Avalanche Forecast
Avalanche Bulletin - Glacier National Park
All permit areas are closed today. Tuesday is the last day of the Winter Permit System for the season.
Avalanche Problem 1: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid exposure to avalanche terrain, large avalanches may reach the end of run out zones.
Avalanche Problem 2: Wet Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Point releases have been gaining mass and in some cases triggering wet slab avalanches as they progress down slope. These slides are destructive and running far.
Travel and Terrain Advice
- Avoid exposure to avalanche terrain, large avalanches may reach the end of run out zones.
Avalanche Problem 3: Cornices
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Cornices are ripe and weakened by past warm weather. Avoid exposure to terrain below these large triggers.
Travel and Terrain Advice
- Avoid exposure to avalanche terrain, large avalanches may reach the end of run out zones.
Avalanche Summary
We're in a period of prolonged elevated avalanche danger right now. Numerous avalanches to size 3.5 throughout the park were observed over the last 5 days. We've seen a handful of deep slab avalanches in the backcountry mainly on South-West aspects. These slabs initiated as point releases gathered mass and overloaded a mid pack sliding surface.
Snowpack Summary
On all but the high North facing terrain we have a near isothermal, moist snowpack. High freezing levels, an alpine inversion and rain below 2100m contributed to minimal overnight freezes and marginal surface crust formation over the weekend. Check in to the current weather data to see if alpine temps have been below zero before heading out.
Weather Forecast
On Tuesday expect a cloudy morning clearing in the afternoon, light west winds and a freezing level around 2200m. There is a possibility of convective flurries early in the week. The middle of the week looks like the nicest weather then deteriorates Thursday/Friday with rain showers and freezing levels over 3000m
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Surface layers are somewhere between moist and saturated depending on elevation. Point releases can be expected throughout the day today and may gain mass becoming large slides. Solar heating in the afternoon should increase the avalanche activity.