Winter Storm Watch

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 Great Falls MT
907 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.

MTZ301-307-327-050715-
/O.CON.KTFX.WS.A.0018.251205T1200Z-251207T0000Z/
East Glacier Park Region-Southern Rocky Mountain Front-Northwest
Beaverhead County-
Including the following locations: Dewey, Saint Mary, Marias
Pass, Logan Pass, Kiowa, Chief Joseph Pass, Wise River, Big Hole
Pass, East Glacier Park, Wisdom, Rogers Pass, and Babb
907 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.

Remember, a Winter Storm Watch means that there is at least a 50%
chance of impactful winter weather conditions during the watch
period.

&&

$$

Glinskas

URGENT - WINTER WEATHER MESSAGE
National Weather Service Spokane WA
510 AM PST Thu Dec 4 2025

IDZ004-050215-
/O.CON.KOTX.WW.Y.0032.251204T1500Z-251205T1200Z/
/O.CON.KOTX.WS.A.0004.251205T1200Z-251207T0000Z/
Central Panhandle Mountains-
Including the cities of Pinehurst, Fernwood, Osburn, Wallace,
Mullan, Lookout Pass, Kellogg, Dobson Pass, St. Maries, and
Fourth Of July Pass
510 AM PST Thu Dec 4 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY AFTERNOON FOR ELEVATIONS ABOVE 3000 FEET...

* WHAT...For the Winter Weather Advisory, snow expected. Total snow
  accumulations up to 2 inches valleys and 4 to 8 inches in the
  mountains Thursday and Thursday night. For the Winter Storm Watch
  for elevations above 3000 feet, heavy snow possible Friday through
  Saturday. Total snow accumulations of 5 to 13 inches possible.

* WHERE...Pinehurst, Fernwood, Osburn, Wallace, Mullan, Lookout
  Pass, Kellogg, Dobson Pass, St. Maries, and Fourth Of July Pass.

* WHEN...For the Winter Weather Advisory, until 4 AM PST Friday. For
  the Winter Storm Watch, from late tonight through Saturday
  afternoon.

* IMPACTS...Winter travel conditions expected.

* ADDITIONAL DETAILS...Snow will become heavy at times Friday
  through Saturday over Lookout Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. For the latest road
information in Idaho, call 5 1 1.

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