Boletín de aludes

Kananaskis

Mar 15 – 16, 2015Alberta Parks
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Archivado · caducó 12 years ago

Peligro de aludes

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

A heavy snowfall warning has been issued for the region. If the forecast comes true, danger levels will rise to HIGH due to recent storm slab development. Keep an eye on localized snowfall amounts.

Problemas de aludes

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Sluffing can be expected in steep terrain as heavy snowfalls continue.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    2–4
    By Monday morning storm snow totals could reach 45cm. If this occurs slabs will be very sensitive to triggering especially where they overlie previously formed crusts (such as solar aspects).

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    2–5
    The basal weak layers remain a concern and could "wake up" with the new load of snow forecast for Sunday night. Shallow snowpack areas are particularly concerning in this respect.

Avalanche Summary

Nothing was observed or reported today, but observations were very limited due to poor visibility. It is expected that a natural avalanche cycle will begin late Sunday or early Monday in the alpine and at treeline.

Confidence

Fair - Intensity of incoming weather systems is uncertain

Weather Forecast

A heavy snowfall warning is in effect for the region and a further 30cm of snow is possible by late Monday morning. Temperatures will be near -5 celsius at ridgetop on Monday with a clearing trend towards the end of the day. Winds are expected to be light and variable.

Snowpack Summary

Up to 15cm of snow has fallen at treeline over the past 36hrs. This snow has now buried crusts on steep solar aspects at all elevations. On Saturday strong SW winds formed thin storm slabs in lee and cross-loaded terrain in alpine and treeline areas, but further storm slab development slowed down on Sunday. Much of the precipitation fell as rain at lower elevations on Saturday and temperatures dropped overnight. A new rain crust now exists at lower elevations with a small amount of new snow sitting on top.

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