Bulletin d’avalanche

South Coast

Mar 3 – 4, 2015Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

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

Watch for thin wind slabs in the alpine that could be problematic, especially in technical terrain.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    North and West winds have created stiff thin wind slabs. These slabs have been fairly stubborn, but you may be able to trigger one in steep and or convex terrain. Keep an eye out for large cornices which may fail without obvious rhyme or reason.

Confidence

Good

Weather Forecast

The ridge continues to dominate the weather pattern Wednesday. On Thursday a storm impacts the North Coast, but its not expected to have much effect on the South Coast. Wednesday: Clear skies. Light NW winds at treeline, Moderate NW winds at ridgetop. Freezing level rising to 1500m, returning to 900m overnight. No significant precipitation. Thursday: Broken cloud cover. Light W/NW winds at treeline, Moderate NW winds at ridgetop. Freezing level rising to 1700m, remaining at 1700m Thursday night. No significant precipitation. Friday: Broken cloud cover. Light W winds at treeline, moderate W winds at ridgetop. Freezing level holding at 1800m. No significant precipitation.

Avalanche Summary

No new avalanches were reported Saturday/Sunday/Monday.

Snowpack Summary

North and west winds (mainly from the north) have created isolated stiff wind slabs 5 to 10cm thick on lee slopes. On other slopes you may find tired old wind slabs, a sun crust on all solar aspects, surface hoar, surface facets, and/or up to 5 cm of soft snow over a widespread supportive rain crust in wind sheltered areas. The snowpack is generally strong and well settled. However, large cornices may become weak with daytime warming.

Régions couvertes