Bulletin d’avalanche

South Coast

Feb 11 – 12, 2015Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Although the forecast calls for mostly cloudy conditions watch for brief periods of sun that could increase the likelihood of an avalanche, especially on steep south facing alpine slopes.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–5
    A curst is buried about 1 m down. While it appears to be bonding well to the overlying snow it still could have the potential to produce a large and destructive avalanche. Significant warming or a collapsing cornice could trigger this layer.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Loose wet avalanches should be most problematic at elevations below the freezing level where precipitation falls as rain.

Confidence

Fair - Timing or intensity of solar radiation is uncertain

Weather Forecast

Warm, wet and, windy conditions look likely to persist through the next couple of days. Thursday will see mainly cloudy skies producing isolated showers with a freezing level of 2500m and light to moderate south winds. This pattern will persist on Friday when the freezing level is expected to rise to 3000m and the winds becoming more westerly. A cooling and clearing trend is forecast for Saturday with scattered cloud cover expected and the freezing level forecast to return to 2000m accompanied by light west winds.

Avalanche Summary

Slab avalanche activity appears to have tapered off for now although small lose wet avalanches have been reported in steep terrain at lower elevations.

Snowpack Summary

In the south of the region around 50 cm of rapidly settling snow rests on the supportive rain crust from early February. Further north the crust is buried closer to 1m down. The bond to this crust continues to strengthen with ongoing warm temperatures. Southwest winds are forming new windslabs at upper elevations. The snow is moist below 2000m and wet below treeline.

Régions couvertes