Boletín de aludes

Jasper

Jan 23 – 24, 2017Parks Canada
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Archivado · caducó 10 years ago

Peligro de aludes

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

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    Main concern is for cross loaded gully features and steep rocky convexities on lee aspects where fresh windslabs are present.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    The weak lower snowpack is susceptible to triggering in lee areas that have been recently loaded by SW winds and last week's snow.

Weather Forecast

No new precipitation on the horizon. Slight cooling and cooling trend towards mid-week, with calm to light Southerly winds.

Snowpack Summary

Recent 20-30cm of rapidly settling and wind distributed storm snow overlies facets and basal weakness. New reactive windslabs in lee gully features and especially on NE aspects. Extensive scouring of last weeks snowfall at and above treeline. 

Avalanche Summary

Good results (several size 2 to 2.5 in steep rocky alpine terrain) in recent explosive control work at Marmot ski hill, suggests that the weak basal layer is reactive to large loads. No patrol in the Columbia Icefield area today.

Confidence

Due to the number and quality of field observations

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