Avalanche forecast

Banff Yoho Kootenay

Dec 24 – 25, 2011Parks Canada
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Avalanche danger

Sat
Sun
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

The chance of triggering a large avalanche at higher elevations is decreasing, but the consequences of triggering one is large. Its still not a good time to go into bigger terrain. A pulse of strong wind and snow Sunday may elevate the hazard. SH

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Thin windslabs formed from previous strong winds can be triggered in steep open areas. In some cases this may provide enough load to step down to the deeper basal layers to cause larger avalanches.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Light loads can still cause slides on the basal depth hoar/October rain crust. Trigger points are thin areas in steeper terrain, where fractures can spread to thicker areas. Deeper snow packs with even distribution will be less prone to triggering.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

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

Regions covered