Boletín de aludes

Northwest Inland

Jan 22 – 23, 2013Avalanche Canada
Ver en el mapa
Archivado · caducó 14 years ago

Peligro de aludes

Thu
Fri
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
Abrir el mapa completo

Lo esencial

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–4
    Incoming snow may bond poorly to old surfaces. New wind slabs are also likely to develop during the next few days.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–6
    A deeply buried facet/crust weakness exists near the base of the snowpack. This layer could be triggered by large loads such as a cornice collapse or from a thin-spot trigger point.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain for the entire period

Weather Forecast

Wednesday: Moderate to strong SW wind.  Alpine temperature near -5. Moderate snow.Thursday: Strong S to SW winds. Alpine temperature near -5. Light snow, becoming moderate late in the day.Friday: Strong SW winds. Alpine temperature near -5. Light to moderate snow.

Avalanche Summary

On Friday, hard wind slabs failed naturally in the north of the region on northeast and east aspects. In isolated occurrences, these triggered full-depth avalanches that ran on basal facets. No avalanches have been reported since then.

Snowpack Summary

The current medley of snow surfaces includes hard and soft wind slabs, scoured slopes, blue ice and thin melt-freeze crusts. New snow may bond poorly to some of these surfaces, especially where surface hoar sits on a hard crust. Surface hoar layers buried in the upper snowpack are patchy in their distribution. Recent snowpack tests gave moderate to hard, resistant results on one of these layers near Smithers. An otherwise strong mid-pack overlies a weak base layer of facets/depth hoar and the remnants of a crust. The snowpack depth is around 100 cm at treeline.

Regiones cubiertas