Bulletin d’avalanche

Kananaskis

Nov 20 – 21, 2013Alberta Parks
Voir sur la carte
Archivé · expiré 13 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Look for winds to pick up and increase slab development. A skier triggered Size 2 soft slab in the Tryst Chutes area on Wednesday AM resulted in some limb injuries to one skier - heads up out there as the weak basal layers cannot support much load.

Problèmes avalancheux

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–3
    Watch for loose dry sluffing out of steeper terrain. Now that greater amounts of snow are on the ground it will be even more important for Ice climbers to be aware of overhead terrain.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    Deeper and more cohesive storm slabs will continue to develop in Alpine/TL terrain with recent snow and winds. Winds are forecasted to continue to be in the moderate to strong range over the next 24-48 hours so we expect further slab development .

Confidence

Good

Weather Forecast

Winds increasing and temps will gradually increase with -12 in the valley bottoms on Thursday rising to -6 by Friday PM

Avalanche Summary

Numerous loose and slab avalanches up to Size 3 were observed on Wednesday AM - most had occurred during the storm event, 

Snowpack Summary

Tuesdays storm snow is slow to settle due to the cold temps.  Winds were much calmer than forecast in the AM on Wednesday but wind values are forecast to steadily increase over the next 24-48 hours.  Storm slabs will thicken and become more cohesive and subject to skier triggering.

Régions couvertes