Avalanche forecast

Jasper

Dec 2 – 3, 2012Parks Canada
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Avalanche danger

Sun
Mon
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Snow accumulations will vary greatly across the forecast area. Pay attention to windloading if windspeeds increase into the moderate range in the afternoons.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3
    A natural avalanche was "heard"  originating on steep unskiable terrain on a predominantly Northeasterly aspect in Hilda creek area. Pay particular attention to steep unsupported wind loaded slopes in the alpine.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    A persistent facetted weakness can be found around a mid-pack crust. There is low likelihood of natural avalanches occurring on this layer but we are watching as each small system deposits more snow load.

Weather Forecast

Light snowfalls will continue through Tuesday in the icefields area with accumulations up to 30+cm.  There will be less snow accumulations around the Jasper townsite.

Snowpack Summary

Hard test results were found at treeline on facets sandwiched between the two crusts in the icefields area. The crusts are deteriorating in this area.  Windslabs continue as the main concern. Winds had shifted to more Southerly flows by late afternoon.

Avalanche Summary

Poor visibility prevented any observations but an avalanche was heard in the Hilda creek area originating from steep unskiable alpine terrain which has a Northeasterly aspect.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Regions covered