Boletín de aludes

Cariboos

Apr 6 – 7, 2013Avalanche Canada
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Archivado · caducó 13 years ago

Peligro de aludes

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

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    New snow combined with moderate winds have created fresh windslabs in the lee of terrain features.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–6
    New snow and wind have made large cornices even bigger. Cornices failures may act as a trigger for deeper buried weak layers.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    With little re-freezing overnight below 1700m, loose wet avalanches will run on solar aspects if there is rain falling or even short periods of intense solar radiation. Wet slab avalanches are also possible.

Weather Forecast

Synopsis: A much drier pattern is in place through Tuesday afternoon.Sunday: Freezing Level: 1700m Precip: No significant precip expected. Wind: Light, SE.Monday: Freezing Level: 1200m Precip: No significant precip expected. Wind: Light, E.Tuesday: Freezing Level: 1800m. Precip: 5/10mm – 5/20cm Wind: Light, South.

Avalanche Summary

No new avalanches reported Friday. Previously, wet-loose avalanches up to Size 2.5 were running naturally on solar aspects when the sun was out.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain on Tuesday

Snowpack Summary

At upper elevations 15-25cm of new snow is covering a crust or wet snow. In some places in the alpine and at treeline this new snow may have buried a recently formed layer of surface hoar or facets. At lower elevations (below 1700m) rain has made the snow surface wet or moist. New snow combined with wind will have made large cornices even bigger.The March 10th surface hoar/crust interface is buried more than 100cm in most places. Although unlikely to trigger, this deep persistent weakness remains a concern because of the potential for very large avalanches particularly with heavy triggers such as cornice falls or lighter triggers on solar aspects where the crust is more prevalent. Below this the snowpack is strong and well settled.

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