Alert archive / Wyoming / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 43, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jun 8, 2018, 5:25 PM MDT for Johnson County, Wyoming. It was in force for 50 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 8, 2018, 5:25 PM MDT (23:25 UTC)
- Expired
- Jun 8, 2018, 6:15 PM MDT
- In force
- 50 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 1.25 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 23:28 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 8, 3:44 PM MDT, 1 hour 41 minutes earlier.
Area forecast discussion, Jun 8, 3:44 PM MDT, 1 hour 41 minutes before
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</html>Hazardous weather outlook, Jun 8, 12:57 AM MDT, 16 hours 28 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 1257 AM MDT Fri Jun 8 2018 WYZ001>020-022>030-091215- 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- 1257 AM MDT Fri Jun 8 2018 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and Tonight Isolated afternoon and evening thunderstorms across northern Wyoming. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Sunday...A strong, but mainly dry cold front will push across Wyoming. Elevated fire behavior will be possible during this time frame. .SPOTTER INFORMATION STATEMENT... Spotters are urged to report wind gusts over 45 mph and hail. Thank you. TEAM RIVERTON
In the hours before
Special weather statement, Jun 8, 2:24 PM MDT, 3 hours 1 minute before
Special Weather Statement National Weather Service Riverton WY 224 PM MDT FRI JUN 8 2018 WYZ006-082100- Southeast Big Horn Basin- 224 PM MDT FRI JUN 8 2018 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASHAKIE COUNTY UNTIL 300 PM MDT... At 223 PM MDT, Doppler radar was tracking a strong thunderstorm 13 miles northwest of Winchester, or 18 miles west of Worland, moving east at 20 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. This strong thunderstorm will be near... Worland, Wyoming Boys School and Worland Municipal Airport around 300 PM MDT. Other locations impacted by this storm include Washakie County Fairgrounds. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4390 10791 4391 10842 4409 10845 4417 10794 TIME...MOT...LOC 2023Z 265DEG 18KT 4401 10834 Baker
Special weather statement, Jun 8, 3:22 PM MDT, 2 hours 3 minutes before
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</html>Special weather statement, Jun 8, 3:34 PM MDT, 1 hour 51 minutes before
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</html>Special weather statement, Jun 8, 4:04 PM MDT, 1 hour 21 minutes before
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</html>Special weather statement, Jun 8, 4:49 PM MDT, 36 minutes before
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</html>Special weather statement, Jun 8, 5:06 PM MDT, 19 minutes before
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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 7, 6:02 PM MDT | Special Weather Statement | RIW | Johnson | 28 min |
| Jun 7, 6:06 PM MDT | Special Weather Statement | RIW | Johnson | 39 min |
| Jun 7, 6:33 PM MDT | Special Weather Statement | RIW | Johnson | 27 min |
| Jun 7, 6:38 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 52 min |
| Jun 7, 6:51 PM MDT | Special Weather Statement | RIW | Johnson | 39 min |
| Jun 7, 7:17 PM MDT | Special Weather Statement | RIW | Johnson | 28 min |
| Jun 8, 2:24 PM MDT | Special Weather Statement | RIW | Hot Springs | 36 min |
| Jun 8, 2:37 PM MDT | Tornado Warning | RIW | Hot Springs, Washakie | 23 min |
| Jun 8, 3:00 PM MDT | Severe Thunderstorm Warning | RIW | Washakie | 30 min |
| Jun 8, 3:22 PM MDT | Special Weather Statement | RIW | Park | 38 min |
| Jun 8, 3:34 PM MDT | Special Weather Statement | RIW | Washakie | 26 min |
| Jun 8, 4:04 PM MDT | Special Weather Statement | RIW | 26 min | |
| Jun 8, 4:49 PM MDT | Special Weather Statement | RIW | Big Horn | 26 min |
| Jun 8, 5:06 PM MDT | Special Weather Statement | RIW | Johnson | 39 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2018Every severe thunderstorm warning in 2018
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.