Bulletin d’avalanche

Jasper

Dec 25 – 26, 2012Parks Canada
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Archivé · expiré 14 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

Happy holidays.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Thursday's 10 cm and Sunday's 8cm of snow with little wind has buried the preexisting wind slabs. Winds have shifted from S to N yet remain in light range. Watch for reverse loading patterns from local terrain influences.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    2–4
    The strong mid-pack above this weakness is slowly loosing its strength. Shallow snow pack areas are potential trigger spots. Consequences would be severe if initiated.

Weather Forecast

Temperature inversion will continue. Weather not expected to change next few days. Expect mainly sunny, perhaps some very light flurries, and light yet cold North winds.

Snowpack Summary

Thursday's 10 cm and another 8cm on Sunday has buried previous wind slabs at tree line and above. The mid-pack remains supportive however expect it to be loosing strength in shallow locations as facetting process continues.

Avalanche Summary

Friday's avalanche control work at the Icefields released several loose size 2 avalanches in thin steep snowpack areas below treeline. Natural avalanches have been limited to similar characteristics, steep, rocky, thin areas creating loose avalanches.

Confidence

The weather pattern is stable

Régions couvertes