Bulletin d’avalanche

Kananaskis

Mar 28 – 29, 2016Alberta Parks
Voir sur la carte
Archivé · expiré 11 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Solar radiation and daytime heating will lead to an increase in danger levels, especially on solar aspects. Start early and finish early. Big slopes in the Alpine are still a serious concern due to deeply buried weak layers.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–5
    Cornices are large and looming. Avoid exposure to these giants and the underlying slopes. Failures triggered by solar radiation, warming and/or continued loading will cause large to very large avalanches.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    Wind slabs are found in lee and cross-loaded features and remain possible to trigger by skier traffic. Despite the MODERATE hazard rating caution is advised in large terrain features.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    3–6
    The weak Jan 6th layer and basal facets are possible to trigger from shallow snowpack areas or from large triggers such as falling cornices. Occasional large avalanches continue to occur throughout the Rockies associated with this problem.

Confidence

High

Weather Forecast

Tuesday will bring a mix of sun and cloud to the region with no precipitation expected. Alpine temperatures will reach a high of -2 °C with freezing levels near 2100m. Ridge-top winds will be out of the north at 15-30 km/h. The remainder of the week looks to be relatively warm with freezing levels climbing to 2500m on Wednesday.

Avalanche Summary

Nothing new today, but visibility was limited.

Snowpack Summary

Variable new snow amounts overnight ranging from 3 to 15cm. This snow overlies crusts everywhere except on northerly aspects above 2200m. Numerous buried crusts now exist on solar aspects. Moist surface snow observed today at lower elevations. The deep persistent layer from early January remains on our radar as a "low probability - high consequence" layer. Cornices continue to grow and sag.

Régions couvertes