Bulletin d’avalanche

Banff Yoho Kootenay

Feb 27 – 28, 2012Parks Canada
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Archivé · expiré 15 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

Tricky conditions exist. Sporadic natural activity to size 2.5 on the Valentines surface hoar layer today, and lots of smaller skier triggered slides, mainly at treeline. This condition will exist for the foreseeable future, so pull in the reigns. SH

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Touchy, thin surface wind slabs in lee terrain of ridgetops have been observed, and in some cases may trigger the deeper surface hoar weakness. Light winds and clearer skies Monday will not add to these problems.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–3
    35-55cm at treeline of settled snow sit atop the widespread Valentines surface hoar, and sun crusts on steep S. aspects. Easy to Mod shears were found in Yoho at treeline , with settlements and remote triggering of small rolls in gladed terrain.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number and quality of field observations on Sunday

Régions couvertes