Bulletin d’avalanche

Kananaskis

Dec 8 – 9, 2014Alberta Parks
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Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible
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Points saillants

Deep persistent slabs have become more trigger-able with the recent warming. The November rain crust will be a problem for some time to come. Keep an eye on the approaching warm, windy and wet storm.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–4
    Wind slabs are prominent in the Alpine and open areas at Treeline. These slabs could step down to the deep persistent slab causing a large avalanche.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–4
    Recent warming has created a more cohesive slab over the November rain crust. Stability tests today indicate that human-triggering is likely.

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

Warm and windy for the next few days. Tuesday will see alpine temperatures climbing to -2 celsius with light flurries and SW winds over 100km/h. Wednesday will be similar with more precipitation in the forecast. Unfortunately some of the precipitation may fall as rain below 2100m.

Avalanche Summary

Nothing new.

Snowpack Summary

Surface hoar was observed in sheltered areas today. Recent warm temperatures have settled the snowpack creating a more cohesive slab above the November rain crust at treeline and below. Alpine areas are widely wind effected with widespread wind slabs. A layer of facets above the November rain crust is producing consistent moderate shears in snowpack stability tests. Test profile today at 2300m on a SE aspect on a 30 degree slope produced moderate Compression Tests and moderate Extended Column Tests down 65 to 70cm in the facets above the November crust.

Régions couvertes