Bulletin d’avalanche

Banff Yoho Kootenay

Apr 19 – 20, 2015Parks Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Tue
Wed
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Excellent spring conditions. However, expect loose and moist avalanches to occur in the afternoon over the coming days. Start early, finish early.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    The forecasted warm/hot temperatures midweek will create a situation where cornices are more unstable. Cornices, combined with the hot temperatures, have the possibility to triggering the deep basal layers.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Expect solar triggered avalanche activity on steep solar aspects in the afternoon. It is possible that wet slides could trigger the basal facet layers if they have enough mass. Start early and be off steep solar aspects by midday.

Weather Forecast

Clear and calm conditions are forecasted for the region. However, towards midweek the freezing level will start to rise considerably during the day.

Snowpack Summary

Supportive crust on solar aspects with 5cm of recent storm snow above 2200m. Previous wind effect in alpine areas. Mid pack is well settled with no significant shears. The basal facets remain the main weakness in the snowpack, but we expect only large loads or a dramatic rise in temperatures to cause failures on this layer.

Avalanche Summary

No avalanches observed or reported today.

Confidence

Régions couvertes