


Hazardous Weather Outlook
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
586 FLUS45 KRIW 201205 HWORIW Hazardous Weather Outlook National Weather Service Riverton WY 605 AM MDT Sun Apr 20 2025 WYZ001>020-022>030-211615- 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- 605 AM MDT Sun Apr 20 2025 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and tonight. Light showers will be possible across central and northern WY. An isolated afternoon thunderstorm or two cannot be ruled out especially over northwestern WY. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday... Period of light to moderate snow across western mountains during the morning hours. Scattered showers across lower elevations throughout the day gradually moving east by the afternoon/evening. Winds increase during the afternoon and evening with periodic gusts of 25 to 35 mph with isolated gusts exceeding 40 mph possible. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. $$