Boletín de aludes

Kananaskis

Mar 12 – 13, 2019Alberta Parks
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Archivado · caducó 8 years ago

Peligro de aludes

Thu
Fri
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Conservative terrain selection is in order. Stick to low angle slopes and avoid terrain traps.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Wind slabs are everywhere. They will be most sensitive to triggering in steep and unsupported terrain.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Up to 15cm of snow is in the forecast. This could lead to sluffing in steep terrain. Also beware of entrainment of the weak facets in terrain traps such as gullies.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1.5–3
    What will wake up this layer? A skier/rider in a thin shallow snowpack area? Warmer temps with some solar radiation? A cornice failure? This layer deserves respect as any resulting avalanche will be full depth.

Avalanche Summary

A small natural avalanche cycle has occurred over the past 24 to 36 hours with thin wind slabs up to size 2.0 failing on all aspects in steeper terrain in the Alpine and Treeline elevation bands.

Confidence

High -

Weather Forecast

10 to 15cm of snow is expected to fall Tuesday evening with light winds. Wednesday will be mostly cloudy with very light flurries and temperatures near -7 at ridge-top.

Snowpack Summary

There are wind slabs everywhere at all elevation on all aspects, except the most protected of terrain below treeline. Thin sun crusts have formed on solar aspects. The prolonged period of frigid temperatures has heavily faceted the snowpack, and there is no little strength to the midpack in most areas. Ski quality is poor in most areas. 10 to 15cm of new snow Tuesday evening will hopefully improve the snowpack, but probably won't be enough to lead to any significant changes from an avalanche perspective.

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