Bulletin d’avalanche

Northwest Coastal

Nov 15 – 16, 2011Avalanche Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

This bulletin is based on limited data. Local variation in conditions and danger levels are likely to exist. To produce more accurate forecasts, we need information. Please send an email to [email protected].

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–4
    Steep unsupported slopes.

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–5
    Near ridgecrests and terrain breaks, and in cross-loaded gullies.

Confidence

Poor - Due to limited field observationsfor the entire period

Weather Forecast

Wednesday: 20-30cm of new snow with freezing levels around 800m and strong southerly winds.Thursday: Another 5-10cm of new snow expected with freezing levels dropping to valley bottoms and light to moderate southwest winds.Friday: Relatively clear, dry and calm weather is expected.

Avalanche Summary

Recent reports include natural slab avalanches up to 60cm thick triggered by heavy loading during storms. The possibility for natural and human-triggered wind and storm slabs is expected to remain for the forecast period.

Snowpack Summary

Total snowpack depth is around180 cm for most treeline areas and over 2 metres in the alpine. Whumpfing, cracking, and easy shears were found within and under the 40-50cm of recent storm snow. The mid and lower snowpack is generally well settled and strong, with an old rain crust near the ground.

Régions couvertes