Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
343 AM MST Thu Dec 4 2025
MTZ067-068-051045-
/O.NEW.KBYZ.WS.W.0017.251204T2100Z-251206T2100Z/
Absaroka/Beartooth Mountains-Crazy Mountains-
Including the locations of Cooke City
343 AM MST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 PM
MST SATURDAY...
* WHAT...Periods of moderate to heavy snow expected. Total snow
accumulations between 12 and 24 inches, greatest on west facing
slopes where locally higher amounts are possible. Winds gusting as
high as 45 mph.
* WHERE...Absaroka/Beartooth Mountains and Crazy Mountains.
* WHEN...From 2 PM this afternoon to 2 PM MST Saturday.
* IMPACTS...Recreation in the backcountry will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...Snowfall amounts on the northeast facing
slopes around Nye to Red Lodge are much less, around 3 to 6 inches.
A temporary break in the snowfall is expected Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those in the backcountry should ensure they are prepared for
dangerous winter conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
219 AM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.A series of winter storms will begin to push into North Central and
Southwestern Montana today, with snow beginning over the higher
terrain early this afternoon. Today`s snowfall will focus on the
Mountains of Central and South-Central Montana, with 4 to 8 inches
over both Kings Hill and Bozeman Passes today, with higher amounts
above pass level. A period of lighter snowfall is expected Friday
morning and afternoon, with more widespread heavy snow returning to
the area around sunset Friday. Snow will continue across the area
Friday night into Saturday evening, with an additional 6 to 12
inches expected over the passes and higher amounts above pass level.
MTZ317-320-330-050030-
/O.UPG.KTFX.WS.A.0018.251205T0000Z-251206T1200Z/
/O.NEW.KTFX.WS.W.0019.251204T1800Z-251206T1200Z/
Little Belt and Highwood Mountains-Big Belt, Bridger and Castle
Mountains-Gallatin and Madison County Mountains and Centennial
Mountains-
Including the following locations: Maudlow, Bozeman Pass, Deep
Creek Pass, Raynolds Pass, Targhee Pass, Kings Hill Pass, Battle
Ridge Pass, Big Sky, West Yellowstone, Trident, Monarch, and
Neihart
219 AM MST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 AM
MST SATURDAY...
* WHAT...Heavy snow expected. Snowfall totals of 4 to 8 inches at
pass level through tonight with an additional 5 to 12 inches at
and above pass level Friday and Saturday. Total snow accumulations
between 10 and 20 inches. Winds gusting as high as 40 mph.
* WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and
Highwood Mountains, and Gallatin and Madison County Mountains and
Centennial Mountains.
* WHEN...From 11 AM this morning to 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.
* ADDITIONAL DETAILS...Significant travel impacts to the Thursday
and Friday commutes are possible for Bozeman Pass and along
Highway 191 south of Bozeman.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
Remember, a Winter Storm Warning means that there is at least an 80%
chance of impactful winter weather conditions during the warning
period.
&&
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
517 AM MST Thu Dec 4 2025
WYZ001-002-050330-
/O.CON.KRIW.WW.Y.0034.251205T0000Z-251206T2100Z/
Yellowstone National Park-Absaroka Mountains-
Including the cities of Mammoth, Old Faithful, and Lake
517 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 2 PM MST SATURDAY...
* WHAT...Snow expected. Total snow accumulations of 4 to 8 inches;
accumulations of 10 to 15 inches at the South and Northeast
entrances and near Pahaska; locally higher amounts of 1 to 2 feet
in the higher elevations in the Pitchstone Plateau and the western
slopes of the Absarokas. Winds gusting as high as 45 mph over the
Absarokas through the period. Gusts as high as 35 mph in
Yellowstone NP Friday night.
* WHERE...Absaroka Mountains and Yellowstone National Park.
* WHEN...From 5 PM this afternoon to 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Thursday evening and Friday morning commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
517 AM MST Thu Dec 4 2025
WYZ008-050330-
/O.CON.KRIW.WW.Y.0034.251205T0000Z-251206T2100Z/
Bighorn Mountains West-
517 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 2 PM MST SATURDAY...
* WHAT...Snow expected. Total snow accumulations of 8 to 16 inches
from Cloud Peak and Granite Pass northward. Minimal snowfall
amounts south of Powder River Pass.
* WHERE...Bighorn Mountains West.
* WHEN...From 5 PM this afternoon to 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult over Granite Pass. The
hazardous conditions could impact the Thursday evening and Friday
morning commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
343 AM MST Thu Dec 4 2025
MTZ171-051045-
/O.NEW.KBYZ.WW.Y.0039.251205T0000Z-251205T2100Z/
Pryor/Northern Bighorn Mountains-
343 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 PM
MST FRIDAY...
* WHAT...Snow expected. Total snow accumulations between 4 and 8
inches, greatest on northwest facing slopes. Winds gusting as high
as 30 mph.
* WHERE...Pryor/Northern Bighorn Mountains.
* WHEN...From 5 PM this afternoon to 2 PM MST Friday.
* IMPACTS...Recreation in the backcountry will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...Those in the backcountry should ensure they
are prepared for dangerous winter conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. For the latest road
conditions, call 5 1 1.
