Bulletin d’avalanche

Kootenay Boundary

Dec 30 – 31, 2012Avalanche 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

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–4
    Wind slabs may be found behind ridges, ribs and gully walls. In specific thin snowpack areas, it may be possible for a wind slab to trigger a failure on a deeply buried weak layer.

Confidence

Good

Weather Forecast

Monday-Wednesday: Expect benign weather with light winds, alpine temperatures around -5 and no precipitation.

Avalanche Summary

 Small skier-triggered wind slabs and loose snow sluffing have been reported.

Snowpack Summary

Wind slabs may be found behind terrain breaks such as ridges, ribs and gully walls. A generally settled upper snowpack overlies the late November surface hoar, buried down 115-130 cm. Recent test results are inconsistent, but an avalanche failed on this layer in the Rossland Range on Christmas Eve. A deeply buried crust/facet layer near the base of the snowpack is considered dormant. Although unlikely, there is a lingering possibility of triggering a deep avalanche, especially from thin snowpack areas.

Régions couvertes