Avalanche forecast

Jasper

Mar 21, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

Not all areas have enough snow depth or bridging strength to prevent a skier from triggering the buried surface hoar.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–4
    The buried surface hoar layer remains a concern in areas that have not avalanched following the recent March snow storms. Solar effect is a likely trigger in the afternoon on west through south facing terrain.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Primarily southwest moderate alpine winds continue to form slabs on lee aspects, but variable winds during the recent snow storms have reverse loaded some features. Smaller windslab avalanches may step down to deeper instabilities.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Surface snow is responding to the strong solar radiation effect that happens in March and April. Ice climbers should also be wary of large pillows of snow still overhanging routes on solar aspects.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain

Regions covered