Bulletin d’avalanche

South Coast Inland

Apr 4 – 5, 2019Avalanche Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

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

Conditions vary rapidly with elevation. Watch out for fresh wind slabs above the rain-snow line.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Strong southwest wind has blown recent snow into lee terrain features, forming wind slabs. Use added caution above the rain-snow line, where these deposits may be reactive to human traffic.

Avalanche Summary

Small storm slab avalanches were triggered by skiers and naturally on Wednesday. They were 10 cm thick and generally on northerly aspects. The likelihood of triggering avalanches will increase above the snow-rain line due to continuous snowfall this weekend.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

THURSDAY NIGHT: Partly cloudy, light south wind, alpine temperature -2 C, freezing level 1900 m.FRIDAY: Cloudy with snowfall, accumulation 5 cm, moderate to strong south wind, alpine temperature -4 C, freezing level 1600 m.SATURDAY: Cloudy with snowfall, accumulation 10 to 20 cm, moderate south wind, alpine temperature -4 C, freezing level 1600 m.SUNDAY: Cloudy with snowfall, accumulation 5 cm, light to moderate southwest wind, alpine temperature -4 C, freezing level 1600 m.

Snowpack Summary

Above around 1900 m, 10 to 15 cm of recent snow overlies a melt-freeze crust on all aspects except for north, where the snow may overly weak faceted snow or surface hoar. The snow has been redistributed by strong southerly wind. Another 5 cm is expected to accumulate during Friday. Below 1900 m, the snowpack is wet. Snow is melting rapidly at lower elevations.

Régions couvertes