Bulletin d’avalanche

South Columbia

Apr 14 – 15, 2017Avalanche Canada
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Archivé · expiré 9 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

The key weather factors to keep your eye on this weekend will be the sunshine accompanied by rising freezing levels. Solar radiation is a common trigger for cornices which is currently our primary concern.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Lingering wind slabs may still be reactive to human triggers in isolated locations.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Minimize exposure to slopes with large cornices overhead when it is cool and cloudy and completely avoid them if it is warm and/or sunny.

Confidence

High -

Weather Forecast

SATURDAY: Mix of sun and cloud. Light southwesterly ridgetop winds. Freezing level around 1600m.SUNDAY: Sunny. Light southerly ridgetop winds. Freezing level rising to around 1900m.MONDAY: Mix of sun and cloud. Light southwesterly ridgetop winds. Freezing level hovering around 1900m.

Avalanche Summary

Two natural and human triggered wind slab avalanches up to size 2.5 were reported in this region on Thursday. Wind slabs may continue to linger in the alpine but the key weather factor to keep your eye on this weekend will be the sunshine. Solar radiation is a common trigger for cornices which is currently our primary concern due to their potential to trigger large avalanches.

Snowpack Summary

Recent snow and wind have formed wind slabs in the alpine on a variety of aspects caused by shifting wind directions. Cornices are large, looming, and the primary concern due to their potential to trigger large avalanches on facets at the bottom of the snowpack.

Régions couvertes