Boletín de aludes

Banff Yoho Kootenay

Mar 28 – 29, 2013Parks Canada
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Archivado · caducó 14 years ago

Peligro de aludes

Sat
Sun
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Solar slopes will have the hazard rise to considerable or high in the afternoons.  Less of a freeze expected at lower elevations on Friday. SH

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    2–3
    Cornice failures have increased in number as the freezing levels rise. They may trigger an avalanche, or be an avalanche themselves in couloirs.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    In shallow snowpack areas, particularly east of the divide, whumphing has subsided. However, recent avalanche activity from cornice falls and warm temperatures shows it is still a layer to be respected.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Occurring in the afternoons, activity has been mainly isolated to very steep slopes at treeline and below.  Higher freezing levels Friday may bring more activity in the alpine.

Weather Forecast

Freezing levels to 2000m+ Friday under high pressure with no snow, light NW winds, and high solar effect.  Little change for the weekend except slightly lower freezing levels.

Snowpack Summary

W of divide. S through W slopes developing variable melt freeze crusts, thickest on steep W aspects.  Powder snow on N aspects. Generally well settled snowpack.E of divide settled wind slabs over basal facets. Supportive travel with variable sun crust up to 2700m.

Avalanche Summary

Steep solar point releases this afternoon reported only to size 1.  Alpine temperatures still fairly cool, keeping most solar activity to treeline and below. Limited field observations today.

Confidence

The weather pattern is stable on Friday

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