Bulletin d’avalanche

Jasper

Jan 8 – 9, 2017Parks Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.

Weather Forecast

Cold and clear on Sunday.  Snow beginning late Sunday night and through Monday with 15 cm possible.  Winds are expected to be light during the storm then blow moderate from the NW on Tuesday as they bring back the cold dry air.  Cold, clear and dry through the rest of the week.

Snowpack Summary

The snowpack is shallow, faceted and weak. The Nov. crust can still be found about 30 cm from ground but is faceting into large depth hoar. The upper half of the snowpack has layers of wind slabs.

Avalanche Summary

Small loose dry avalanches were reported in the Maligne Lake area on Friday out of steep rock slab alpine features.  No avalanche patrol on Saturday.

Confidence

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

Régions couvertes