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Avalanche Forecast

Archived

Dec 6th, 2025–Dec 7th, 2025

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Boundary, Ningunsaw, Ningunsaw, Ningunsaw.

Avoid areas that have snow blowing into deeper deposits.



Confidence

Low

Avalanche Summary

On Friday a few small ( size 1 to 2 ) natural wind slab avalanches were reported in lee features.

If you are getting out in the backcountry, consider making a post on the MIN (Mountain Information Network).

Snowpack Summary

Recent snow (5 to 15 cm ) combined with moderate to strong wind have formed wind slabs on leeward slopes. Expect to find soft snow in sheltered areas. A layer of weak, feathery crystals (surface hoar) may be found 20 to 30 cm down.

A 2 to 10 cm thick rain crust can be found down 50 to 100 cm at 1400 m and below. This layer is currently not an avalanche concern.

At treeline we expect a snow depth of 250 cm or more. Snowpack depth tapers with elevation to around 50 cm at valley bottoms.

Many early season hazards are just below the surface below treeline.

Weather Summary

Saturday Night
Cloudy. Up to 10 cm of snow. 30 km/h southeast ridgetop wind. Treeline temperature -5 °C. Freezing level 400 m.

Sunday
Cloudy. 5 to 10 cm of snow. 30 km/h southeast ridgetop wind. Treeline temperature -5 °C. Freezing level 700 m.

Monday
Mostly cloudy. 10 cm of snow. 40 km/h southeast ridgetop wind. Treeline temperature -10 °C.

Tuesday
Mostly cloudy. 5 to 10 cm of snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.
  • Shooting cracks, whumpfs, and recent avalanches are strong indicators of an unstable snowpack.
  • Be cautious of buried obstacles, especially below treeline.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.