Bulletin d’avalanche

South Rockies

Dec 11 – 12, 2014Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

This bulletin was published using very limited field data. You can help by using the new Mountain Information Network. For more info, check out this blog post: http://www.avalanche.ca/blogs/VIYBuScAAJdbdqPz/m-i-n-intro

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    Warm temperatures may spark renewed destructive avalanche activity on weak layers near the base of the snowpack. These weak layers are more likely to be found at higher elevations, and may surprise with nasty consequences.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Continued warming may trigger more loose wet avalanche activity, especially in areas where loose snow overrides a hard crust.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Generally overcast skies are forecast for Friday with moderate to strong southwest winds and freezing levels at about 1800m. On Saturday, up to 15cm of snow is expected with light to moderate variable winds and freezing levels at about 1300m. By Sunday the region will be under a dry ridge of high pressure with mainly clear skies, light northwest winds, and freezing levels near valley bottom.

Avalanche Summary

Loose wet avalanches to size 1.5 were observed on Wednesday in the Elk Valley North area between 1600 and 2000m. No other avalanches were reported. If you have any observations you'd like to share, please check out the new Mountain Information Network. For details, check out: https://avalanche.ca/blogs/VIYBuScAAJdbdqPz/m-i-n-intro

Snowpack Summary

Recent warming suggests snow surfaces are likely moist or wet at most elevations. There is at least one, maybe more, problematic layers in the mid and lower snowpack. About 90cm of settled snow overlies a weak layer of facets and crusts which formed during November's dry spell. Not much is known about the reactivity of this layer, nor the slab above it, but I'd assume it exists in most alpine terrain.

Régions couvertes