Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Cheyenne WY
434 AM MST Sun Dec 7 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-081145-
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-
434 AM MST Sun Dec 7 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...TODAY AND TONIGHT
- A High Wind Warning remains in effect for the Arlington and
Bordeaux areas through the early afternoon today.
- Scattered snow showers will move through the area through
midday Sunday.
- After a potential short lull, high winds return Sunday night
into Monday for the wind prone areas.
- Another quick around of mountain snow is expected tonight into
early Monday morning.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
- A long duration, significant high wind event is increasingly
likely beginning Monday night and lasting until Wednesday or
even Thursday.
- There is considerable uncertainty in the forecast between late
Wednesday and Friday due to an arctic cold front that will
stall very near or over our area. A small shift in the front
location will mean wildly different outcomes.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
348 AM MST Sun Dec 7 2025
WYZ001>020-022>030-081400-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-
Southeast Bighorn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
348 AM MST Sun Dec 7 2025
...Winter Weather Advisories for the Tetons from 11 am today
through 5 am Monday morning...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...This Afternoon and Tonight.
Light to moderate snow returning to the western mountains,
steadiest and heaviest after sunset.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Monday night through Friday...Several periods of snow likely for
the western mountains. Snow possible East of the Divide starting
Wednesday but details on amounts and timing are still highly
uncertain.
Tuesday through Thursday...Strong to high wind likely across
central and southern Wyoming.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
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.
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1107 AM MST Sat Dec 6 2025
COZ030>051-071815-
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-
1107 AM MST Sat Dec 6 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...This Afternoon and Tonight
Moderate to occasionally heavy snow will continue in the mountains
through early afternoon, before snowfall intensities quickly
diminish. Strong winds will continue to impact the higher mountain
terrain with gusts 60-80 mph for the windiest location, resulting
in continued areas of blowing snow into the evening at and above
pass levels.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Light snow is expected to linger into Sunday with snow covered
and slick roads possible on Sunday, especially during the morning
over the mountain passes.
For next week, periods of snow will be possible over the northern
mountains through the middle part of next week. Across the plains,
dry conditions are expected to continue, with a gradual warming
trend.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
