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Winter Storm Watch

Status

New Event Active alert

Start Time

Tue 12/16/2025 10:00 PM EST

End Time

Thu 12/18/2025 01:00 AM EST

Significance

Watch

Impacts

Moderate impact

Locations Affected

Kintla Lake, MT ∙ West Glacier, MT ∙ Mount Saint Nicholas, MT ∙ Woods Bay, MT ∙ Glacier National Park, MT ∙ Pentagon Mountain, MT ∙ Mount Thompson-Seton, MT ∙ Apgar, MT ∙ Mount Stimson, MT ∙ Mount Carter, MT

Full Alert Message

URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 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.

Technical Header

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