Bulletin d’avalanche

Jasper

Feb 3 – 4, 2015Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

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

Visibility in the Alpine should improve on Wednesday with recent snowfall making for some good ski travel conditions at treeline and above.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Windslabs on lee features will continue to develop throughout the storm. Continued moderate temperatures will help build windslabs and cornices over steeper features.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    This layer remains a concern in isolated areas above treeline and may be triggered by large loads such as cornices or from shallow areas by skiers. The entire snowpack throughout the forecast region is riding on 15 to 25cm of depth hoar.

Weather Forecast

Expect light snowfall to continue through Tuesday with continued moderate southerly winds and cool temperatures. Wednesday may see some patches of blue before warmer temperatures and a moist Pacific system begin to dominate the west starting Thursday.

Snowpack Summary

Last weeks's warm temperatures and rain resulted in a widespread crust up to 2400m on all aspects. Higher elevations have wind affected surfaces in exposed areas and wind slabs on lee aspects. 15-20 cm of storm snow has accumulated over either crust or wind hammered snow. The snowpack is resting on weak basal facets that are 15cm-25cm deep.

Avalanche Summary

No new avalanches reported today. Visibility was poor due to cloudy conditions and snowfall.

Confidence

Forecast snowfall amounts are uncertain

Régions couvertes