Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
150 AM MST Sat Dec 6 2025
MTZ067-068-070700-
/O.EXT.KBYZ.WS.W.0017.000000T0000Z-251207T0700Z/
Absaroka/Beartooth Mountains-Crazy Mountains-
Including the locations of Cooke City
150 AM MST Sat Dec 6 2025
...WINTER STORM WARNING NOW IN EFFECT UNTIL MIDNIGHT MST TONIGHT...
* WHAT...Periods of moderate to heavy snow, strong winds and blowing
snow. Additional snow accumulations between 8 and 15 inches. Winds
gusting as high as 60 mph on the mountain tops.
* WHERE...Absaroka/Beartooth Mountains and Crazy Mountains.
* WHEN...Until midnight MST tonight.
* IMPACTS...Mountain recreation will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...The heaviest snowfall will occur on west and
northwest facing slopes, including the mountains near Cooke City.
The mountains around Red Lodge will see much less snowfall, 1 to 5
inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those in the backcountry should ensure they are prepared for
dangerous winter conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1045 AM MST Sat Dec 6 2025
MTZ330-062100-
/O.CON.KTFX.WS.W.0019.000000T0000Z-251207T0400Z/
Gallatin and Madison County Mountains and Centennial Mountains-
Including the following locations: Raynolds Pass, Targhee Pass,
Big Sky, and West Yellowstone
1045 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MST THIS
EVENING...
* WHAT...Snow. Additional snow accumulations up to 4 inches. Winds
gusting as high as 35 mph.
* WHERE...Gallatin and Madison County Mountains and Centennial
Mountains.
* WHEN...Until 9 PM MST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1045 AM MST Sat Dec 6 2025
MTZ317-320-062100-
/O.CON.KTFX.WS.W.0019.000000T0000Z-251206T2100Z/
Little Belt and Highwood Mountains-Big Belt, Bridger and Castle
Mountains-
Including the following locations: Maudlow, Neihart, Monarch,
Bozeman Pass, Kings Hill Pass, Trident, Deep Creek Pass, and
Battle Ridge Pass
1045 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
* WHAT...Snow, diminishing to snow showers late this afternoon.
Additional snow accumulations up to two inches. Wind gusts up to
35 mph.
* WHERE...Big Belt, Bridger and Castle Mountains and Little Belt and
Highwood Mountains.
* WHEN...Until 2 PM MST this afternoon.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. Blowing snow could
significantly reduce visibility. Gusty winds could bring down tree
branches.
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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1045 AM MST Sat Dec 6 2025
MTZ327-062100-
/O.CON.KTFX.WS.W.0019.000000T0000Z-251207T0000Z/
Northwest Beaverhead County-
Including the following locations: Big Hole Pass, Wise River,
Dewey, Wisdom, and Chief Joseph Pass
1045 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...Snow, diminishing to snow showers this evening Additional
snow accumulations up to 4 inches. Winds gusting as high as 40 mph.
* WHERE...Northwest Beaverhead County.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions. Blowing snow could
significantly reduce visibility. Gusty winds could bring down tree
branches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
509 AM PST Sat Dec 6 2025
IDZ004-070000-
/O.CON.KOTX.WS.W.0010.000000T0000Z-251207T0000Z/
Central Panhandle Mountains-
Including the cities of Osburn, Kellogg, Dobson Pass, Pinehurst,
Lookout Pass, Mullan, St. Maries, Wallace, Fernwood, and Fourth
Of July Pass
509 AM PST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
* WHAT...Heavy snow. Additional snow accumulations up to 6 inches.
Winds gusting as high as 35 mph.
* WHERE...Osburn, Kellogg, Dobson Pass, Pinehurst, Lookout Pass,
Mullan, St. Maries, Wallace, Fernwood, and Fourth Of July Pass.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Winter travel conditions expected.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. For the latest road
information in Idaho, call 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1251 AM MST Sat Dec 6 2025
WYZ012-024-062100-
/O.CON.KRIW.WS.W.0012.000000T0000Z-251206T2100Z/
Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges-
1251 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
* WHAT...Heavy snow. Additional snow accumulations of 5 to 12
inches, with higher elevations seeing an additional 15 to 20
inches. Gusty winds of 30 to 45 mph will be common. Gusts of 60
mph are possible across the highest elevations.
* WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming
Ranges.
* WHEN...Until 2 PM MST this afternoon.
* IMPACTS...Travel could be very difficult, especially over Teton,
Togwotee, and Salt River Passes. The hazardous conditions could
impact travel through midday Saturday.
* ADDITIONAL DETAILS...Periods of moderate to heavy snow are
possible through Noon Saturday. Snow and gusty winds could cause
reduced visibilities and drifting snow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1251 AM MST Sat Dec 6 2025
WYZ008-070000-
/O.CON.KRIW.WS.W.0012.000000T0000Z-251207T0000Z/
Bighorn Mountains West-
1251 AM MST Sat Dec 6 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...Snow expected. Additional snow accumulations of 8 to 15
inches over central and northern portions of the western Bighorn
Mountains, with higher elevations seeing up to 20 inches. Snow
accumulations of 1 to 8 inches across southern portions of the
Bighorns.
* WHERE...Bighorn Mountains West.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...Travel could be very difficult over Granite and Powder
River Passes. The hazardous conditions could impact the travel on
Saturday morning.
* ADDITIONAL DETAILS...Heavy periods of snow are expected between
5AM and NOON Saturday when snowfall rates of 1 or more inches will
be possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
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 .
&&
$$
