Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Riverton WY
456 AM MST Thu Dec 4 2025

WYZ001>020-022>030-051600-
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-
456 AM MST Thu Dec 4 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
2 PM MST SATURDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 2 PM MST SATURDAY...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Periods of moderate to heavy snow begins late this afternoon and
evening and continues through the overnight hours across the Western
Mountains, Jackson and Star Valleys, and the northern portions of the
western Bighorns. Gusty winds combined with heavy snow could cause
reduced visibilities and hazardous travel.

Wind gusts of 20 to 35 mph are expected across the Wind Corridor,
the Absarokas, including the Cody area, and the upper Wind River
Basin through the afternoon. Isolated gusts of 50 mph are possible in
wind prone locations.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday through Saturday...Periods of snow throughout the day Friday,
with moderate to heavy snow beginning Friday evening and continuing
through Saturday morning across the Western Mountains and the
portions of the western Bighorns. Gusty 25 to 40 mph winds combined
with moderate to heavy snow could cause reduced visibilities and
hazardous travel.

Wind gusts of 30 to 40 mph late Friday night across southern
Wyoming, the Absarokas, northern Johnson County, and the Wind River
Basin through the afternoon. Isolated gusts over 55 mph are also
possible.

Sunday through Wednesday...Multiple chances for snow across the
western mountains and widespread breezy to gusty winds.

.SPOTTER INFORMATION STATEMENT...

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

$$

Hazard Report Provided By forecast.weather.gov