Bulletin d’avalanche

Jasper

Dec 30 – 31, 2014Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Ice climbers should pay attention to slab development in cross loaded gullies. Skiers should look for and avoid fresh windslabs just below ridge crests that have a South facing aspect.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Northerly winds reverse loading cross-loaded gulley features and South sides of ridge crests.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    This weak layer exists below a strong mid-pack at treeline and sub-alpine elevations. Large loads such as a cornice collapse could trigger this deep persistent weakness. The cold temperatures will be having a facetting effect on shallow locations.

Weather Forecast

The weather will remain cold and clear to the end of the year and will start clouding over for New Year's eve. However, the clouds will be stingy and will produce only a light snowfall to bring in 2015. Winds will continue from the North for the next few days. More snow is expected into the weekend.

Snowpack Summary

North winds are forming new wind slabs by reverse loading S-SE aspects near ridge crests and cross-loaded gully features. A Shallow low density upper snowpack sits on a strong, supportive mid-pack which is bridging a weaker facet base.

Avalanche Summary

No new avalanche activity reported in the forecast area. There was good visibility into the alpine from Jasper to Saskatchewan crossing.

Confidence

The weather pattern is stable on Tuesday

Régions couvertes