Avalanche forecast

Banff Yoho Kootenay

Feb 18 – 19, 2012Parks Canada
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Avalanche danger

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

4-6cm are forecast West of the divide, and less to the East. Only isolated areas in the alpine have enough of a slab over the Valentines weak layer to be of concern, but where they exist they will be sensitive to triggering. SH

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    The Valentines surface hoar, facets will be buried anywhere from 5 cm - 30cm where drifted in on the immediate lees of ridge crests. These wind slabs will be thicker West of the divide and will have a small additional load this weekend.

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2
    Large cornices on lee (mostly easterly) aspects still loom high overhead. Several large cornice collapses have been observed over the past week. The volume of cornice debris would be very detrimental to your day.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1
    In steep areas mainly West of the divide, watch out for new snow sloughing on surface hoar, facets or suncrust on steep solar aspects. This will increase with additional new snow.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Saturday

Regions covered