Bulletin d’avalanche

Banff Yoho Kootenay

Apr 10 – 11, 2015Parks Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Sun
Mon
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Ski quality is still decent on true North aspects. We expect limited solar activity on Saturday due to cloud cover, but watch locally for sun affect in the afternoon. SH

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Some small wind slabs may form over the next 24 hours in immediate lees of ridge crests. These will be reactive in the short term.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    There have been many reports of cornice chunks falling off of ridge crests which may be big enough a load to trigger an avalanche, or be enough mass themselves to be a hazard.

Weather Forecast

5-10 cm is expected Friday night into Saturday. Lesser amounts are forecast for the Sunshine/Banff regions. This will be accompanied by mod to strong westerly winds and freezing levels to valley bottom in the AM and 1600m on Saturday afternoon.

Snowpack Summary

On N aspects, 15-20 of loose facets overlies strong melt-freeze crusts up to 2300m. All other aspects have sun crust in the morning and moist snow in the afternoon. This buried crust provides a bridge over the basal facets which continue to remain dormant. The exception to this may be large loads such as a cornice falling on a thin snowpack.

Avalanche Summary

Cloud cover prevented solar activity in many areas Friday, and no new avalanches were reported.

Confidence

Régions couvertes