Bulletin d’avalanche

Jasper

Jan 31 – Feb 1, 2014Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

The weak basal layer could still be triggered from shallow or rocky features so use caution in your choice of terrain.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Strong northerly winds have redistributed snow onto isolated locations at treeline and alpine elevations.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    This layer is now bridged by a strong mid and upper snowpack but could still be triggered from shallow or rocky terrain.

Weather Forecast

Remaining cold with the odd isolated flurry of snow.

Snowpack Summary

Previous wind slabs are providing bridging strength over a weak basal facet layer at treeline and alpine elevations. Extensive scouring of the snowpack has occurred in the high alpine. Last nights snow is giving dust on crust conditions and soft slabs in sheltered locations.

Avalanche Summary

Field teams observed three size 2 slab avalanches that occurred in the last 12 hours on southerly aspects at treeline. These had been triggered by last nights snow and strong northerly winds redistributing snow onto the existing surface hoar/facet layer.

Confidence

Due to the number of field observations on Thursday

Régions couvertes