Bulletin d’avalanche

Banff Yoho Kootenay

Feb 21 – 22, 2014Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué

Points saillants

The natural avalanche cycle is over, however skier triggered avalanches are happening daily. Now is the time to be very conservative in the back-country.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–3
    Continued SW winds have created fresh wind slabs in the alpine
  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–3
    A poor bond still exists between the storm snow and the Feb 10 interface. This interface is reactive to skier triggering. (see avalanche details)

Weather Forecast

Friday will be cloudy with isolated flurries. High temperatures in the alpine near -12. Ridge top winds west 10-30 Kph

Snowpack Summary

30 -70 cm of recent storm snow is settling and overrides the Feb 10th interface. A poor bond persists at this interface and many avalanches have been observed on this layer over the past week. Recent SW winds have created wind slabs in lee alpine terrain. These wind slabs are easily triggered and often step down to the Feb 10th interface.

Avalanche Summary

The natural avalanche cycle seems to have subsided, however skier triggered avalanches are still happening regularly. Several skier triggered avalanches (up to class 2) were reported in the Lake Louise on Thursday. Two skier remotes were reported on the moraine approach to Peyto Glacier on Wednesday.

Confidence

Régions couvertes