Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
232 AM MST Mon Dec 1 2025
COZ001>014-017>023-UTZ022>025-027>029-020945-
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-
232 AM MST Mon Dec 1 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.
Snow will taper off this morning on our mountains, with a few
flurries falling into midday up against the Continental Divide. Skies
clear across the region this afternoon with sunshine and high
temperatures 5-10 degrees cooler behind the cold front. Overnight
lows Tuesday morning will be some of the coldest of the season with
mountain basins in the single digits and our lower desert valleys
down in the low 20`s.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Unsettled conditions are still expected to return Tuesday afternoon,
with additional measurable mountain snowfall expected through
Thursday morning. Another disturbance comes into view this weekend
with snow favoring our northern mountains. Temperatures remain on the
cool side of climatology through the period.
.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
959 AM MST Mon Dec 1 2025
COZ030>051-021700-
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-
959 AM MST Mon Dec 1 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
No hazardous weather expected today.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
A winter system is expected to bring snow to the mountains
starting Tuesday morning before shifting eastward onto the plains Tuesday
night. The heaviest accumulations are expected across the highest
elevations of the Front Range Mountains and the Park Range, where
hazardous travel conditions are expected to develop, especially
across mountain passes and along the I-70 mountain corridor by the
Wednesday morning commute, continuing through the day Wednesday.
Light accumulations are expected along the I-25 corridor, I-70
corridor from Denver east to the Kansas border, and the Palmer
Divide that may create slick conditions for the Wednesday morning
commute as well.
Temperatures are expected to moderate through the week with a few
chances for light mountain snow showers under northwest flow
aloft through the rest of the forecast period.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed, but snowfall reports will
be appreciated.
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
408 AM MST Mon Dec 1 2025
WYZ103>106-109>117-021115-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte 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-
408 AM MST Mon Dec 1 2025
This hazardous weather outlook is for portions of south central
Wyoming and southeast Wyoming.
.DAY ONE...TODAY AND TONIGHT
A High Wind Warning is in effect starting as early as 200 PM today
for the wind prone areas of southeast Wyoming. Westerly winds may
gust as high as 70 MPH for portions of the Interstate 80 corridor
between Rawlins and Laramie, and between Laramie and Cheyenne, and
Interstate 25 between Wheatland and Chugwater. Outside of the wind
prone areas, winds will gust as high as 45 MPH.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
Another round of light snow possible Tuesday night and into
Wednesday.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Pueblo CO
405 AM MST Mon Dec 1 2025
COZ058>089-093>099-021115-
Western Mosquito Range/East Lake County Above 11000 Feet-
Leadville Vicinity/Lake County Below 11000 Feet-
Eastern Sawatch Mountains Above 11000 Feet-
Western Chaffee County Between 9000 and 11000 Feet-
Central Chaffee County Below 9000 Feet-
Western Mosquito Range/East Chaffee County Above 9000 Feet-
Saguache County West of Continental Divide Below 10000 Feet-
Saguache County East of Continental Divide Below 10000 Feet-
La Garita Mountains Above 10000 Feet-
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-Eastern San Juan Mountains Above 10000 Feet-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
Northwestern Fremont County Above 8500 Feet-
Western/Central Fremont County Below 8500 Feet-
Wet Mountain Valley Below 8500 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
Crowley County-La Junta Vicinity/Otero County-
Eastern Las Animas County-Western Kiowa County-
Eastern Kiowa County-Las Animas Vicinity/Bent County-
Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County-
405 AM MST Mon Dec 1 2025
This hazardous weather outlook is for portions of central...east
central...south central and southeast Colorado.
.DAY ONE...Today and Tonight
Light to moderate snow is expected to continue through the morning
hours over the southern I-25 corridor, the Wet mountains, and the
southern Sangres. Though travel impacts are diminishing as snowfall
rates are decreasing, snow packed and slick roads may still be
possible through Noon, especially for CO 12, CO 69, and US 160 near
and east of La Veta Pass. Additional snow accumulations of 1 to 2
inches will be possible this morning, coming to an end from north to
south, and by Noon at the latest over the southern Sangres.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
An upper storm system will move across southern Colorado late
Tuesday night through Thursday morning. Mountain areas will see
accumulating snow through this period, with 3 to 6 inches
possible. Lower elevations, including the Interstate 25 corridor
could see 1 to 3 inches, impacting travel. Snow amounts are
subject to change as the storm approaches.
Persistent northwest flow will lead to near continuous snow
showers for the Central Mountains north of Cottonwood Pass Friday
through Sunday.
.SPOTTER INFORMATION STATEMENT...
Weather conditions that meet reporting criteria for spotters will
be possible over portions of the region.
$$
EHR/88
Hazardous Weather Outlook
National Weather Service Riverton WY
124 AM MST Mon Dec 1 2025
WYZ001>020-022>030-021230-
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-
124 AM MST Mon Dec 1 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST TUESDAY...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
Isolated areas of fog/low clouds in the Upper Green River Basin this
morning and possibly the Jackson/Star Valleys.
Snow will develop over northwestern portions between 8pm and 11pm
tonight, with snowfall rates up to 1"/hr possible over the Tetons
through the night. Winds gusting up to 35 mph could make travel
conditions difficult over Teton Pass overnight into Tuesday morning.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday...Snow continuing over western portions, with the heavier
snow occurring over the Tetons. Isolated snow showers will be
possible east of the Divide, with chances increasing in the evening
as a cold front progresses southward. Accumulations will stay light
(2 inches or less) over central portions.
Friday and Saturday...Another chance of snow for much of the area,
with western portions likely to have periods of snow through this
timeframe.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
