Bulletin d’avalanche

Jasper

Feb 19 – 20, 2015Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

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

Careful with increasing solar inputs Cornices are large and looming-give them a wide berth.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Caution in shallow and unsupported areas where wind slab has formed.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    Cornice failures or skier travel in shallow snowpack areas are likely ways to trigger this deep weakness in the snowpack.

Weather Forecast

Flurries expected Thursday and Friday though not expected to amount to much.  Above seasonal temperatures are expected and rain could fall in the valley bottoms.

Snowpack Summary

Surface hoar continues to grow at all elevations.  Up to 50cm of settled snow overlies a variety of crusts and provides good travel.  These firmer upper layers are resting on 50-75cm of weak, poorly bonded faceted snow crystals. Cornice drops and step downs could trigger large avalanches in the alpine.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Track of incoming weather systems is uncertain on Thursday

Régions couvertes