Bulletin d’avalanche

Jasper

Feb 17 – 18, 2019Parks Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Moderate danger rating means human triggered avalanches are possible. Shallow rocky areas have the potential to catch someone off guard. Evaluate snow and terrain carefully.

Problèmes avalancheux

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Little new snow to add to the volume in active loose dry avalanches occurring naturally in the facetted snow from recent cold temps. Ice climbers should consider consequences of an avalanche if climbing in confined gully features

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–3
    It is possible to trigger deep slabs from shallow snowpack areas. If triggered, these will have severe consequences. Terrain management is critical to a safe day.

Weather Forecast

Sunday forecasted to have sunny skies with scattered cloud. Alpine high -18 C. No new snow. Light north and easterly winds: 10 km/h. A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Cold temperatures have faceted the upper snowpack, leaving no slab over a weakness down 40cm (surface hoar, facets, and/or crust). However, the stronger mid-pack could act as a slab over weak depth hoar, which comprises the lower third of the snowpack. This is pronounced in shallow areas such as Marmot basin back-country and the Maligne range.

Avalanche Summary

Field team in Whistler Creek reporting no new avalanches in area. Previous activity noted in the Alpine on lee features.

Confidence

Régions couvertes