Boletín de aludes

Kootenay Boundary

Dec 21, 2016Avalanche Canada
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Archivado · caducó 10 years ago

Peligro de aludes

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

The wind is forecast to be strong Tuesday night into Wednesday. Plenty of new snow to redistribute into new wind slabs at tree line and alpine elevations

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    New snow combined with moderate to strong southwest winds have created slabs in the lee of terrain features

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    20-40 cm of new snow sits on top of a variety of potential weak sliding surfaces

Confidence

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

Weather Forecast

Wednesday: Isolated flurries / Moderate southwest wind / Alpine temperature -7Thursday: Scattered Flurries, accumulation 5cm / Moderate southwest wind / Alpine temperature -6 Friday: Flurries, accumulation 5-10cm / Light to moderate south wind / Alpine temperature -6

Avalanche Summary

Recent reports indicate avalanche activity from explosives control running on the storm snow old snow interface to size 2 at treeline and above. These are reported as both storm slab and wind slab avalanches.

Snowpack Summary

20-40 cm of new snow has buried previously formed windslabs, facets and surface hoar. Moderate to strong winds have loaded leeward features with new touchy wind slabs. A widespread crust that was buried in November is typically down 80-100cm. Recent tests show variable results with this persistent weakness. Some show results as hard and resistant and other show it may have the propensity to propagate large avalanches if triggered from thin rocky areas.

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