Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
110 AM MST Tue Dec 2 2025
WYZ001>020-022>030-031215-
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-
110 AM MST Tue Dec 2 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
TONIGHT...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
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 for most
locations in the lower elevations will stay light (2 inches or less).
The exception will be the Star Valley, where 2 to 3 inches are
expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thursday Night and Friday...A fast moving cold front will bring snow
across areas east of the Divide and western portions.
Friday and Saturday...Another chance of snow for much of the area,
with western portions likely to have the best chances.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
331 PM MST Tue Dec 2 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-032245-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
331 PM MST Tue Dec 2 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...THIS AFTERNOON AND TONIGHT
- Another round of light snow will move through the area this
evening through Wednesday morning.
- Most areas can expect between a dusting and an inch of snow,
but a few inches will be possible between Rawlins and
Cheyenne.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
- Long term remains active with multiple systems promoting
prolonged periods of high winds, light snow and cold but
steadily warming temperatures.
.Spotter information statement...
Spotters are encouraged to report snow accumulation to the
National Weather Service in Cheyenne.
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1115 AM MST Tue Dec 2 2025
COZ030>051-031815-
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-
1115 AM MST Tue Dec 2 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...This Afternoon and Tonight
Light snow showers will continue across the mountains today, with
a gradual increase in coverage by this evening. Snow is then
expected to shift into the Front Range and I-25 corridor overnight
tonight. Slick travel conditions will be possible, especially
overnight into Wednesday morning.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Snow will continue through the day Wednesday across the mountains
and I-25 corridor. 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.
Snow will also likely impact the Wednesday morning commute across
the Denver metro and Palmer Divide, with less impacts across the
eastern plains. Snow should taper off by Wednesday afternoon or
evening, with some slick conditions still possible for the evening
commute for areas generally south of I-76.
Temperatures are still on track 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.
$$
