Bulletin d’avalanche

Jasper

Dec 29 – 30, 2019Parks Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

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!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5

    SW moderate winds continue to develop windslab on lee slopes.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5

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

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    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

Régions couvertes