Boletín de aludes

Banff Yoho Kootenay

Nov 21 – 22, 2012Parks Canada
Ver en el mapa
Archivado · caducó 14 years ago

Peligro de aludes

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

Lo esencial

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    30 cm HSt and westerly winds producing wind slabs on lee aspects down into treeline elevations. Wind slabs are touchy and are reactive to skier triggering.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    Although no recent natural avalanches has been observed on this layer, this still is a significant interface to be aware of. Latest storm inputs may make this layer close to being overloaded. Easy to mod shears found on this layer at Bow Summit .

Weather Forecast

The storm is over. Expect mixed sun and cloud with light snow accumulations through the end of the week. Temperatures will cool off slightly with freezing levels near valley bottom. Winds forecast to be light from the west.

Snowpack Summary

30 cm of storm snow at tree-line along the continental divide along with moderate to strong westerly winds has created wind-slabs in the alpine. Wind slabs are reactive to skier triggering on steep lee terrain. Easy shears at storm snow interface and mod shears down 60 cm on Nov 6 crust.

Avalanche Summary

Sunshine Ski Hill reported several class 1 avalanches ski cut within storm snow on steep rolls. During field trip to Bow Summit area no natural avalanches were observed although visibility was not great. Some whoomphing was heard at treeline.

Confidence

Regiones cubiertas