Avalanche forecast

Banff Yoho Kootenay

Dec 21 – 22, 2011Parks Canada
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Avalanche danger

Wed
Thu
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Avalanche control is planned for Mounts Bourgeau and Stephen on Wednesday, December 21. Please no skiing or climbing in these areas.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Strong westerly winds today and yesterday redistributed Sundays storm snow and formed fresh wind slabs in the alpine and treeline elevations. Conservative decision making is required on wind affected slopes.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    There is still concern for riders hitting the weak spot and triggering a full depth release on basal facets. A rider triggered a size 2.5 avalanche on this layer in the Lake Louise backcountry on Sunday. See the facebook link below for pictures.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable

Regions covered