Bulletin d’avalanche

South Coast

Dec 22 – 23, 2018Avalanche Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

Snowfall amounts for Saturday night and Sunday are uncertain. Treat the hazard as HIGH if you find more than 30 cm of accumulation.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    New snow may not bond well to an underlying hard crust. Observe for the bond of the new snow before committing to larger or steeper terrain features. If you get the snow moving, it could entrain substantial amounts of snow and travel far.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

SATURDAY NIGHT: Cloudy with snowfall, accumulation 20 to 30 cm, moderate to strong southwest winds, freezing level 800 m.SUNDAY: Cloudy with snowfall, accumulation 10 to 20 cm, moderate southwest winds, treeline temperature -1 C, freezing level 1000 m.MONDAY: Clearing over the day, light south winds, treeline temperature -2 C, freezing level 1000 m.TUESDAY: Sunny with afternoon clouds, light northwest winds, treeline temperature -3 C, freezing level 700 m.

Avalanche Summary

Although reports are limited in this region there were no signs of avalanche activity around Seymour on Friday, as described in a MIN report here. In the neighbouring Sea to Sky region, many natural and explosive-controlled avalanches have been reported through the last several days in alpine terrain. Similar avalanche activity is likely to be found at high elevations in the South Coast region.

Snowpack Summary

New snow on Saturday and Sunday are falling on a melt-freeze crust that was formed during Thursday’s storm.  The new snow may not bond well to the crust. Expect the deepest deposits in lee terrain features around treeline and alpine elevations.

Régions couvertes