Boletín de aludes

South Coast Inland

Dec 5 – 6, 2017Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

Thu
Fri
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Don't let your guard down with the sunny weather and fresh snow. Take a cautious approach towards more aggressive terrain - especially steep, wind-affected terrain.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Small wind slabs are possible in steep terrain behind ridge lines, especially in the south of the region (Coquihalla area). On steep slopes, the new snow may not bond well to the underlying crust.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Conditions will be more like spring than winter later this week. Surface snow layers can become weak when hit by the sun. Minimize your exposure to terrain traps - even small sluffs can push you into dangerous terrain.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

We'll have fine weather for the foreseeable future. Significant warming begins Wednesday afternoon.Wednesday: Sunny and warm. Light northerly winds. Freezing levels 3000m. Alpine high temperatures to +2 Celsius.Thursday: Sunny and warm. Freezing levels around 3100 m. Light northwesterly winds. Alpine high temperatures to +3 Celsius. Friday: Sunny and warm. Freezing levels around 3200 m. Light northerly winds.

Avalanche Summary

Little activity has been reported lately, although there are not many observers out there right now. In southern sections (Coquihalla), lingering small wind slabs are the primary concern. In the north of the region (Duffey Lake zone), small (Size 1), dry loose avalanches have been reported in steep terrain at higher elevations.

Snowpack Summary

Approximately 30-50 cm of snow from last week sits on top of a rain crust that formed during the wet weather in late November. The crust is reported to be thick (15 cm) below treeline and thin (2 cm) in the alpine. Southerly winds have blown snow around in exposed areas creating drifts and scoured areas. Stubborn wind slabs have formed near ridge crests and lee features, primarily in the south of the region (Coquihalla area). Tree line snow depths are approximately 110 cm throughout the region.

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