Bulletin d’avalanche

South Rockies

Feb 26 – 27, 2013Avalanche Canada
Voir sur la carte
Archivé · expiré 14 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–4
    Recent winds created slabs in the lee of terrain features.

Confidence

Fair - Freezing levels are uncertain on Thursday

Weather Forecast

Wednesday: Possible sunny breaks with isolated flurries, winds moderate from the west and alpine temperatures -8. Freezing level rising to 1000m.Thursday: Light snow, winds moderate from the west and alpine temperatures of -6. Freezing level rising to 1300m.Friday: Light snow throughout the day, light southwesterly winds and alpine temperatures -5. Freezing level rising to 1800.

Avalanche Summary

Numerous loose dry avalanches (size 1.5) failed naturally (some with cornice fall as the trigger) and with skier traffic in steep terrain on Friday and Saturday. In the south-east of the region, a couple of size 2 slabs were triggered by explosives.

Snowpack Summary

10-30 cm of snow which fell on Friday added to recent snowfall above old surfaces including loose dry snow, old wind slabs and sun crusts. This recent snow has been shifted onto lee slopes by strong SW to NW winds. New storm slabs, cornices and wind slabs are likely. Mid and lower snowpack layers are generally well settled and stable.

Régions couvertes