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Avalanche Forecast

Archived

Dec 10th, 2025–Dec 11th, 2025

Alpine
Natural avalanches unlikely.
Treeline
Early Season
Below Treeline
Early Season
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

Regions

Chic-Choc Mountains.

With the approaching storm, we are issuing our first avalanche danger rating of the winter. Skiing conditions remain very limited and hazardous, with thin snow coverage, many exposed obstacles, and challenging access. Avalanche danger will be especially higher in couloirs and ravines, where snow tends to accumulate more quickly early in the season.

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

The easterly wind forecasted for Wednesday night into Thursday will carry the new snow and accumulate it on slopes that previously had little snow cover.

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

A storm from the Great Lakes will pass through on Thursday evening, followed by periods of snow squalls until the end of the week.

Wednesday evening and night: Snow 10 to 20 cm. Wind from the northeast, 30 to 60 km/h. Low -14, warming overnight.

Thursday: Snow, 2 to 5 cm. Wind from the northwest, 10 to 20 km/h. High -8

Friday: Intermittent snow, 2 to 3 cm. Northwest wind, 30 to 50 km/h. High -8.

Saturday: Alternating sun and clouds. Northwest wind, 20 to 40 km/h. High -11.

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.