Bulletin d’avalanche

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Dec 8 – 9, 2025Avalanche Canada
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Archivé · expiré 10 months ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

New snow and wind will make dangerous avalanche conditions especially at higher elevations.



Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5

    Recent snow and wind has created storm slabs that will be deeper and and more likely to trigger on leeward and cross-loaded slopes.

    Retreat to mellower terrain if you find signs of instability like shooting cracks, or recent avalanches.

Avalanche Summary

On Saturday numerous small ( size 1 ) natural storm and wind slabs were reported.

On Friday a few small ( size 1 to 2 ) natural wind slab avalanches were reported in lee features.

If you are getting out in the backcountry, consider making a post on the MIN (Mountain Information Network).

Confidence

Low

Snowpack Summary

Recent snow ( 15 to 30 cm ) combined with moderate to strong wind have formed wind slabs on leeward slopes. Expect to find soft snow in sheltered areas. A layer of weak, feathery crystals (surface hoar) may be found 30 to 50 cm down.

A 2 to 10 cm thick rain crust can be found down 50 to 100 cm at 1400 m and below.

At treeline we expect a snow depth of 250 cm or more. Snowpack depth tapers with elevation to around 50 cm at valley bottoms.

Many early season hazards are just below the surface below treeline.

Weather Summary

Sunday Night
Cloudy. 5 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Monday
Cloudy. 10 to 20 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -6 °C.

Tuesday
Partly cloudy. 5 cm of snow. 10 to 20 km/h west ridgetop wind. Treeline temperature -12 °C.

Wednesday
Partly cloudy. Up to 8 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -20 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Shooting cracks, whumpfs, and recent avalanches are strong indicators of an unstable snowpack.
  • Be cautious of buried obstacles, especially below treeline.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.

Régions couvertes