Avalanche forecast

Banff Yoho Kootenay

Dec 10 – 11, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

The chance of human triggering will continue to decrease with a long period of cool weather and little precipitation forecast through next week. Facetting and slow weakening will be the next long term trend for the snowpack. JBW

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    2–3
    Hard wind slabs exist at treeline and above. These slabs can still be triggered on steep open slopes. It is likely that any slab will immediately step down to the weak base. Choose moderate slope angles & low consequence terrain.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    The weak base of depth hoar and facets is bridged by hard wind slabs and less likely to be triggered, however, skier triggered and natural full depth avalanches are still a possibility.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regions covered