Bulletin d’avalanche

Jasper

Feb 13 – 14, 2017Parks Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

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

Avalanche control is planned for the Icefields Parkway and Maligne Lake Road on Monday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–3
    Extreme SW winds building windslab with recent storm snow.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–3
    Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    30-40cm of storm snow has formed a touchy storm slab.

Weather Forecast

Winds easing to light on Monday with clear skies and alpine temperatures approaching 0.  Warm daytime temperatures continuing until the middle of the week then maybe some valley bottom rain showers???

Snowpack Summary

Extreme winds building windslab likely down slope of ridge-lines and on cross-loaded gulley features. A reactive storm slab can be found in sheltered locations at tree-line and on most slopes below tree-line. The new slabs and storm snow is sitting on several touchy surface hoar and facet layers over a weak base.

Avalanche Summary

Several avalanches to size 2 were observed on west facing cross-loaded features in the alpine today.

Confidence

on Monday

Régions couvertes