Bulletin d’avalanche

Jasper

Dec 22 – 23, 2013Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Travel below tree line continues to be frustrating because of the weak unsupported snowpack. Early season hazards exist.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    The wind slab is highly variable across all slopes from breakable to bullet proof. Watch for continued loading in alpine features above ice climbs and skier terrain.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Avalanche activity continues to be sporadic on this layer. Watch for continued loading in alpine features above ice climbs and skier terrain.

Weather Forecast

Returning to more seasonal temperatures and light snow with little accumulation.

Snowpack Summary

Variable snow distribution at treeline and above. Wind slabs are continuing to develop in lee terrain features. Wind slab and a mainly facetted snowpack overlies October 27 rain crust which is distributed sporadically through the forecast area. Basal facets and depth hoar to ground.

Avalanche Summary

Today we observed 2 size 3 avalanches on an east facing cross-loaded alpine bowl near Mt. Saskatchewan/Wilson area,  2 size 2.5 on a similar aspect in the Winston Churchill range. All appeared to have been triggered with continued loading and ran on the Oct crust.

Confidence

Régions couvertes