Alert archive / Wyoming / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 43, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Aug 3, 2020, 3:51 PM MDT for Johnson County, Wyoming. It was in force for 39 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
- Aug 3, 2020, 3:51 PM MDT (21:51 UTC)
- Expired
- Aug 3, 2020, 4:30 PM MDT
- In force
- 39 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Johnson County, WY
The radar
The Riverton/Lander radar (KRIW), 187 km from the middle of the area, began a volume at 21:51 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 Aug 3, 1:19 PM MDT, 2 hours 32 minutes earlier.
Area forecast discussion, Aug 3, 1:19 PM MDT, 2 hours 32 minutes before
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</html>Hazardous weather outlook, Aug 3, 3:30 AM MDT, 12 hours 21 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 330 AM MDT Mon Aug 3 2020 WYZ001>020-022>030-041200- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn 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- 330 AM MDT Mon Aug 3 2020 ...Red Flag Warning for Southwest Wyoming this afternoon through early Tuesday evening... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and Tonight. Isolated to widely scattered thunderstorms in the afternoon through late evening over the north and central. Mostly dry in the south and southwest with areas of critical fire weather conditions this afternoon into the evening hours. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Tuesday...Isolated to widely scattered thunderstorms in the afternoon and evening. Critical fire weather conditions are expected in parts of southwest Wyoming in the afternoon into the early evening. Wednesday through Friday...Isolated thunderstorms. Elevated fire concerns Thursday and Friday in the central and south. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions, according to standard operating procedures.
In the hours before
Special weather statement, Aug 3, 2:05 PM MDT, 1 hour 46 minutes before
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</html>Special weather statement, Aug 3, 2:27 PM MDT, 1 hour 24 minutes before
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</html>Special weather statement, Aug 3, 3:20 PM MDT, 31 minutes before
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</html>Special weather statement, Aug 3, 3:22 PM MDT, 29 minutes before
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<p id="message1">
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Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Special weather statement, Aug 3, 3:44 PM MDT, 7 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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Please try again in a few minutes.
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</html>Special weather statement, Aug 3, 3:46 PM MDT, 5 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 |
|---|---|---|---|---|
| Aug 3, 3:30 AM MDT | Red Flag Warning | RIW | Lincoln, Sublette, Sweetwater, Uinta | 41 hr |
| Aug 3, 11:18 AM MDT | Special Weather Statement | RIW | Hot Springs | 27 min |
| Aug 3, 1:37 PM MDT | Special Weather Statement | RIW | Washakie | 23 min |
| Aug 3, 2:05 PM MDT | Special Weather Statement | RIW | Washakie | 25 min |
| Aug 3, 2:27 PM MDT | Special Weather Statement | RIW | Natrona | 33 min |
| Aug 3, 3:20 PM MDT | Special Weather Statement | RIW | Johnson | 25 min |
| Aug 3, 3:22 PM MDT | Special Weather Statement | RIW | Johnson | 23 min |
| Aug 3, 3:44 PM MDT | Special Weather Statement | RIW | Johnson | 31 min |
| Aug 3, 3:46 PM MDT | Special Weather Statement | RIW | Johnson | 29 min |
| Aug 3, 4:11 PM MDT | Special Weather Statement | RIW | Natrona | 34 min |
| Aug 3, 4:27 PM MDT | Special Weather Statement | RIW | Johnson | 33 min |
| Aug 3, 4:46 PM MDT | Special Weather Statement | RIW | Natrona | 29 min |
| Aug 3, 5:20 PM MDT | Special Weather Statement | RIW | Hot Springs | 25 min |
| Aug 3, 5:47 PM MDT | Special Weather Statement | RIW | Hot Springs | 28 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2020Every severe thunderstorm warning in 2020
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.