Bulletin d’avalanche

Banff Yoho Kootenay

Nov 29 – 30, 2011Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Cool temps with light snow and winds will prevail until the arctic air reaches us on Wed PM. This will decrease natural avalanche activity, however the snowpack is still primed for human triggering, as seen with results from avalanche control today.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    2–3
    Yesterdays warm, wet storm created new windslabs which sit on top of a weak snowpack. These windslabs are very susceptible to human triggering and will likely step down to the basal depth hoar.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    2–4
    60-100cm of recent storm snow sits over weak basal depth hoar. Although, the natural cycle has passed, this layer is still reactive to light loads. An avalanche control mission today produced full depth avalanches to size 3 showing wide propagation

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Régions couvertes