Bulletin d’avalanche

South Columbia

Jan 7 – 8, 2013Avalanche Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Wed
Thu
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

It is time to make conservative terrain choices, and avoid exposure to overhead hazard.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–5
    Storm slabs are developing on all aspects and elevations. As the storm slab becomes thicker it is expected to consolidate and become more reactive to human triggers. Wind slabs may also continue to develop at higher elevations.

Confidence

Fair - Forecast snowfall amounts are uncertain on Tuesday

Weather Forecast

Overnight and Tuesday: Strong Southwest winds and another 10-15 cms of snow by morning. The next stronger pulse of moisture should start by Tuesday late morning. Expect 15-20 cms with moderate Southerly winds by early evening.Wednesday: Another 15-20 cms with building Southwest winds and freezing levels rising up to about 1500 metres.Thursday: Flurries ending during the day as a ridge of high pressure moves into the region.

Avalanche Summary

Soft slabs are becoming reactive to light additional loads. Expect this problem to continue to become more reactive and result in larger avalanches as the storm slab develops.

Snowpack Summary

Some areas are reporting about 40 cms of storm snow above the surface hoar/surface faceting/sun crusts that were buried on January 4th. Where this slab is thicker, it has become reactive to skiers and riders. This new storm slab is expected to continue to develop due to forecast snow fall amounts. The mid-pack is strong, and deeply buried weak layers have not been reactive.

Régions couvertes