Bulletin d’avalanche

Jasper

Jan 9 – 10, 2015Parks Canada
Voir sur la carte
Archivé · expiré 12 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
Ouvrir la carte complète

Points saillants

The storm slab is proving to be highly reactive to ski cutting where it overlies the weak facet/surface hoar layer. This is likely to be an issue for the foreseeable future.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Recent storm snow has settled into a slab which overlies a weak layer of facets and surface hoar. A forecast of warm temps and clear skies on Friday may well lead to an increased likelihood of avalanches on solar aspects.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    This weak layer exists below a strong mid-pack at treeline and sub-alpine elevations. Large loads such as a cornice collapse or surface slides could still possibly trigger this deep persistent weakness.

Weather Forecast

The forecast calls for little precipitation with clear skies and increasing temperatures through the day on Friday.

Snowpack Summary

Skiing was good yesterday but field teams were very cautious around steep terrain where it was easy to ski cut several small soft slabs.

Avalanche Summary

The debris of a natural size 2 storm slab avalanche was observed from East facing terrain in the alpine.

Confidence

Régions couvertes