URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
252 PM MST Mon Dec 15 2025

MTZ301-307-161300-
/O.CON.KTFX.WS.A.0020.251217T0300Z-251218T0600Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: Kiowa, Babb, Saint Mary, Logan
Pass, Rogers Pass, Marias Pass, and East Glacier Park
252 PM MST Mon Dec 15 2025

...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY EVENING...

* WHAT...Heavy snow possible. Total snow accumulations between 4 and
  10 inches possible at Marias Pass with higher amounts over the
  mountains in Glacier National Park. Winds could gust over 70 mph
  at times.

* WHERE...The Continental Divide along the Rocky Mountain Front.

* WHEN...From Tuesday evening through Wednesday evening.

* IMPACTS...Travel could be very difficult to dangerous and tire
  chains may be required for some vehicles. Visibility may drop
  below 1/4 mile at times due to falling and blowing snow. 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.

&&

$$

RG

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1258 PM MST Mon Dec 15 2025

WYZ001-002-012-014-015-024-161100-
/O.NEW.KRIW.WS.A.0011.251217T0800Z-251218T0600Z/
Yellowstone National Park-Absaroka Mountains-Teton and Gros
Ventre Mountains-Wind River Mountains West-Wind River Mountains
East-Salt River and Wyoming Ranges-
Including the cities of Lake, Mammoth, and Old Faithful
1258 PM MST Mon Dec 15 2025

...WINTER STORM WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY EVENING...

* WHAT...Heavy snow possible. Total snow accumulations 6 to 10
  inches above 8000 feet possible, with near 12 inches at the
  highest elevations. Widespread westerly winds gusting 40 to 60
  mph, with isolated stronger winds.

* WHERE...Portions of central, northwest, and west central Wyoming.

* WHEN...From late Tuesday night through Wednesday evening.

* IMPACTS...Travel will likely be very difficult, namely along
  mountain passes like Teton, Togwotee, and South Pass due to a
  combination of strong winds and falling snow reducing visibilities.

* ADDITIONAL DETAILS...Areas of winds near 75 mph possible,
  especially for eastern mountain slopes, like the eastern Absaroka
  and Wind River Mountains. The heaviest snow occurs between about 1
  AM and noon MST Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

For more information from the National Weather Service, visit
https://weather.gov/riw/ .

Wittmann

URGENT - WINTER WEATHER MESSAGE
National Weather Service Fairbanks AK
415 AM AKST Mon Dec 15 2025

AKZ805-160100-
/O.NEW.PAFG.WS.A.0030.251217T0000Z-251218T0000Z/
Eastern Beaufort Sea Coast-
Including the cities of Point Thomson, Flaxman Island, and
Kaktovik
415 AM AKST Mon Dec 15 2025

...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON...

* WHAT...Blizzard conditions possible. Total snow accumulations up
  to one inch possible. Winds could gust as high as 55 mph.

* WHERE...Eastern Beaufort Sea Coast.

* WHEN...From Tuesday afternoon through Wednesday afternoon.

* IMPACTS...Visibilities may drop below 1/4 mile due to falling and
  blowing snow. Travel will be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare for possible blizzard conditions. Continue to monitor the
latest forecasts for updates on this situation.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
127 PM MST Sun Dec 14 2025

MTZ002-162000-
/O.NEW.KMSO.WS.A.0011.251217T0300Z-251218T0600Z/
West Glacier Region-
127 PM MST Sun Dec 14 2025

...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY EVENING...

* WHAT...Heavy snow and damaging winds possible. There is a chance
  of major winter weather impacts. Total snow accumulations between
  1 and 5 inches in the valleys and 8 to 15 inches possible at high
  elevations, including Marias Pass. Winds could gust over 50 mph.

* WHERE...Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Essex,
  Polebridge, Marias Pass, and Glacier National Park.

* WHEN...From Tuesday evening through Wednesday evening.

* IMPACTS...Visibilities may drop below 1/4 mile due to falling and
  blowing snow. The strong winds and weight of snow on tree limbs
  may down power lines and could cause sporadic power outages. For
  MAJOR winter weather impacts, expect considerable disruptions to
  normal activities. Dangerous or impossible traveling conditions.
  Avoid travel in the impacted areas if possible. Widespread
  closures and disruptions to infrastructure may occur. Widespread
  blowing snow could significantly reduce visibility. The hazardous
  conditions could impact the Wednesday morning and evening
  commutes, especially over higher passes. Very strong winds could
  cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

JK