Boletín de aludes

Kananaskis

Mar 17 – 18, 2014Alberta Parks
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Archivado · caducó 13 years ago

Peligro de aludes

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

Conditions are prime for human-triggering. Choose conservative terrain and give the snowpack some time to heal. Watch for periods of intense solar radiation that will quickly de-stabilize the snow on solar aspects.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    2–4
    Fresh wind slabs are found on lee and cross-loaded features at treeline and above. If these slabs are triggered an avalanche could step down to the Feb 10th layer and produce a large avalanche.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    3–5
    This persistent weak layer is buried 70 to 100cm in Alpine and Treeline areas and is sensitive to human triggering.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–3
    Recent low density storm snow is sluffing on steep slopes on all aspects at all elevations. Solar triggering is also a concern during sunny periods.

Confidence

Fair

Weather Forecast

A mix of sun and cloud on Tuesday with temperatures near -4 at ridgetop. Winds will be moderate to strong from the west. Light accumulations of snow are expected on Wednesday and Thursday.

Avalanche Summary

Several Na loose dry avalanches up to size 1.5 in steep terrain on all aspects at all elevations. Ski cutting produces small sluffs on steep North aspects at treeline.

Snowpack Summary

35cm of low density storm snow in past 48hrs is bonding well to previous surfaces. Moist snow on solar aspects in late afternoon when sun poked out. Previously formed crust buried 35cm is found below 1900m on all aspects, but this crust extends into the Alpine on solar aspects. Isolated ski-controlled sluffing in steep North aspects. Feb 10th found down an average of 100cm at treeline and still produces variable shears.

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