Bulletin d’avalanche

Jasper

Mar 2 – 3, 2017Parks Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

The avalanche hazard will increase on Friday as a storm is predicted to bring up to 25 cm of snow with strong southerly winds. 

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Thin windslabs are building on lee aspects.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    Persistent slabs are buried under the light snow that has accumulated.  Be vigilant particularly in sheltered spots where buried surface hoar may be lurking.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Trigger possible from shallow spots.

Weather Forecast

Temperatures will warm slightly on Thursday as SW winds pick up.  Expecting up to 25 cm of snow through Friday with moderate to strong Southerly winds.  The storm eases on Saturday as snow turns to flight flurries and wind and temperatures drop.

Snowpack Summary

Thin windslab forming from Mod to Strong SW winds over previous windslabs and facets on alpine and open treeline slopes.  Below treeline is unsupportive  with a mix of weak facets and depth hoar.

Avalanche Summary

1 new size 2 slab avalanche observed out of steep terrain  on a NE aspect at 2400m off Mt. Kerkeslin.

Confidence

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

Régions couvertes