Hazardous Weather Outlook
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.
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
256 PM MST Mon Dec 8 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-092200-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
256 PM MST Mon Dec 8 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...THIS AFTERNOON AND TONIGHT
- A long duration wind event is beginning today. While some
breaks or lulls will occur, high winds will be a concern every
day through Friday.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
- Damaging winds are expected near and in the lee of southeast
Wyoming mountain ranges Monday evening through Tuesday
evening. Gusts up to 90 mph are expected.
- Cheyenne, Laramie, Rawlins, Wheatland, and Douglas can expect
wind gusts up to 75 mph tonight into Tuesday.
- Wind gusts up to 70 mph are expected to spread into High
Plains during the day Tuesday.
- A backdoor cold front may bring a brief reprieve from the wind
along with a chance for snow showers Tuesday night into early
Wednesday before winds pick up again Wednesday.
.Spotter information statement...
Spotters are encouraged to report any wind damage to the NWS.
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1038 AM MST Mon Dec 8 2025
COZ030>051-091745-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1038 AM MST Mon Dec 8 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
The mountains and foothills will see strengthening winds tonight,
particularly after midnight, when a High Wind Warning goes into
effect. Wind-prone locations, especially north of I-70 and east
of the Continental Divide, are expected to see gusts 65 to 85 mph
through sunrise Tuesday. Travel will be difficult for high profile
vehicles, and damage to trees and powerlines will be possible.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Strong winds will continue across the mountains and foothills,
peaking during the day Tuesday with maximum gusts 75 to 90 mph.
At times, some of these winds may spread into adjacent lower
elevations, especially west of I-25 near the base of the
foothills, and across northern Larimer and Weld Counties.
Light snow expected Wednesday and Thursday for the northern
mountains. Strong winds return Wednesday night into Thursday
morning, with gusts up to 75 mph possible at times across the high
country. Wind-prone areas could see gusty winds as well along the
foothills.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
438 AM MST Mon Dec 8 2025
COZ001>014-017>023-UTZ022>025-027>029-091145-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
438 AM MST Mon Dec 8 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Light snow accumulations are possible over the northern and central
mountains. Winter driving conditions over the mountain can be
expected during the morning hours with improvement this afternoon as
the snow tapers off.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
The northern and portions of the central Colorado mountains are
likely to see additional periods of light snow showers through the
week as moisture continues to brush the Central Rockies. Be prepared
for impacts to travel over the Rabbit Ears and Vail Passes at times.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
