Boletín de aludes

Kananaskis

Feb 25 – 26, 2014Alberta Parks
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Archivado · caducó 13 years ago

Peligro de aludes

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

Don't let the perfect weather lure you into inappropriate terrain. Large features should be avoided as the Feb 10th layer still needs time to heal. Conservative route selection is key to managing the current avalanche problems.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–4
    Naturally triggered avalanche activity has subsided, but human triggering remains touchy. The Feb 10 persistent weak layer will be a problem for some time and is buried between 40 and 70cm. Whumpfing and cracking continue to be observed.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Sunny skies and warm temperatures could trigger avalanches from steep features on solar aspects. Keep an eye on overhead terrain as the day heats up.

Confidence

Good

Weather Forecast

Clear skies will continue into Wednesday and most of Thursday. Winds will be light and temperatures will be much more reasonable until a return to frigid conditions on Friday. Light precipitation is also expected Friday.

Avalanche Summary

Very isolated loose dry in steep Alpine terrain up to size 1.0 were observed today. One naturally triggered size 2.0 slab was observed on a North aspect at 2500m. Today's snow study flight across the region revealed further evidence of a previous widespread natural cycle up to size 2.5 in Alpine and Treeline terrain. In some cases recent avalanche activity occurred on re-loaded bed surfaces from the cycle in January.

Snowpack Summary

Surface faceting. Variable wind effect Alpine. Between 40 and 70cm overlies the Feb 10th layer, and this interface is still producing moderate shears in compression tests. Along the continental divide the midpack remains supportive, but areas further east are much weaker. The basal facets and depth hoar are well pronounced, but are currently dormant with respect to avalanche activity and stability tests.

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