Avalanche forecast

Jasper

Mar 29 – 30, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

15cm may arrive into Friday with a little more on Saturday plus slightly cooler temperatures and winds. Incrementally this may increase the danger rating particularly where slabs form on the slippery surface of previous formed melt-freeze crusts.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Southwest winds for the past 4 days continue to build windslabs on Northerly aspects. More snow arriving will incrementally add to this problem. The new snow may be resting on a slippery crust from earlier sun effect particularly on solar aspects.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–4
    The buried surface hoar layer 70-120cm down remains a concern in areas that have not avalanched. The layer is still being observed at treeline and below treeline locations yet layers are bridging it above. Cautious of shallow locations.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Cloud cover should be predominant the next few days reducing daytime heating. Still be cautious if the sun pokes out as activity will increase particularly on steep S or W aspect rock bluffs or gullies starting mid afternoon.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Friday

Regions covered