Bulletin d’avalanche

Banff Yoho Kootenay

Dec 21 – 22, 2011Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

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

Avalanche control is planned for Mounts Bourgeau and Stephen on Wednesday, December 21. Please no skiing or climbing in these areas.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Strong westerly winds today and yesterday redistributed Sundays storm snow and formed fresh wind slabs in the alpine and treeline elevations. Conservative decision making is required on wind affected slopes.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    There is still concern for riders hitting the weak spot and triggering a full depth release on basal facets. A rider triggered a size 2.5 avalanche on this layer in the Lake Louise backcountry on Sunday. See the facebook link below for pictures.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable

Régions couvertes