


Hazardous Weather Outlook
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
989 FLUS45 KRIW 291029 HWORIW Hazardous Weather Outlook National Weather Service Riverton WY 429 AM MDT Tue Jul 29 2025 WYZ001>020-022>030-301430- 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- 429 AM MDT Tue Jul 29 2025 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and tonight. Showers and thunderstorms are expected to start developing late this morning across western WY. By the afternoon these showers and thunderstorms will spread east of the Divide. The favorable environment east of the Divide will support the potential for strong to severe thunderstorms to develop. The main hazards as a result of any strong to severe storms will be large hail, strong gusty winds, and heavy downpours. Showers and storms will gradually dissipate by the late evening hours. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Wednesday through Saturday...Daily chances for afternoon showers and thunderstorms. The best chances will remain east of the Divide with lesser chances elsewhere. Periodic heavy downpours will be possible with any showers or thunderstorms that develop. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. $$