Avalanche forecast

Banff Yoho Kootenay

Apr 6 – 7, 2012Parks Canada
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Avalanche danger

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

Afternoon cloud & light NE winds will likely keep slopes cool again tomorrow. Expect a strong freeze tonight. Still a winter snowpack with active deep weaknesses. Be mindful of prolonged sun affect increasing the avalanche hazard. LP

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2
    Fresh wind slabs have been found in the alpine. Be extra careful in the immediate lees of alpine ridges, and on steep convex rolls.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    The recent storm snow (up to 35 cm in Kootenay) is sitting on several sun-crusts, which can provide a good sliding interface. Daytime heating & solar affect can increase the hazard on slopes overhead or on steeper terrain where buried crusts exist.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Both the basal facet layer and the Feb 12 surface hoar are still surprising us a with isolated large avalanches, some being triggered by skiers. The terrain of most concern are weak, shallow and rocky snowpack areas.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regions covered