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Avalanche Forecast

Archived

Dec 4th, 2025–Dec 5th, 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.

Wind slabs in the alpine and isolated treeline pockets continue to demand caution—evaluate steep slopes for fresh wind effect.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited at this time of year.

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

Snowpack Summary

Up to 30 cm of new snow has accumulated since early this week. Steady westerly winds have built deeper deposits in exposed, wind-loaded terrain, while in sheltered areas, the new snow likely rests on a layer of surface hoar or faceted crystals.

The mid and lower snowpack remains generally well-bonded, containing several crusts from earlier in the season.

Average snow depths at treeline range from 40 to 80 cm and decrease dramatically at lower elevations.

Weather Summary

Thursday Night
Cloudy. 2 to 3 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -5 °C.


Friday
Cloudy. 2 to 4 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -7 °C.

Saturday
Cloudy. 2 to 4 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -12 °C.

Sunday
Mostly cloudy. Up to 20 cm of snow at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • 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.