Bulletin d’avalanche

Kootenay Boundary

Apr 7 – 8, 2019Avalanche Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Wind has redistributed recent snowfall. The deepest and most reactive deposits will be around ridgetop and in lee terrain.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Recent snow above 1500 m has been redistributed by southwest wind. Apply added caution in lee terrain features, where deposits will be deepest and most reactive.

Confidence

Moderate -

Weather Forecast

SUNDAY NIGHT: Mostly cloudy / southwest wind, 10-30 km/h / alpine temperature -2 C / freezing level 1300 mMONDAY: Cloudy with isolated flurries, 5-10 cm accumulation / south wind, 15-35 km/h / alpine temperature -1 C / freezing level 1800 mTUESDAY: Cloudy with snowfall, 10 cm accumulation / north wind, 20-35 km/h / alpine temperature -2 C / freezing level 1900 mWEDNESDAY: Cloudy with sun and scattered flurries, 10 cm accumulation / west-northwest wind 10-25 km/h / alpine temperature -1 C / freezing level 1700 m

Avalanche Summary

On Saturday, explosives triggered small (size 1-1.5) storm slab avalanches up to 30 cm deep. Skier traffic triggered small pockets of storm snow with the deepest (up to 40 cm) and most reactive deposits in specific lee terrain.Numerous small loose wet avalanches were observed on Friday during daytime warming. Continuing with the spring theme, the likelihood of triggering loose wet avalanches will increase if the sun shines, especially in areas with fresh snow.

Snowpack Summary

Around 20 cm snowfall over the weekend and continuing flurries are being redistributed by southwesterly winds. Slabs have formed in lee features at upper treeline and alpine elevations. The recent snow overlies a melt-freeze crust or wet snow; below 1500 m the snowpack is wet and rapidly melting.

Régions couvertes