wyoming / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 28, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jun 16, 2025, 7:33 PM MDT for Natrona County, Wyoming. It was in force for 27 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 16, 2025, 7:33 PM MDT (01:33 UTC)
- Expired
- Jun 16, 2025, 8:00 PM MDT
- In force
- 27 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 1.25 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 01:33 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 16, 4:32 PM MDT, 3 hours 1 minute earlier.
Area forecast discussion, Jun 16, 4:32 PM MDT, 3 hours 1 minute before
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</html>Hazardous weather outlook, Jun 16, 11:34 AM MDT, 7 hours 59 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 1134 AM MDT Mon Jun 16 2025 WYZ001>020-022>030-171300- 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- 1134 AM MDT Mon Jun 16 2025 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...This Afternoon and Tonight. Scattered thunderstorms, some possibly strong to severe, occur between 2 PM and 8 PM. The greatest potential for strong outflow wind and hail is in and around the Bighorn Basin and Johnson County. Low relative humidity and a breezy westerly wind will create elevated to critical fire weather conditions across southern Wyoming. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Tuesday...Isolated to scattered thunderstorms, mainly along and east of the Continental Divide during the afternoon. Thursday through Saturday...Gusty westerly wind, low relative humidity, and temperatures 10 to 15 degrees above normal combine to generate elevated to critical fire weather conditions across southern Wyoming. Much above normal temperatures across the entire region each day. .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 16, 4:48 PM MDT, 2 hours 45 minutes before
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</html>Local storm report, Jun 16, 4:53 PM MDT, 2 hours 40 minutes before
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</html>Local storm report, Jun 16, 5:05 PM MDT, 2 hours 28 minutes before
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</html>Special weather statement, Jun 16, 5:08 PM MDT, 2 hours 25 minutes before
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</html>Special weather statement, Jun 16, 5:26 PM MDT, 2 hours 7 minutes before
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</html>Special weather statement, Jun 16, 5:46 PM MDT, 1 hour 47 minutes before
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<div class="status" id="status">Temporary Notice</div>
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</html>The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:06 PM MDT | Special Weather Statement | RIW | Natrona | 39 min |
| Jun 16, 7:25 PM MDT | Special Weather Statement | RIW | Natrona | 35 min |
| Jun 16, 7:32 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 43 min |
| Jun 16, 7:41 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 34 min |
| Jun 16, 7:58 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 47 min |
| Jun 16, 8:07 PM MDT | Special Weather Statement | RIW | Natrona | 23 min |
| Jun 16, 8:09 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 36 min |
| Jun 16, 8:22 PM MDT | Special Weather Statement | RIW | Natrona | 38 min |
| Jun 16, 8:37 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 38 min |
| Jun 17, 1:24 PM MDT | Special Weather Statement | RIW | Fremont | 36 min |
| Jun 17, 1:33 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 27 min |
| Jun 17, 1:56 PM MDT | Special Weather Statement | RIW | Fremont | 34 min |
| Jun 17, 2:00 PM MDT | Special Weather Statement | RIW | Natrona | 30 min |
| Jun 17, 2:09 PM MDT | Special Weather Statement | RIW | Fremont | 36 min |
| Jun 17, 2:19 PM MDT | Special Weather Statement | RIW | 26 min | |
| Jun 17, 2:33 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 27 min |
| Jun 17, 2:53 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 19 min |
| Jun 17, 2:54 PM MDT | Special Weather Statement | RIW | Natrona | 36 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.