Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
154 AM MDT Tue Sep 30 2025

WYZ001>020-022>030-011200-
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-
154 AM MDT Tue Sep 30 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

There is a 10% chance for showers over western portions this
morning, increasing to 40-60% of showers and thunderstorms after
1200. There is a 30-50% for showers and thunderstorms over the
central basins and southern portions between 3 PM and 9 PM. Wind
gusts up to 40 mph will be the main threat. There is a 10% chance for
locally heavy rain with the stronger storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Friday and Saturday...Chances for precipitation return to western
portions Friday, spreading across the forecast area Friday night into
Saturday. Elevated fire weather conditions will be possible from
Rock Springs to Casper Friday afternoon. Snow levels around 9500 ft
over western portions Friday, dropping to 7500-8500 ft across the
rest of the area Saturday.

Saturday night and Sunday night...Freezing to near freezing temperatures
possible in the lower elevations.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$