Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ327-051200-
/O.UPG.KTFX.WS.A.0018.251205T1200Z-251207T0000Z/
/O.EXB.KTFX.WS.W.0019.251205T0000Z-251207T0000Z/
Northwest Beaverhead County-
Including the following locations: Dewey, Chief Joseph Pass, Big
Hole Pass, Wisdom, and Wise River
146 PM MST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM
MST SATURDAY...
* WHAT...Heavy snow expected. Snowfall totals between 2 and 6 inches
in the Big Hole Valley and between 8 and 15 inches at pass level.
Winds gusting as high as 40 mph.
* WHERE...Northwest Beaverhead County.
* WHEN...From 5 PM this afternoon to 5 PM 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. 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.
Remember, a Winter Storm Warning means that there is at least an 80%
chance of impactful winter weather conditions during the warning
period.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
102 PM MST Thu Dec 4 2025
...PROLONGED SNOW EVENT...
.A plume of snow will continue to impacted north central Idaho into
west central and southwest Montana tonight. The snow activity will
decrease in intensity during the day on Friday, then a second plume
of precipitation will impact the region late Friday through Saturday.
MTZ006-052015-
/O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/
/O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/
Bitterroot/Sapphire Mountains-
102 PM MST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM
MST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
storm impacts. Total snow accumulations 1 to 5 inches in the
valleys and 8 to 15 inches in the higher terrain including Lolo
and Lost Trail Passes. Winds gusting as high as 40 mph on Friday.
* WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass.
* WHEN...From 5 PM this afternoon to 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Thursday evening and Friday
morning commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
102 PM MST Thu Dec 4 2025
...PROLONGED SNOW EVENT...
.A plume of snow will continue to impacted north central Idaho into
west central and southwest Montana tonight. The snow activity will
decrease in intensity during the day on Friday, then a second plume
of precipitation will impact the region late Friday through Saturday.
IDZ005-006-052015-
/O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/
/O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
1202 PM PST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM
PST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
storm impacts. Total snow accumulations 2 to 6 inches in the
valleys and 9 to 18 inches in the higher terrain including Lolo
Pass.
* WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to
Lolo Pass, Elk River, Elk City, Pierce, and Dixie.
* WHEN...From 4 PM this afternoon to 4 PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Thursday evening and Friday
morning commutes, especially over higher passes.
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 for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
