Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Rising freezing level and solar input will increase avalanche hazard as the day progresses.
Avalanche Problem 1: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use extra caution on slopes if the snow is moist or wet.
- Avoid exposure to overhead solar avalanche terrain, avalanches may reach the end of run out zones.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
70-90cm of settled snow sits on the mid March crust/facet combo and fails suddenly in the moderate-hard range in stability tests on solar aspects.
Travel and Terrain Advice
- Be cautious with convexities and steep slopes on solar aspects.
Avalanche Summary
Numerous natural loose wet avalanches yesterday from tree line and below due to the warm temps and rain to 2300m.
Artillery avalanche control produced results up to sz 2.5 along the highway corridor yesterday.
Avalanche activity has tapered off with a decent overnight freeze, but use caution on southerly aspects if the solar radiation is strong.
Snowpack Summary
A fresh surface crust formed by yesterdays rain up to 2300m and cool temps overnight exists on all aspects, with 5cm of new snow at higher elevations. Moist snow may be found below the crust in the top 20cm of the snowpack. Well-settled mid and lower snowpack with the Mar 15 crust complex down 70-90cm on solar aspects.
Weather Forecast
A mix of sun and cloud for the day with isolated convective flurries in the afternoon. Temps will range from 3 to -3 as the freezing level rises to1700m. Wind will be light from the south. Several pulses of precipitation will reach our area on Thursday and Friday with freezing levels around 1800m.
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The sun is expected to make an appearance today which will heat up solar aspects quickly and weaken the surface snow, resulting in potential avalanches.