Bulletin d’avalanche

Jasper

Dec 20 – 21, 2013Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Early season conditions persist. Pay attention to wind loaded features and watch for hazards lurking below the surface.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Increased winds from the south and west have contributed to a new load on alpine lees. 

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    A patchy rain crust continues to linger making stability suspect on features that hold early season snow.

Weather Forecast

Winds as switching to southerly and bring light snow across the area for the next couple days. Temperatures will be seasonal, between -10 and -20.

Snowpack Summary

Wind transport has been evident at alpine ridge crests. Any windslab development on lee terrain features will be over-lie extremely weak basal layers.

Avalanche Summary

A size 2.5 slab occurred today at 2500m on a south easterly slope near the Whirlpool drainage. From a distance this,  slab looked  like a thin windslab over basal facets and ran to ground.  While there is variable snow distribution on the landscape, there is still potential for slab avalanches to occur in isolated terrain.

Confidence

Intensity of incoming weather systems is uncertain

Régions couvertes