Boletín de aludes

Banff Yoho Kootenay

Nov 16 – 17, 2019Parks Canada
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Archivado · caducó 7 years ago

Peligro de aludes

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

Skier accidental in the Louise region today, see avalanche summary for details.

At this point, we are uncertain about the incoming snow and wind Sunday. Stay tuned!

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–1.5

    Watch for wind slabs in lee areas in the alpine.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Reactive today in the Louise area (see avalanche summary) on basal facets and the October crust. Pending on the intensity of the incoming system on Sunday, we expect this layer to become more active.

Weather Forecast

Saturday - light flurries and slightly cooler temperatures than Friday should help to improve the hazard slightly.

Sunday - models range from 10-30 cm predicted with Moderate to strong SW winds along the Divide and West. If we see large accumulations, expect the hazard to rise on Sunday.

Snowpack Summary

10-20 cm of settled snow sits on the Nov 8 crust and a variety of old wind slabs in the alpine. Faceting observed around the Oct crust and at the ground showing easy sudden collapses & propagation propensity in deeper snowpacks around Louise (90 cm). Treeline snow depths range from 50-80 cm, and up to 110 cm wind loaded pockets in the alpine.

Avalanche Summary

A skier accidental size 2 slide failed on facets on the ground on a convex feature in Pipestone Bowl, near the Lake Louise Ski area. Size 1.5 natural on basal facets NE aspect at 2400 m, base of Whitehorn gullies. No other

Confidence

Intensity of incoming weather systems is uncertain on Sunday

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