Bulletin d’avalanche

South Coast Inland

Dec 28, 2016Avalanche Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Watch for signs of recent wind loading in exposed terrain. Wind slabs are expected to be reactive to human triggering on Wednesday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    New wind slabs are expected to be reactive to human triggering on Wednesday. Ongoing strong southerly winds have been loading leeward and cross loaded terrain features in wind exposed terrain.

Confidence

Moderate - Intensity of incoming weather systems is uncertain on Thursday

Weather Forecast

Lingering flurries are expected on Wednesday morning and sunny breaks are possible in the afternoon. Alpine wind is forecast to be moderate from the west to northwest direction and freezing levels are expected to reach around 800 m. The next storm front is forecast to arrive Wednesday overnight. 10-20cm of new snowfall is forecast by Thursday evening. Alpine wind is forecast to be strong from the southwest and freezing levels are forecast to remain around 800 m. Friday is currently forecast to be dry and sunny.

Avalanche Summary

No new avalanches have been reported from the region in several days. On Wednesday, wind slabs are expected to be the primary concern. Ongoing strong southerly winds are expected to be redistributing the 10-20 cm of new snow from Tuesday.

Snowpack Summary

10-20 cm of new snow has accumulated since Monday. This new snow sits over a variable interface which consists of wind affected surfaces, faceted (sugary) snow, or surface hoar. The surface hoar has been observed up to 5 mm in size in the Duffey Lake area. A thin sun crust may also exist in the upper snowpack and was reported around Coquihalla area over the weekend. Recently strong southerly winds have formed new wind slabs in leeward and cross loaded features in wind exposed terrain.  The mid and lower snowpack are generally expected to be well settled and stable.

Régions couvertes