Boletín de aludes

Northwest Inland

Mar 15 – 16, 2015Avalanche Canada
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Archivado · caducó 12 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

Large amounts of new snow have fallen in the region. Careful route and terrain selection is essential to safe back country riding.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    Buried wind slabs should begin to bond with the new snow that fell recently.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–4
    Up to 125cm of new snow has fallen in the past 48 hrs in parts of the region.  The storm was accompanied by strong winds and warm temperatures., classic conditions for producing large destructive avalanches.

Avalanche Summary

There are numerous reports of large avalanches up to size 4 from yesterday.  Commercial operators and Min. of Highways have reported evidence of a large natural cycle that  occurred during or towards the end of this last storm..

Confidence

Fair - Due to the number and quality of field observations

Weather Forecast

The Northwest Inland should have sunny skies until the next Pacific system arrives on Thursday. Freezing levels will be at valley bottoms overnight and between 1000 and 1500M during the day.

Snowpack Summary

The amount of storm snow varies from 20 to 125cm  across the Inland Northwest region with the largest amounts bing farther north and west. Below the new snow surface, there are a variety of old interfaces;  Wind slabs, hard crusts, surface hoar, and/or surface facets. At the base of the snowpack, weak facets may be found and could possibly be triggered with a big enough load such as a cornice failure. In other parts of the province there has been a surge in activity recently on old, buried weak layers that may be attributed to the rapid warming event that just occurred. These old deeply buried layers could produce very large destructive avalanches if they are triggered. Cornices are now getting to be large and potentially unstable. Solar aspects are now a concern, especially in the afternoon.

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