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Avalanche Forecast

Archived

Dec 8th, 2025–Dec 9th, 2025

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

Crowsnest North, Crowsnest South.

Steer clear of ridge crests and wind-loaded slopes. With strong winds, remember that wind slabs can form well below ridgelines and may extend farther downslope than expected.

Confidence

Low

Avalanche Summary

Wind slabs are expected to be reactive to human and natural triggers.

No new avalanches have been reported. However, observations are limited. If you are out and about in the mountains, please consider posting your observations to the MIN.

Snowpack Summary

High elevations are heavily wind-affected, ranging from exposed rocks to dense wind slabs. Overnight snowfall and strong winds will fall onto these surfaces and become redistributed into fresh wind slabs. Softer snow may still be found in sheltered areas or at lower elevations. At treeline and below, the surface snow may be moist due to recent rain.

A mid November crust is buried 30–50 cm deep. The lower snowpack consists of multiple crusts, and in some areas, a layer of weak, sugary facets can be found near the ground.

Snowpack depths range from 40–120 cm. In many areas, especially below treeline, slopes lack enough snow to cover ground roughness and produce avalanches.

Weather Summary

Monday Night
Cloudy. 30 mm of precipitation as snow or rain at treeline. 80 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

Tuesday
Mostly clear. 50 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1700 m.

Wednesday
Mostly cloudy. 3 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.

Thursday
Cloudy. 10 mm of precipitation as snow or rain at treeline. 50 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • 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.