Bulletin d’avalanche

South Coast

Nov 30 – Dec 1, 2015Avalanche Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Wed
Thu
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Changing conditions: snow and strong winds are making a good recipe for avalanches.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Snow and wind are likely to build slabs on a variety of slopes. I expect the size and likelihood of these to increase throughout the week.

Confidence

Fair - Due to the number of field observations

Weather Forecast

A series of low pressure systems is forecast to bring heavy precipitation, strong southerly winds and rising freezing levels. On Tuesday, around 10 cm snow is expected (locally 20 cm around the Coquihalla). Overnight, another 15-30 cm is forecast, before a lull on Wednesday. On Wednesday night and Thursday, a possible atmospheric river is expected to bring 10-30 mm of precipitation with the freezing level rising to around 1900 m. Winds are strong to gale from the south. For more details check out avalanche.ca/weather

Avalanche Summary

No recent avalanches have been reported.

Snowpack Summary

Forecast storm snow is likely to build slabs, which may bond poorly to the current cornucopia of surfaces including hard slabs, crusts, facets and large surface hoar crystals. The snowpack is highly variable across different aspects and elevations. There is anywhere from 30-150 cm on the ground. Previous northerly outflow winds scoured upwind slopes back to a firm crust, and created wind slabs on lee aspects, which are gradually gaining strength. Shallow snowpack areas may be rotten (facetted).

Régions couvertes