


Hazardous Weather Outlook
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
621 FLUS45 KRIW 031803 HWORIW Hazardous Weather Outlook National Weather Service Riverton WY 1203 PM MDT Wed Sep 3 2025 WYZ001>020-022>030-041300- 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- 1203 PM MDT Wed Sep 3 2025 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...This Afternoon and Tonight. Elevated fire weather possible in southern Wyoming this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday...Strong north wind likely in the northern Bighorn Basin and Johnson County, especially in the afternoon. Gusts 25 to 40 mph will be common with gusts nearing 50 mph in exposed areas. Saturday and Sunday...The chances for thunderstorms begin to increase, spreading from west to east over the weekend. Monday and Tuesday...A chance of thunderstorms over mainly the north half of the region. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. $$