Avalanche forecast

Jasper

Dec 29 – 30, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Thu
Fri
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
1 · Low
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Highlights

The storm that dropped over 20 cm in the Icefields area on Wednesday will slowly clear out by Thursday afternoon. Skiers and boarders should avoid steep loaded slopes to allow this new snow to settle and bond to the snow beneath it.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    These slabs have now been buried and added to by the recent storm snow and SW winds. Increased loading may increase the possibility of triggering this weakness.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2
    The 20 cm of snow that has fallen in the Icefields area was accompanied by strong SW winds creating slab conditions on lee slopes. It will take a few days for these new slabs to bond.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    This layer has not been active for a while now. It has now been loaded by the 20+ cm of new storm snow and continued SW winds. Big slopes that have not yet slide this winter should be avoided.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Thursday

Regions covered