Avalanche forecast

Banff Yoho Kootenay

Apr 4 – 5, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Fri
Sat
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

The winter that keeps giving. 20cm of new snow by tomorrow. There has been just enough spring-like weather to create crusts on solar aspects, but not enough to create the usual bomber spring snow pack. Travel as though it is still winter!

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    New wind slabs are forming in the alpine and at tree-line, on top of the storm snow slabs formed the last few days. These slabs can be easily triggered and may result in an avalanche stepping down to deeper weaknesses.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–4
    The Valentines surface hoar layer and the weak basal depth hoar have both been sliding layers for large avalanches over the last several days. Steep unsupported slopes, thin rocky areas and steep solar aspects are the most likely areas to trigger.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Regions covered