Bulletin d’avalanche

Jasper

Dec 10 – 11, 2011Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

The thin wind slabs created by previous northerly winds are becoming more reactive especially on cross-loaded SW gulleys and bowls at treeline and above. Avoid being on or under terrain with these features.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Thin cross-loaded slopes at tree line and above are becoming more reactive. Several natural avalanches to size 2 were observed on these features with today's rise in temperatures.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–3
    These slabs are sitting over a weak basal facet layer. Most large avalanches that have been observed recently have been on this layer. The layer is most easily triggered from shallow areas especially along the edge of fatter slopes.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

on Saturday

Régions couvertes