Boletín de aludes

Northwest Coastal

Feb 23 – 24, 2018Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

Sun
Mon
Alta montaña
4 · Fuerte
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Lo esencial

Ongoing snow and wind are building storm slabs and wind slabs. Be aware of what's above you as these may fail naturally.

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2.5
    New snow and wind have built fresh slabs, which may fail naturally or with the weight of a person. A storm slab could step down to a deeper weak layer, creating a surprisingly large avalanche.

Confidence

Moderate - Intensity of incoming weather systems is uncertain on Saturday

Weather Forecast

SATURDAY: 20 cm snow. Freezing level near 400 m. Strong westerly winds. SUNDAY: 10-15 cm snow. Freezing level near 400 m. Moderate south-westerly winds. MONDAY: 10-20 cm snow. Freezing level near 400 m. Strong south-westerly winds.More details can be found in the Mountain Weather Forecast.

Avalanche Summary

Rapid wind loading caused a natural avalanche cycle on Wednesday. On steep solar aspects, size 1-2 loose wet avalanches were also observed. A few small wind slabs were triggered by skiers on Thursday.New snow and wind are expected to cause a rise in avalanche activity throughout the weekend.

Snowpack Summary

Snow and wind over the weekend are building storm slabs and wind slabs in open terrain at alpine and treeline elevations. New snow has buried old hard wind slabs, scoured surfaces and sastrugi in many exposed areas. In wind-sheltered terrain, sun crusts or dry facets sit below the recent storm snow.In the upper pack is an interface of sun crusts, facets and spotty surface hoar (which is most prevalent in sheltered treed locations). Deeper in the snowpack, around 50-150 cm down, you'll find a crust/surface hoar layer, which still has the chance to surprise you and could be triggered from a thin snowpack spot, or with a large trigger like cornice fall.

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