Avalanche forecast

Banff Yoho Kootenay

Nov 21 – 22, 2011Parks Canada
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Avalanche danger

Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

The temperature will rise late on Tues with accompanying snowfall (~15-20cm @ TL), confidence fair. Wind will remain light from SW. Danger rating will increase to CON Weds morning. Note: Surface Hoar currently on surface in isolated areas: Alp + TL.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2
    Wind slabs between 20 and 40cm deep are lingering in leeward terrain in the alpine. Although forecasted to be small in size, wind-slabs that are triggered by riders or climbers will likely result in injury rather than burial.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    The basal facets and depth hoar layer is between 30 and 50cm deep. This layer produced whumphing in flat terrain near Sunshine Village today. Snow pack tests on this layer produced easy results. Steep open features are to be treated with caution.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Track of incoming weather systems is uncertain on Wednesday

Regions covered