Bulletin d’avalanche

South Coast

Jan 18 – 19, 2015Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Give the recent snow a day or two to find its equilibrium before venturing into exposed avalanche terrain.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–5
    Recent winds have built wind slabs on lee slopes. These may be easy to trigger with the weight of a person. 

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Storm snow is showing a poor bond to the surface it fell on, meaning storm slabs may be touchy.  

Confidence

Fair - Due to the number of field observations

Weather Forecast

A weak ridge provides a break from heavy precipitation, but doesn't bring clear skies, through Monday and Tuesday.  The freezing level slowly falls to near 800 m and SW winds are light to moderate. On Wednesday, around 5 cm snow is expected, with gradually warming temperatures.

Avalanche Summary

Several size 2 natural wind slabs were observed in the north of the region on Saturday.

Snowpack Summary

Recent snow and strong SW winds have led to wind slabs in wind-affected terrain and storm slabs elsewhere. These overlie a hard crust and/or surface hoar. Easy and propagating results in snowpack tests show the potential for avalanches to fail at this interface below the storm snow. Wind slabs and storm slabs may be easy to trigger with the weight of a person or snowmobile. Deeper snowpack weaknesses are still on our radar, but seem to be dormant for the time being.

Régions couvertes