Bulletin d’avalanche

Kananaskis

Dec 28 – 29, 2015Alberta Parks
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Archivé · expiré 11 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Recently formed wind slabs in Alpine and Treeline elevations are a concern in steep terrain. Look to sheltered locations for better quality skiing.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Wind slabs are found in lee and cross-loaded terrain at Treeline and above. These slabs are sensitive to human triggering in steeper terrain and a small avalanche cycle associated with this problem has occurred over the past 48 hours.

Confidence

High

Weather Forecast

Tuesday will be mainly cloudy with no precipitation expected. Alpine temperatures should reach a high of -10 °C. Winds will be light from the NE. As the week progresses a return to sunny conditions is expected, with no precipitation in the forecast.

Avalanche Summary

Nothing new observed today, but visibility was limited. Yesterday several slab avalanches up to size 1.5 were observed on N and E aspects in steep Alpine terrain between 2400 and 2600m. These slabs were 10 to 20cm thick and generally did not run far.

Snowpack Summary

Trace to 3cm of new snow overnight has done little to change the character of the snowpack. Wind slabs are found in lee and cross-loaded terrain in the Alpine and Treeline elevation bands. These slabs were observed to be cracking with skier traffic yesterday and several naturally triggered avalanches have occurred over the past 48hrs. The persistent weak layer from Dec 4th is buried between 30 and 60cm at Treeline and below, but has not been reactive for some time.

Régions couvertes