Boletín de aludes

Northwest Coastal

Dec 4 – 5, 2014Avalanche Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

The next few days should see a gradual transition to milder and wetter weather. A much stronger storm is on the horizon and is expected early next week.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Old hard wind slabs may be lurking on open west or south facing slopes, and new wind slabs may form on north or east facing slopes. These may be more susceptible to triggering as temperatures warm later this weekend.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Friday: Cloudy with flurries - around 5 cm. The freezing level remains at valley bottom. Ridge winds increase to moderate from the S-SW. Saturday: Continued light snowfall – another 5-10 cm is possible. The freezing level starts to rise to around 500 m by the end of the day. Winds increase to strong from the SW. Sunday: Mainly cloudy. The freezing level is around 800 m but we could see an above freezing layer form near 1500 m. Ridge winds are moderate to strong from the S-SE.  

Avalanche Summary

There are no new reports of natural or rider triggered avalanches. Please let us know what you're seeing out there. Email us at [email protected].

Snowpack Summary

Conditions vary significantly throughout the region, at different elevations, and on different aspects. The common theme is that the snowpack is generally shallow, quite facetted (sugary), and very wind affected. In the past couple days we've seen 15-40 cm of low density snow fall. This snow buries a previous surface that was heavily wind affected, with possible pockets of surface hoar in sheltered areas. New dense wind slabs may be found on a variety of aspects in open terrain. The mid-November crust-facet layer is now 40-60 cm deep and continues to show easy to moderate shears in snowpack tests. Deeper in the snowpack, at 80 cm down there is another crust that is breaking down and becoming bonded to the surrounding snow.

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