&&
$$
Additional graphics for this hazard can be found at
http://www.weather.gov/billings
Arends
Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
219 AM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.A series of winter storms will begin to push into North Central and
Southwestern Montana today, with snow beginning over the higher
terrain early this afternoon. Today`s snowfall will focus on the
Mountains of Central and South-Central Montana, with 4 to 8 inches
over both Kings Hill and Bozeman Passes today, with higher amounts
above pass level. A period of lighter snowfall is expected Friday
morning and afternoon, with more widespread heavy snow returning to
the area around sunset Friday. Snow will continue across the area
Friday night into Saturday evening, with an additional 6 to 12
inches expected over the passes and higher amounts above pass level.
MTZ301-307-327-050030-
/O.CON.KTFX.WS.A.0018.251205T1200Z-251207T0000Z/
East Glacier Park Region-Southern Rocky Mountain Front-Northwest
Beaverhead County-
Including the following locations: Saint Mary, East Glacier Park,
Logan Pass, Kiowa, Marias Pass, Rogers Pass, Wisdom, Babb, Chief
Joseph Pass, Wise River, Big Hole Pass, and Dewey
219 AM MST Thu Dec 4 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY AFTERNOON...
* WHAT...Heavy snow possible. Total snow accumulations between 6 and
12 inches possible. Winds could gust as high as 40 mph.
* WHERE...The Continental Divide along the Rocky Mountain Front, and
Northwest Beaverhead County.
* WHEN...From late tonight through Saturday afternoon.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
&&
$$
Ludwig
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
126 PM MST Wed Dec 3 2025
IDZ005-006-MTZ002-004-006-043-051200-
/O.NEW.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-West
Glacier Region-Lower Clark Fork Region-Bitterroot/Sapphire
Mountains-Potomac/Seeley Lake Region-
126 PM MST Wed Dec 3 2025 /1226 PM PST Wed Dec 3 2025/
...WINTER STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
SATURDAY AFTERNOON...
* WHAT...Heavy mixed precipitation possible. There is a chance of
moderate to major winter weather impacts. Total snow accumulations
of 3 to 7 inches along valley bottoms, 7 to 15 inches at mountain
pass level, and 24 to 36 inches along mountain crests. Ice
accumulations around a light glaze possible.
* WHERE...In IDAHO, Northern Clearwater Mountains and Southern
Clearwater Mountains. In MONTANA, West Glacier Region,
Bitterroot/Sapphire Mountains, Lower Clark Fork Region, and
Potomac/Seeley Lake Region.
* WHEN...From late Thursday night through Saturday afternoon.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning and evening
commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
1259 PM MST Wed Dec 3 2025
IDZ058>066-042000-
/O.CON.KPIH.WS.A.0006.251205T0000Z-251206T1200Z/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-Bear
River Range-Bear Lake Valley-Blackfoot Mountains-Caribou Range-
Big Hole Mountains-Teton Valley-Centennial Mountains - Island
Park-
Including the cities of Kilgore, Malad, Preston, Bone,
Montpelier, Henry, Victor, Grace, Inkom, Driggs, Thatcher, Lava
Hot Springs, Georgetown, Swan Valley, Island Park, Ashton,
Emigration Summit, Downey, St. Charles, McCammon, Wayan, Tetonia,
and Soda Springs
1259 PM MST Wed Dec 3 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH LATE FRIDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations between 8 and
14 inches in the mountains and 4 to 8 inches in the valleys
possible. Winds could gust as high as 35 mph.
* WHERE...Big Hole Mountains, Centennial Mountains - Island Park,
Teton Valley, Bear Lake Valley, Bear River Range, Blackfoot
Mountains, Caribou Range, Franklin/Eastern Oneida Region, and
Marsh and Arbon Highlands.
* WHEN...From Thursday afternoon through late Friday night.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning and evening
commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
&&
$$
Visit weather.gov/pocatello for more information.
GK
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
456 AM MST Thu Dec 4 2025
WYZ001>020-022>030-051600-
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-
456 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
2 PM MST SATURDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 2 PM MST SATURDAY...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Periods of moderate to heavy snow begins late this afternoon and
evening and continues through the overnight hours across the Western
Mountains, Jackson and Star Valleys, and the northern portions of the
western Bighorns. Gusty winds combined with heavy snow could cause
reduced visibilities and hazardous travel.
Wind gusts of 20 to 35 mph are expected across the Wind Corridor,
the Absarokas, including the Cody area, and the upper Wind River
Basin through the afternoon. Isolated gusts of 50 mph are possible in
wind prone locations.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday through Saturday...Periods of snow throughout the day Friday,
with moderate to heavy snow beginning Friday evening and continuing
through Saturday morning across the Western Mountains and the
portions of the western Bighorns. Gusty 25 to 40 mph winds combined
with moderate to heavy snow could cause reduced visibilities and
hazardous travel.
Wind gusts of 30 to 40 mph late Friday night across southern
Wyoming, the Absarokas, northern Johnson County, and the Wind River
Basin through the afternoon. Isolated gusts over 55 mph are also
possible.
Sunday through Wednesday...Multiple chances for snow across the
western mountains and widespread breezy to gusty winds.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
