Boletín de aludes

Banff Yoho Kootenay

Dec 7 – 8, 2015Parks Canada
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Archivado · caducó 11 years ago

Peligro de aludes

Mon
Tue
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Stormy weather is expected to affect the region over the next few days.  Slab formation has begun over the December 3 interface and we will be closely watching how the incoming snow bonds to this highly variable layer.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Small wind slabs are forming in the immediate lee of prominent features and ridgelines. Areas further to the north have seen, and expected to see, larger snow inputs so greater slab development can be expected in those regions.

Weather Forecast

A series of systems will bring moderate amounts of precip in several pulses to the region through Thursday. Moderate to strong westerly winds will continue in the alpine and freezing levels look like they should peak Tuesday with the influence of the south westerly flow.

Snowpack Summary

The Dec 3 interface is now buried by 10-20cm in the alpine. This interface consists of facets BTL, widespread wind effect above TL, suncrusts on steep S and SW aspects, and surface hoar up to 20 mm found in some locations up to 2000m. South and Southwest winds in the moderate range are building soft slabs in the lee of alpine features-.

Avalanche Summary

Small windslabs local to ridgecrests are reactive to skier traffic in the alpine and at treeline.

Confidence

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

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