Avalanche forecast

Banff Yoho Kootenay

Dec 17 – 18, 2011Parks Canada
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Avalanche danger

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

We may receive 10-20cm of snow with the incoming storm Friday night and Saturday. Coupled with strong westerly winds in the alpine, it may not be the weekend for travelling up high if the larger amount of snow falls!

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    There are a few fresh thin wind slabs on immediate lee features in the alpine that can be easily triggered. If we receive the 10-20cm of snow and strong winds that are in the models, the surface slabs will be bigger and pack more consequence.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    In many areas the hard wind slab on wind loaded features is bridging the weak facets and depth hoar at the base. There is still a possibility of human triggering a large full depth avalanche on any steep slope.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regions covered