Bulletin d’avalanche

Banff Yoho Kootenay

Feb 22 – 23, 2019Parks Canada
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Archivé · expiré 8 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

Its a mixed bag of wind effect, facets and powder at treeline and above. Watch for pockets of wind slab or heavy sluffing in very steep terrain.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    A mix of old and new wind slabs have been found on various aspects that in the short term will be something to watch for in the terrain.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5
    A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.

Weather Forecast

A day and a half of light snow and clouds. Continuing cold temps that become tolerable through the day.

Snowpack Summary

Great variability is found in the snowpack in the alpine and near treeline. Deep facets, windslab, suncrust, and snow depths from 0-200+ cm are all present. Midpack surface hoar can be found in isolated locations at treeline and below, and is producing hard but sudden test results. A weak basal snowpack exists in many areas.

Avalanche Summary

No avalanches were reported today.

Confidence

Régions couvertes