Boletín de aludes

South Coast Inland

Dec 17, 2017Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

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

Fresh storm slabs may bond poorly to a melt-freeze crust on Sunday. If you see more than 30cm new snow on a firm crust, consider the danger to be HIGH.

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–3
    Take a cautious approach to the mountains on Sunday, especially if you see more than 20cm of new snow on a firm crust.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain on Sunday

Weather Forecast

Significant storm snow totals are forecast for the south of the region (Coquihalla area), with lesser amounts in the north. SUNDAY: Snow. Accumulation 5-20 cm (highest amounts for Coquihalla area). Ridge winds moderate from the southwest. Temperature -2. Freezing level 700 m.MONDAY: Flurries. Accumulation 5-10 cm (highest amounts for Coquihalla area). Ridge winds moderate from the west. Temperature -4. Freezing level 700 m.TUESDAY: Snow. Accumulation 10-20 cm. Ridge winds moderate from the north. Temperature -4. Freezing level 700 m.

Avalanche Summary

Small natural dry loose avalanches to Size 1 were reported in the north of the region (Duffey Lake zone) on Saturday.

Snowpack Summary

About 10cm of new snow covers a crust that formed on almost all aspects: the exception being shaded north aspects at upper elevations, where the old snow surface consisted of dry, sugary snow.Lower down, the snowpack is well settled and overlies the late November rain crust, now 20-50 cm deep. Snowpack tests in the Duffey Lake area produced hard, sudden test results associated with this layer. Treeline snow depths are approximately 1 m throughout the region.

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