Avalanche forecast

Jasper

Mar 26 – 27, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

Monitor the degree of overnight freezing as it relates to how quickly afternoon temperatures will have a destabilizing effect on the snowpack. It is the time of year to get an early start and be back in time for afternoon siesta.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Southwest winds continue to build windslabs and cornices on Northerly aspects. Recent avalanches have started from rock bluffs or cornice failures and have triggered deeper weak layers.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–4
    The buried surface hoar layer 50-120cm down remains a concern in areas that have not avalanched. Whumphing is still being observed on North shaded glades below treeline. Be cautious of this layer as triggering it would be high consequence.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    With extended sunny periods, expect to see loose snow avalanches originating from steep rock bluffs or gullies. Ice climbers need to start and end early.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain

Regions covered