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Avalanche Forecast

Archived

Dec 11th, 2025–Dec 12th, 2025

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Early Season
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Early Season
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.

Regions

Chic-Choc Mountains.

Wind slabs are still forming, but remain very isolated in couloirs and depressions. Remain vigilant with regard to obstacles that are generally not buried.

Confidence

Moderate

Avalanche Summary

No avalanche activity was observed or reported.

If you head into the backcountry, thanks for sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

Before this storm, wind slabs were already observed in ravines and alpine couloirs, especially on east and south-facing slopes.

Beneath the wind-blown snow, there is a layer that is transforming into facetted grains, a fragile structure.

The snowpack thickness varies between 40 and 70 cm, with more accumulation in couloirs, gullies, and areas of maximum accumulation.

We are still in early season conditions: there are numerous obstacles on the ground, and they are still very much present!

Weather Summary

WEATHER FOR THE CHIC-CHOCS RIDGES AND SUMMITS

The low pressure system coming from the Great Lakes will continue to bring snow showers until Saturday afternoon.

Thursday evening and night: 2 to 3 cm of snow. Northwest wind 10 to 20 km/h. Low -14.

Friday: Intermittent snow, 5 to 10 cm. Northwesterly wind 30 to 50 km/h. High -8.

Saturday: Alternating sun and clouds. Light snow. Northwesterly wind 20 to 40 km/h. High -11.

Sunday: Alternating sun and clouds. Light wind from the west. High -8.

For more details, see the Chic-Chocs alpine weather forecast.

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Watch for areas of hard wind slab on alpine features.
  • 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.