Avalanche forecast

Jasper

Dec 29 – 30, 2019Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

Reports of great ski quality may tempt you to push into bigger lines.  The current snowpack is variable and weak with new windslabs creating further hazard.  Ski conservatively!

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2.5

    SW moderate winds continue to develop windslab on lee slopes.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–1.5

    Caution Ice climbers in confined features with steep walls holding dry loose snow

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3

    Whumphing observed on this weakness observed below treeline.  Large loads may trigger it.

Weather Forecast

Clear, warming and light winds expected Sunday.  Temperatures falling with increasing westerly winds and light flurries forecast for the beginning of the week.

CAA's Mountain Weather Forecast for more specific details.

Snowpack Summary

6-25mm Surface Hoar growing up to 2200m. Consistent Moderate SW winds for the past 48 hours have created wind slabs in lee features. These overlies a mosaic of buried wind slabs and facetted weak layers. Basal layers continue to develop into larger facets and depth hoar.

Avalanche Summary

No new observations along the Icefields Parkway or Maligne Road today.

Confidence

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

Regions covered