Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Cold temperatures! Moderate to strong N-E winds are forming reverse loaded windslab. Be cautious and take the time to evaluate the snowpack.
Avalanche Problem 1: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Watch for whumpfing, hollow sounds, and shooting cracks.
- Use caution in lee areas. Recent wind loading has created wind slabs.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
Travel and Terrain Advice
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
- Pay attention to overhead hazards like cornices which could easily trigger the deep persistent slab.
Avalanche Summary
A couple size 2 slides recorded in the highway corridor yesterday. Also one slide heard but not observed off the north aspect of Cheops in the Connaught Creek drainage.
Snowpack Summary
Over 15 hours of strong N-NE winds are reverse loading storm snow along ridgelines and exposed terrain at and above treeline. Expect widespread wind effect. On solar aspects, a well developed crust is buried 40cm. Persistent weak layers from January and December are now buried 150-200cm.
Weather Forecast
Today a mix of sun and cloud, NE-E winds to 25km/h and an alpine high temperature of -20C, that will feel bitterly cold. A mix of sun and cloud and continued cold with daytime highs of -20C accompanied by light N-E winds to start the new work week.
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15 hrs of strong N-NE winds have formed reverse loaded windslab at and above treeline. Natural and skier triggered avalanches are expected from this ongoing loading. Avoid exposing yourself to overhead hazard.