Avalanche forecast

Jasper

Jan 4 – 5, 2014Parks Canada
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Archived · expired 13 years ago

Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Assess your line very carefully and be mindful for rocks and vegetation buried under the new snow.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Multiple wind slab layers at the top of the snowpack can be triggered and may step down to the deeper instability at the bottom of the snow pack.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Up to 30cm of new storm snow is not yet bonded to the old snowpack.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    Triggering this layer from a shallow area is possible and would have high consequences in terrain features of any size.

Weather Forecast

A return to colder conditions and only a few centimeters of snow is forecast for the next few days. This will do little to change the current avalanche conditions.

Snowpack Summary

Up to 30cm of new storm snow now overlies existing wind slabs. Strong supportive mid pack at TL and above lies on a very weak faceted basal layer. Below tree line the snow pack has very little support except in isolated open areas where wind slabs may exist.

Avalanche Summary

Road patrols in the forecast area observed a size 2 storm slab at TL and sloughing from steep south facing terrain.

Confidence

Regions covered