Bulletin d’avalanche

Banff Yoho Kootenay

Apr 9 – 10, 2019Parks Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

Thu
Fri
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Conditions vary greatly between elevation and aspect. Be inquisitive on alpine terrain features and look for local wind-slabs and the presence of persistent slabs.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5
    While wind-slabs from the weekend appear to be settling out, fresh snow and steady moderate wind from the NW is expected overnight on Tuesday. Because of this, forecasters anticipate new wind-slab development on Weds.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    1–2
    A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. Recent snowpack tests have produced hard results on the March 7th layer. Little recent avalanche activity noted on this layer.

Weather Forecast

A few cm's of snow is expected overnight. On Wednesday expect cloudy skies and continued light precipitation. Temperatures will not reach higher than 3 or 4 degrees in the valley on Wednesday. Steady moderate wind from the NW will blow until about midday Wednesday. Accumulations of up to 10cm is expected by Friday.

Snowpack Summary

15cm of snow from the weekend has accumulated above treeline. Crust are present on most aspects and elevations excluding high North. On high North, 30cm of unconsolidated snow can be found. Below this, a stiff slab overlying weak facets remains a concern in some places. If any notable rain occurs, expect a loose wet problem to develop.

Avalanche Summary

No new avalanches observed or reported today.

Confidence

Régions couvertes