Bulletin d’avalanche

Banff Yoho Kootenay

Jan 5 – 6, 2012Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Thu
Fri
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Another warm, wet system is pushing into the Rockies and we may receive up to 20cm in the alpine overnight, accompanied by strong west winds. This will likely result in a natural avalanche cycle in the alpine and open tree-line features on Thursday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    Wind slabs up to 1m deep can be triggered by a person in avalanche terrain. Pay attention to the hardness of the slab; the greater the hardness, the greater the propagation potential. This means large avalanches are possible if you trigger something.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    The basal facets/depth hoar are becoming less reactive in field tests, but If a wind slab is initiated, it may have enough volume to step down to create larger avalanches. Other trigger points will be thin, cross-loaded features and ridge crests.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Thursday

Régions couvertes