Avalanche forecast

Banff Yoho Kootenay

Apr 20 – 21, 2012Parks Canada
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Avalanche danger

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

Conditions are good while frozen, but large triggers such as cornices are still creating full depth releases on the basal depth hoar/October crust. A sharp rise in temperatures with freezing levels reaching 3000 metres by Monday will increase Danger.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    3–4
    With warm temperatures and high freezing levels the very large cornices are beginning to fall off. A size 3.5 cornice triggered avalanche was observed today in Kootenay that was 400m wide up to 4 metres deep and ran 1100 metres to the creek.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3
    Loose wet and some wet slab avalanches are running in lower elevations with daytime heating and solar effect. Be sure to travel only while frozen.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain on Monday

Regions covered