Boletín de aludes

Kootenay Boundary

Dec 15, 2018Avalanche Canada
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Archivado · caducó 8 years ago

Peligro de aludes

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

A Special Public Avalanche Warning is in effect for this region. The mountains are still primed for human-triggered avalanches, especially at higher elevations.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Recent new snow and strong winds have set up wind slabs in exposed areas, particularly on north to east aspects.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2.5
    A weak layer buried around 50 cm is causing concern. This concern is heightened on steep slopes where wind has drifted snow into a reactive slab.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

FRIDAY NIGHT: 10-15 cm new snow, falling as rain below 1700 m. Strong southerly winds.SATURDAY: Mostly dry. Freezing level around 1000 m. Moderate southwesterly winds. SUNDAY: 5-10 cm new snow. Freezing level around 1500 m. Strong southerly winds.MONDAY: 10-15 cm new snow. Freezing level around 1500 m. Moderate southwesterly winds.

Avalanche Summary

Numerous natural and explosives triggered avalanches to size 2 were reported in the region on Wednesday. Expect the storm slab to remain reactive with high freezing levels and strong winds.

Snowpack Summary

Approximately 50 cm of recent storm snow has fallen in the region with strong southerly winds. This snow sits on top of a weak layer of facets (sugary crystals), surface hoar (feathery crystals) and a sun crust on south aspects. Recent "sudden" snowpack test results on this layer indicate it still has the potential to release avalanches.Lower in the snowpack there were a couple of previous weak layers in the middle of the snowpack that appear to have become inactive, and a layer of sugary facets near the base of the snowpack. This latter layer could possibly cause problems on cold (north facing) slopes at high elevations where the snowpack is thin, but in most places, this is unlikely.

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