Avalanche forecast

Banff Yoho Kootenay

Apr 10 – 11, 2012Parks Canada
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Avalanche danger

Thu
Fri
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Freezing levels are forecast to rise to 3200m on wed PM. A weak overnight freeze, means that stability will deteriorate early. Back to winter on Thurs, with10-15cm of snow in the ALP/TL with cooling temps. Start and finish early on wed. IJ

Avalanche problems

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Loose wet slides can be expected on solar aspects, especially in the PM. These slides have the potential to trigger a large slab avalanche on one of the deeper weak layers, and there has been evidence of this occurring in the last few days.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–4
    Both the Valentines surface hoar and the basal facets are still causing isolated slides. Areas of most concern are terrain with weak, shallow and variable snow-packs, especially in the PM sun. Large triggers like cornices may also trigger this layer.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain

Regions covered