Avalanche forecast

Banff Yoho Kootenay

Mar 16 – 17, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Sun
Mon
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

We will see some flurries through the weekend with easing winds and freezing levels to 1700m. Conditions are slowly improving as bridging strength increases, but consequences will be high if you trigger a slide on the Valentines surface hoar. SH

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    The Valentines surface hoar layer has been less active over the last few days. The lack of activity may give some false security, but as it is now buried 70-100cm deep, any slope which gets triggered will produce large avalanches.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    10-30cm of storm snow has created slabs 20-40cm thick. These will be susceptible to human triggering in the short term, especially in steeper terrain. Warm temperatures have promoted settlement and bonding of these slabs to the surfaces below.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain on Saturday

Regions covered