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Avalanche Forecast

Archived

Dec 1st, 2025–Dec 2nd, 2025

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

Regions

East Kakwa, Pine Pass, Tumbler.

While large avalanches are unlikely with the thin early-season snowpack, pockets of reactive wind slab may persist on many steep slopes, near ridgetops, and on rollovers

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited at this time of year. New snow and wind may have formed fresh, reactive wind slabs.

Let us know what you are seeing by posting a MIN if you are heading out in the backcountry!

Snowpack Summary

Small amounts of new snow continue to accumulate, accompanied by moderate to strong westerly winds. In some areas, up to 20 cm of recent snow has likely buried a mix of faceted grains or surface hoar in sheltered locations. While firm, wind-affected snow exists in exposed terrain.

A supportive melt-freeze crust is present 20–50 cm below the surface at lower elevations, but appears to be generally absent at higher elevations below treeline (~1500 m) and above.

Average snow depths at treeline range from 40 to 70 cm.

At lower elevations, the snowpack thins significantly, and a rain crust may be encountered. Expect highly variable snow conditions and quality.

Weather Summary

Monday Night
Cloudy. Trace amounts of snow at treeline. 50 km/h northwest ridgetop wind. Treeline temperature -5 °C.

Tuesday
Mostly cloudy. 1 to 5 cm of snow at treeline. 30 km/h northwest ridgetop wind. Treeline temperature -5 °C.

Wednesday
Mix of sun and clouds. 1 to 2 cm of snow at treeline. 50 km/h west ridgetop wind. Treeline temperature -5 °C.

Thursday
Mix of sun and clouds. 1 to 5 cm of snow at treeline. 60 km/h west ridgetop wind. Treeline temperature -3 °C.



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.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • 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.