Avalanche forecast

Banff Yoho Kootenay

Nov 29 – 30, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Avalanche activity on this layer has tapered, but there are likely a few pockets or features of concern in the alpine.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    In the past week there have been avalanches on this layer as it's now down 50-90 cm depending where you are.

Weather Forecast

Low pressure moving in tonight bringing 4 days of unsettled weather.  Expect 2-4 tonight, 10-15 along the divide tomorrow, 2-4 east.  Mod SW wind. Could see some inversion as the warmer air to the west rides over the cooler air to the east.

Snowpack Summary

Surface hoar development 6-8 mm at treeline.  Average snowpack depths at treeline are 90cm. Snowpack stability tests show mod shears at storm snow interface down 30-40 cm, and mod to hard shears on the Nov 6th crust in the bottom third of the pack.

Avalanche Summary

No reported or observed avalanches today.

Confidence

Intensity of incoming weather systems is uncertain

Regions covered