Bulletin d’avalanche

South Rockies

Feb 28 – Mar 1, 2013Avalanche Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–4
    Recent winds have created slabs in the lee of terrain features.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–4

Avalanche Summary

Recent reports indicate a size 2 skier triggered avalanche off of a windloaded ridgeline feature running on a layer of facetted crystals. A subsequent size 1 avalanche was triggered nearby. This was in the Three Sisters area just north of Fernie.

Snowpack Summary

In protected areas up to 30cm of the most recent low density new snow sits on the surface. This has been shifted onto lee slopes by strong west and southwest winds. New storm slabs, cornices and wind slabs are likely. Mid and lower snowpack layers are generally well settled and stable.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain for the entire period

Weather Forecast

Synopsis: The precipitation associated with a Pineapple Express weather system approaching the province Friday is not forecast to affect the region. However, the associated warm temperatures and wind will. Friday: Light precipitation, strong gusting to intense westerly winds and alpine temperatures -3. Freezing level to 2200m.Saturday: Light precipitation, moderate to strong west winds, and freezing level of 2200m. Sunday: Light precipitation, light southeast winds, and freezing level of 1800m.

Régions couvertes