Avalanche forecast

Banff Yoho Kootenay

Feb 12 – 13, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Sun
Mon
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
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Highlights

Monday afternoon a small system will deposit up to 10 cm of snow in the alpine. The danger will rise to moderate. Redistribution of the new will create windslabs in lee areas. This will cover up the once conspicuous surface hoar, take note.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Isolated wind slabs up to 100cm thick in the high alpine are still triggerable in steep terrain. Thinner snowpack areas on gully sidewalls and unsupported slopes will be most vulnerable.

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    Strong winds from earlier in the month have created large cornices on lee (mostly easterly) aspects. Several large cornice collapses have been observed over the past week. These cornices could be a big enough to trigger a deep slab.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Monday

Regions covered