Boletín de aludes

South Coast Inland

Dec 31, 2018Avalanche Canada
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Archivado · caducó 8 years ago

Peligro de aludes

Tue
Wed
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

The forecast calls for a stable weather pattern over the next few days.

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    New snow combined with wind and warm temperatures has promoted the development of storm slabs that may be sitting on a weak layer of feathery surface hoar. Thickest deposits can be found in the lee of terrain features.

Confidence

Moderate -

Weather Forecast

MONDAY: Mix of sun and cloud / Light north wind / Alpine temperature -3 CTUESDAY: Mix of sun and cloud / Light west wind / Alpine temperature -4 CWEDNESDAY: Flurries / Moderate southwest wind / Alpine temperature 0 C / Freezing level 1500 m

Avalanche Summary

There was a report of two skier triggered avalanches in the Zoa peak area near Coquihalla Summit. These were both reported to be up to size 2 and running on a layer of surface hoar buried 50-60cm deep on a north aspect at tree-line. See the MIN report here.

Snowpack Summary

20-30 cm of recent new snow covering what is reported to be a widespread weak layer of feathery surface hoar. Below this, about 30 cm of recent storm snow sits on a melt-freeze crust below around 1800 m. Reports are limited, but they suggest that the snow is bonding well to the crust. Expect the deepest deposits of storm snow to be in lee and cross-loaded terrain features.In the north portion of the region and possibly the far south, a weak layer of facets and/or surface hoar is buried around 100 to 150 cm deep. The weak layer appears most prominent around treeline, up to 2000 m. There has not been reports of avalanche activity on this layer for the past week. Although this layer is likely gaining strength, field observations show that slab avalanches remain possible on this layer where it exists.

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