Avalanche forecast

Banff Yoho Kootenay

Dec 28 – 29, 2011Parks Canada
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Avalanche danger

Wed
Thu
Alpine
4 · High
Treeline
3 · Considerable
Below
1 · Low
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Highlights

Ten to 15 mm of precip is forecast for Wednesday and another 10 mm for Thursday night and Friday. This new snow in combination with forecast strong winds will increase the avalanche hazard.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    The 20 cm of storm snow that fell on Christmas day has been redistributed by two days of mod to strong south and south west winds. Fresh wind slabs have been created in the alpine and open terrain at treeline.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    The basal facets still linger at the bottom of the snowpack. Although we have not seen any recent avalanche activity on this layer be aware that this interface could become active with fresh snow loads.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regions covered