High Wind Warning
URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
437 AM MST Mon Dec 8 2025
WYZ019-020-022-027>030-090245-
/O.CON.KRIW.HW.W.0013.251209T0600Z-251211T1200Z/
Green Mountains and Rattlesnake Range-Natrona County Lower
Elevations-Casper Mountain-South Lincoln County-Rock Springs and
Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Green River, Wamsutter, Kemmerer, Casper,
Cokeville, Jeffrey City, and Rock Springs
437 AM MST Mon Dec 8 2025
...HIGH WIND WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5
AM MST THURSDAY...
* WHAT...West winds 35 to 45 mph with gusts up to 65 mph expected.
Gusts to 70 mph are possible in Sweetwater County.
* WHERE...Casper Mountain, Green Mountains and Rattlesnake Range,
Natrona County Lower Elevations, East Sweetwater County, Flaming
Gorge, Rock Springs and Green River, and South Lincoln County.
* WHEN...From 11 PM this evening to 5 AM MST Thursday. The strongest
wind will occur during the daytime hours with a lull in the wind
possible on Tuesday night.
* IMPACTS...Travel will be difficult, especially for high profile
vehicles.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.
&&
$$
For more information from the National Weather Service, visit
https://weather.gov/riw/ .
Hattings
Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
435 AM MST Mon Dec 8 2025
WYZ014-015-024-090245-
/O.CON.KRIW.WS.A.0010.251209T1200Z-251211T0000Z/
Wind River Mountains West-Wind River Mountains East-Salt River
and Wyoming Ranges-
435 AM MST Mon Dec 8 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
* WHAT...Heavy snow possible. Total snow accumulations of 8 to 16
inches possible. Winds could gust as high as 50 mph.
* WHERE...Wind River Mountains East, Wind River Mountains West, and
Salt River and Wyoming Ranges.
* WHEN...From late tonight through Wednesday afternoon.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Tuesday morning and evening commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
&&
$$
For more information from the National Weather Service, visit
https://weather.gov/riw/ .
Hattings
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
438 AM MST Mon Dec 8 2025
COZ001>014-017>023-UTZ022>025-027>029-091145-
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-
438 AM MST Mon Dec 8 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.
Light snow accumulations are possible over the northern and central
mountains. Winter driving conditions over the mountain can be
expected during the morning hours with improvement this afternoon as
the snow tapers off.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
The northern and portions of the central Colorado mountains are
likely to see additional periods of light snow showers through the
week as moisture continues to brush the Central Rockies. Be prepared
for impacts to travel over the Rabbit Ears and Vail Passes at times.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
315 AM MST Mon Dec 8 2025
WYZ001>020-022>030-091400-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-
Southeast Bighorn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
315 AM MST Mon Dec 8 2025
...Winter Storm Watches and Warnings in effect for most of the
western mountains tonight through Wednesday...
...High Wind Warning in effect across southern Wyoming and Natrona
County from late tonight through Wednesday night...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
Mainly light snow in the mountains. Heavier snow moving back into
the northern mountains tonight. Please see Winter Weather Products
and forecasts for details.
Strong to high wind developing from Kemmerer through Rock Springs
and into Natrona County. Please see High Wind Warnings for
details.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday and Wednesday...Snow likely in the western and northern
mountains. Strong to high wind continuing in southern Wyoming.
Thursday night and Friday...Another chance for snow in the
northern mountains.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
