Bulletin d’avalanche

Kananaskis

Apr 13 – 14, 2013Alberta Parks
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Archivé · expiré 13 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Up to 40cm of recent snow has formed storm slabs on N and E aspects, but Northerly winds are now forming slabs on S aspects as well. We have shifted back to winter and while ski quality is excellent, be cautious in wind loaded terrain.

Problèmes avalancheux

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–3
    Sluffing is occurring in steep terrain on all aspects. Be aware of overhead terrain.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–4
    Storm slabs between 30 and 60cm thick are present at and above treeline between in lee and cross-loaded features. Slabs are also developing on South aspects as winds increase from the North.

Confidence

Good

Weather Forecast

Winds will be strong from the North on Sunday and snow flurries will continue. New snow accumulations will likely be less than 10cm. Temperatures will be below seasonal with alpine values near -16.

Avalanche Summary

Several loose dry up to size 1.5 were observed in steep alpine terrain. A size 2.0 avalanche on a SE aspect of Hero's Knob occurred sometime in the past 24 to 36 hours, but obscured conditions made it difficult to determine the trigger and the age of the debris.

Snowpack Summary

Between 10 and 40cm of storm snow now lies on a variety of previous surfaces. This storm snow is settling rapidly and is sluffing in steep terrain at higher elevations. Storm slabs exist on N and E aspects at treeline and above, and slabs are also developing on South aspects due to increasing Northerly winds.

Régions couvertes