Boletín de aludes

Kananaskis

Mar 8 – 9, 2013Alberta Parks
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Archivado · caducó 14 years ago

Peligro de aludes

Sun
Mon
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Avalanche Danger at Treeline may be subject to an increase depending upon just how severe the chinook winds forecast over the next 48 hours become.  Watch out for daytime heating influences that will affect both ski quality and safe travel.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    2–5
    Cornices growth is likely to accelerate as winds increase over the weekend. Cornice failures earlier in the week triggered slab avalanches up to Size 3 on the slopes below.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–3
    Recent snowfall and light/moderate winds has led to sluffing from steep terrain on all aspects at all elevations.  This pattern is continuing with steady light snowfalls expected to continue until Friday AM.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–5
    Snow from the past several days is rapidly settling out. Slab development is present in lee and cross-loaded terrain. Natural avalanche activity declined through the week but prime conditions for human triggering remain.

Confidence

Good

Weather Forecast

Little to no new snow expected over the weekend.  Winds will pick up in intensity and we will see more redistribution of last Sundays's storm snow occurring.  Temperatures have already begun a steady rise and we are seeing solar influences at treeline and below.  A strong upper ridge of high pressure will keep skies mainly clear with temps above normal values.

Avalanche Summary

Widespread sluffing of loose dry storm snow is the most common avalanche observation again Friday.  In a few areas the sluffs are entraining enough volume to be considered Size 2's.  No new slab avalanche activity was observed.

Snowpack Summary

Below treeline surface layers in solar exposed areas are becoming moist with daytime heating and a thin crust has formed.  Steep southerly aspects at higher elevations are also suffering from some solar exposure as well.  Fracture characteristics exhibited in a hasty profile on a 30 degree north facing aspect at treeline showed a 'progressive compression' in a 30cm storm snow layer.  The storm snow layers appear to be bonding well to the old surface layers.  Larger and more fragile cornices are likely to form.

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