Bulletin d’avalanche

Northwest Coastal

Dec 3 – 4, 2019Avalanche Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

New snow and wind will mean that storm slabs are to be expected, and will likely be reactive to human triggering, especially in wind loaded areas.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2

    Recent new snow and winds will likely have formed reactive wind slabs, especially in wind affected areas.

Avalanche Summary

It is likely that a natural avalanche cycle occurred throughout the day, and overnight on Monday. 

Natural avalanche activity is expected to taper off somewhat throughout the day on Tuesday, however human triggered avalanches remain likely, especially in wind affected areas.

Snowpack Summary

20-40 cm of new snow is likely sitting on a mix of hard wind slabs, sugary faceted snow, and feathery surface hoar crystals, depending on location. Recent strong winds will have likely formed reactive storm slabs throughout the region. Total snowpack amounts are likely in the 60-120 cm range, tapering quickly at lower elevations.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

MONDAY NIGHT - Flurries, 5-15 cm / southwest winds, 30-60 km/h / alpine low temperature near -5

TUESDAY - Mainly cloudy with scattered flurries, up to 5 cm / southwest winds 30-60 km/h / alpine high temperature near -6

WEDNESDAY - Mainly cloudy with scattered flurries, up to 5 cm / west winds, 20-40 km/h / alpine high temperature near -6

THURSDAY - A mix of sun and cloud / light variable winds / alpine high temperature near -7

Régions couvertes