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WWUS45 KTFX 041607
WSWTFX

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.

MTZ317-320-330-050715-
/O.EXT.KTFX.WS.W.0019.251204T1800Z-251206T2100Z/
Little Belt and Highwood Mountains-Big Belt, Bridger and Castle
Mountains-Gallatin and Madison County Mountains and Centennial
Mountains-
Including the following locations: Maudlow, Big Sky, West
Yellowstone, Kings Hill Pass, Trident, Monarch, Targhee Pass,
Neihart, Deep Creek Pass, Bozeman Pass, Battle Ridge Pass, and
Raynolds Pass
907 AM MST Thu Dec 4 2025

...WINTER STORM WARNING NOW IN EFFECT UNTIL 2 PM 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...Until 2 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.

* 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.

&&

$$

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