Bulletin d’avalanche

Banff Yoho Kootenay

Apr 6 – 7, 2014Parks Canada
Voir sur la carte
Archivé · expiré 12 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
Ouvrir la carte complète

Points saillants

Rising freezing levels should be expected over the next day or two. Keep in mind that rapidly warming conditions are detrimental to the snowpack and increase avalanche risk.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Isolated wind slabs in the lees of alpine ridge crests will still be susceptible to human triggering in the short term.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Thin areas mainly E of the divide are still susceptible to triggering basal layers causing larger avalanches. Big triggers such as cornice failures could be enough load to trigger an avalanche on the ground level.

Weather Forecast

Rising freezing levels over the next two days (possibly to 2300m) will hold the danger rating at considerable. On Tuesday night the forecast could see up to 25cm of snow with warm temperatures and strong wind. This will elevate the danger rating to high on Wednesday.

Snowpack Summary

New wind slabs 15-25 cm thick in the immediate lees. Western areas such as Emerald and Field have a deep and stable snowpack. Contrast this with the Lake Louise, Hwy 93 N, & Sunshine areas, where there is a weaker snowpack with sudden collapse very easy compression results on the basal depth hoar. A crust exists on all but N aspects.

Avalanche Summary

No avalanches were observed or reported today.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

Régions couvertes