Boletín de aludes

Purcells

Nov 30 – Dec 1, 2013Avalanche Canada
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Archivado · caducó 13 years ago

Peligro de aludes

Mon
Tue
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Lo esencial

Avalanche danger is increasing as the storm moves into the region. The new storm snow may not bond to the recent buried weak layers.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    3–6
    The new load of storm snow may overload the deeply buried weak layer. Storms slabs that are in motion may trigger the deeply buried weak layer resulting in wide propagations and very large avalanches.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–4
    New storm slabs are developing above recently buried weak layers. Strong winds and forecast heavy snow falls may result in easy triggering from adjacent terrain features.

Confidence

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

Weather Forecast

Overnight and Sunday: Moderate to locally heavy precipitation overnight as the arctic front collides with Pacific moisture. Expect strong westerly winds ahead of the arctic air, and moderate northerly winds after the passage of the cold front.Monday: Precipitation should end during the day. Expect clearing skies and cold valley temperatures.Tuesday: Clear and cold with moderate Northeast winds.

Avalanche Summary

No recent avalanche activity has been reported. New storm slabs are expected to develop overnight. Storm slab avalanches may be easily triggered where recently buried weak layers exist. The new load of storm snow, or storm slabs in motion may cause avalanches to release on this crust layer. The most likely place you would trigger this layer is on smooth, planar, north facing slopes.

Snowpack Summary

New storm slabs are developing above weak surface layers of facetted crystals and melt/freeze crusts. These recently buried weak layers may not support the new load of storm snow that is forecast. The deeply buried early season crust continues to be a concern. There have been reports of weak sugary crystals at the crust interface that may create an easy sliding surface and allow for wide propagations.

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