Hazardous Weather Outlook
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
387 FLUS45 KRIW 300908 HWORIW Hazardous Weather Outlook National Weather Service Riverton WY 308 AM MDT Wed Jul 30 2025 WYZ001>020-022>030-311315- 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- 308 AM MDT Wed Jul 30 2025 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and tonight. Showers and thunderstorms are expected to develop throughout the day today. By the afternoon these showers and thunderstorms will spread east of the Divide. Daytime heating and above normal moisture will be capable of fueling the development of a few strong to severe storms. The main hazards as a result of any strong to severe storms will be large hail, strong gusty winds, and heavy downpours. Isolated flash flooding will be possible with any showers or storms. Showers and storms will start to gradually dissipate by the late evening into the early morning hours Thursday. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Thursday through Monday...Daily chances for afternoon showers and thunderstorms. The best chances will remain over central and northern WY with lesser chances elsewhere. Periodic heavy downpours will be possible with any showers or thunderstorms that develop. Precipitation chances will decrease through the weekend becoming more focus across northern WY. Low min RH and breezy winds will develop across southern WY. This may lead to elevated or near critical fire weather conditions through the weekend. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. $$