Boletín de aludes

Northwest Coastal

Dec 31, 2012 – Jan 1, 2013Avalanche Canada
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Archivado · caducó 14 years ago

Peligro de aludes

Wed
Thu
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Have a safe and fun new year! 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–5
    New windslabs exist and older buried wind slabs lie in the alpine and at treeline. Be aware that warm temperatures and sun radiation could act as a trigger in the afternoon on solar aspects.

Confidence

Fair

Weather Forecast

Monday night and Tuesday: The weak frontal systems weakens out and gives place to dryer conditions and moderate Westerly winds switching from the South on Tuesday. Broken cloud cover is expected. Temperatures are expected to be quite mild in the alpine afternoon due to an inversion (above freezing levels between 1100 m. and 2200 m.)  Wednesday: A new frontal system is arriving which could give considerable amounts of precipitation on the Northern part of the region (in the 20-25 cm range) with strong SW winds. Thursday: More moderate precipitation is expected to continue and looks like winds would slow down and temperatures warm up slightly.

Avalanche Summary

No new avalanches were observed recently.

Snowpack Summary

New wind slabs are suspected to be touchy on lee side of ridges in the alpine and at treeline, especially on solar aspects in the inversion altitude band. In sheltered areas, the new snow could hide older windslabs. The mid-pack is generally well settled. In sheltered areas and below treeline, 30 cm of low density snow overlies a stiffer base. Near the base of the snowpack, a crust/facet layer is still lingering but we have no recent information about its reactivity. I suspect that this weakness is unlikely to be triggered by a single person, but that it would remain possible with a very heavy load (e.g. cornice fall) or from a thin-spot trigger point.

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