Avalanche Forecast

Issued: Dec 1st, 2024 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is below threshold. Known problems include Storm Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

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Start on small slopes and watch for signs of instability like shooting cracks or recent avalanches.

The avalanche danger is based on new snow not bonding well to the old surface.

Summary

Confidence

Low

Avalanche Summary

No new avalanches have been reported.

Early season observations are very limited. Please consider sharing your observations with forecasters and the backcountry community through the Mountain Information Network.

Snowpack Summary

New snow falling with moderate southwest wind could form reactive windslabs in leeward terrain.

In the alpine and exposed areas at treeline, this new snow is falling on hard, wind-affected surfaces. In lower elevation sheltered trees, it will cover weak surface hoar and facets.

The remainder of the snowpack is generally strong, with some crusts near the base.

Snow depths vary significantly across the region, with about 50 cm at treeline and up to 100 cm in alpine areas.

Weather Summary

Sunday Night

Cloudy with 5 to 10 cm of snow expected. 25-35 km/h southwest ridgetop wind. Treeline temperature -17°C, temperature inversion with -10°C above 1600 m.

Monday

Cloudy with 10 to 15 cm of snow expected. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -7°C, temperature inversion with -5°C above 1800 m.

Tuesday

Cloudy with 3 to 7 cm of snow expected. 25 to 35 km/h south ridgetop wind. Treeline temperature -12°C, temperature inversion with -5°C above 1800 m.

Wednesday

Mostly cloudy with 2 to 5 cm of snow expected. 45 to 70 km/h ridgetop wind. Treeline high 2 °C in potential above freezing layer.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.

Problems

Storm Slabs

An icon showing Storm Slabs

In wind exposed areas, avalanches will be more likely on north and east facing slopes. In sheltered areas, the likelihood of avalanches will depend on how a potentially weak layer of facets or surface hoar reacts to the new load.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Dec 2nd, 2024 4:00PM

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