Bulletin d’avalanche

Banff Yoho Kootenay

Mar 23 – 24, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Expect snow surfaces to be variable as the freezing level drops and the previous moist surfaces form into crusts. Seek out sheltered, shaded aspects to find soft snow.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Extensive wind effect exists with wind slabs in protected lee features.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3

    Buried crust/facet layers exist in the upper snowpack on solar aspects and all aspects below 1800m.

Weather Forecast

Thursday will be a mix of sun and cloud with alpine temperatures from -8 to -12. Winds will be strong out of the west in the morning and decrease though the day. Friday will be much the same but slightly warmer, alpine temperatures -5 to -8.

Snowpack Summary

Strong west winds on Wednesday caused extensive wind effect in the alpine and in open treeline features. Surface crust with moist snow underneath found on solar aspects in sheltered areas at treeline and all elevations below treeline. Several buried crusts exist on solar aspects and are found 30 to 80 cm deep.

Avalanche Summary

Explosives control on Wednesday produced avalanches up to size 3 on south and west aspects. Numerous wet loose avalanches up to size 2 on solar aspects with Wednesday's warm temps. A skier triggered size 2 wind slab on an east aspect was reported on Monday.

Confidence

Régions couvertes