Bulletin d’avalanche

Banff Yoho Kootenay

Dec 31, 2011 – Jan 1, 2012Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

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

Avalanche control planned for Mt. Bosworth, Stephen and Field tomorrow mid-day. Please no recreation of any sort on these peaks tomorrow. LP

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–3
    Since Dec 24, storm snow amounts total 40 cm (Lake Louise), 55 (Sunshine) , 60 (Bow Summit). SW winds have created touchy slabs 60-150 cm thick. Natural avalanches continue with on-going wind loading. Winds will taper and skies will clear tomorrow.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    The December 10 surface hoar is down approximately 60-70 cm. The distribution of this layer is spotty but mostly on the west side of the Divide (Mt. Whymper, Takakaw Falls). Avoid steep walled gully features, or steeper open slopes.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–3
    Large windslab releases continue to step down into the basal weak facets creating large avalanches. Size 3 Natural over Sacre Blue climb on Rundle today, photos on the mountain conditions report.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Régions couvertes