Winter Storm Warning

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1014 AM MDT Wed Jun 18 2025

MTZ301-191200-
/O.NEW.KTFX.WS.W.0013.250621T1800Z-250622T1800Z/
East Glacier Park Region-
Including the following locations: Kiowa, Saint Mary, Marias
Pass, Babb, East Glacier Park, and Logan Pass
1014 AM MDT Wed Jun 18 2025

...WINTER STORM WARNING IN EFFECT FROM NOON SATURDAY TO NOON MDT
SUNDAY...

* WHAT...Heavy, wet snow expected. Total snow accumulations up to 12
  inches at and above 6000 feet, with  up to 4 inches across the
  valley floors of Glacier National Park . Winds gusting as high as
  40 mph.

* WHERE...East Glacier Park Region Zone.

* WHEN...From noon Saturday to noon MDT Sunday.

* IMPACTS...Hazardous travel conditions, especially on
  Going-to-the-Sun and Looking Glass Roads and over the Hudson Bay
  Divide on US Hwy 89 due to slushy snow accumulations on roadways.
  Dangerous backcountry trail conditions, especially in areas of
  exposure. The heavy, wet snow and gusty winds combined with
  foliage may lead to downed trees and power outages.

* ADDITIONAL DETAILS...Those looking to recreate in the backcountry
  of the Glacier National Park should be prepared for adverse trail
  condtions and consider altering their plans

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

Moldan

Winter Storm Watch

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
936 AM MDT Wed Jun 18 2025

MTZ002-191545-
/O.NEW.KMSO.WS.A.0006.250621T1800Z-250622T1800Z/
West Glacier Region-
936 AM MDT Wed Jun 18 2025

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY MORNING...

* WHAT...Heavy wet snow possible. Chance of moderate to major
  impacts from snow is at least 50 percent. Total snow accumulations
  up to a foot for elevations at and above 6000 feet and 4 inches
  possible down to 4000 feet.

* WHERE...Glacier National Park higher elevations including
  Going-to-the-Sun Road and Logan Pass, Marias Pass, Polebridge, and
  backcountry of the Flathead National Forest.

* WHEN...From Saturday afternoon through Sunday morning.

* IMPACTS...For MODERATE impacts from snow, expect disruptions to
  normal activities. Hazardous traveling conditions. Use extra
  caution while driving. Closures and disruptions to infrastructure
  may occur. For MAJOR impacts from snow, 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.

* ADDITIONAL DETAILS...Snow loading on trees may produce tree falls
  and create power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.


&&

$$

Hydrologic Outlook

Hydrologic Outlook
MTC029-053-201600-

Hydrologic Outlook
National Weather Service Missoula MT
355 PM UTC Wed Jun 18 2025

...Rock and mudslides due to excessive rainfall...

Where: Flathead and Lincoln Counties in northwest Montana

What: Confidence is trending higher that a prolonged rain event will
produce 2 to 4 inches of rainfall in a 48hr period, starting Friday
evening and lasting into Sunday. The result will be the potential
for rock and debris slides along steep terrain in Glacier National
Park and Forest Service roads in the Flathead and Kootenai National
Forests. Low land ponding of water will be possible in poor drainage
areas.

Consider delaying backcountry travel this weekend, or plan
accordingly as conditions will be cold and wet, and moderate to
heavy snow is expected at elevations above 6000 feet. Check
weather.gov/Missoula for further updates and details in the coming
days.
$$