Bulletin d’avalanche

Banff Yoho Kootenay

Jan 15 – 16, 2012Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

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

10-20cm of low density snow has fallen at treeline and above in the last 24 hours, mainly W of the divide. Light SE to SW alpine winds Sunday, with "Yoho blow" valley bottom winds developing along the divide. The deep freeze is coming Monday. SH

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Field tests in the Vermillion region were producing moderate planar compression results down 25-35cm at treeline and above. These wind slabs could be triggered in steep, wind effected areas by a skier or climber.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    A well settled midpack overrides a weaker facetted base. This weak base is found most places except the west side of the divide. Beware of steep shallow snowpack areas (where the likelihood of triggering this basal layer is highest).

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind speed and direction is uncertain on Sunday

Régions couvertes