Bulletin d’avalanche

Sea To Sky

Feb 18 – 19, 2012Avalanche Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–4
    Strong winds and heavy snowfall have created new and reactive wind slabs at treeline and in the alpine.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–4
    Watch for storm slab activity on steep, unsupported terrain features. They will be especially reactive where they exist in combination with buried crusts.

Confidence

Good

Weather Forecast

Sunday: Trace amounts of snow with some clearing / light northwest winds / freezing level @ 900m Monday: trace amounts of snow / moderate westerly winds / freezing level @ 800m Tuesday: trace amounts of snow / strong northwest winds / freezing level @ 1100m

Avalanche Summary

Widespread natural, human triggered, and explosive triggered avalanche activity was observed in the Whistler area on Saturday. The avalanches were up to size 2 and occurred in response to Friday night's storm.

Snowpack Summary

Heavy snowfall and strong winds on Friday night created new wind and storm slabs and continued to cover an assortment of old snow surfaces that were first buried a little over a week ago. These old surfaces are now about 45cm down and include crusts that exist on all aspects at lower elevations and on steep solar aspects higher up. There are also surface facets on northern aspects where colder temperatures have persisted. Facets and spotty surface hoar may also exist in combination with crusts. The mid and lower snowpack are strong and well settled. The average treeline snowpack depth is about 240cm.

Régions couvertes