Boletín de aludes

Lizard-Flathead

Feb 22, 2018Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

Fri
Sat
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Caution if the sun comes out - avoid steep sunny slopes where the snow will lose cohesion.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    WInd slabs can be found on many slopes at treeline and above.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

THURSDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.FRIDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.SATURDAY: Mix of sun and cloud. Freezing level at valley floor. Light to moderate winds.

Avalanche Summary

Its been fairly quiet the last couple of days, with only reports of explosives triggering small storm slabs.

Snowpack Summary

You are likely to find variable surfaces in open terrain after recent strong winds took out their fury on the upper snowpack. Fragile cornices and hard and soft wind slabs can be found on many alpine and treeline slopes. Ongoing cold temperatures are helping to break down and soften these.A crust/surface hoar interface is about 40-60 cm down, but is spotty in distribution. In sheltered areas where the surface hoar exists, it is reactive in snowpack tests. Deeper in the snowpack, the widespread mid-December weak layer sits about 120-160 cm deep. This consists of a crust, facets or surface hoar. Near the base of the snowpack, a crust/facet layer could be awoken from a thin-spot trigger point, or with a very large load.

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