Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
348 AM MST Sun Dec 7 2025
WYZ001>020-022>030-081400-
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-
348 AM MST Sun Dec 7 2025
...Winter Weather Advisories for the Tetons from 11 am today
through 5 am Monday morning...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...This Afternoon and Tonight.
Light to moderate snow returning to the western mountains,
steadiest and heaviest after sunset.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Monday night through Friday...Several periods of snow likely for
the western mountains. Snow possible East of the Divide starting
Wednesday but details on amounts and timing are still highly
uncertain.
Tuesday through Thursday...Strong to high wind likely across
central and southern Wyoming.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
259 AM MST Sun Dec 7 2025
COZ001>014-017>023-UTZ022>025-027>029-081000-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
259 AM MST Sun Dec 7 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Strong winds gusting 30-40 mph will impact travel across the
northern and central Colorado high country with blowing and drifting
snow. Lesser amounts are expected across the southern mountains but
some impact to travel over Highway 550 is expected.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
The northern and portions of the central Colorado mountains are
likely to see additional periods of light snow showers Monday with a
passing disturbance, and a more significant storm system Tuesday
through Thursday produce moderate to heavy snow showers. Be prepared
for impacts to travel over the Rabbit Ears and Vail Passes at times.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today or tonight, however
spotters are encouraged to report snowfall amounts to the
National Weather Service in Grand Junction.
$$
