Boletín de aludes

Banff Yoho Kootenay

Apr 2 – 3, 2014Parks Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

It's an uneasy time for avalanche prediction now because in some areas the danger is Low, while in others the danger is Considerable - meanwhile the ski quality is excellent. Be wary, we have seen at least one large avalanche every day this week.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Strong winds in front of Thursday's storm, combined with another 10cm of snow will make for small, but touchy windslab conditions at the higher elevations by mid to late afternoon on Thursday.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–4
    The ground level weakness of facets and depth hoar appears to have woken up, and the main avalanche problem right now is occasional large avalanches failing on the ground. Avoid, or carefully select any large steep slopes at treeline or above.

Weather Forecast

Another storm is heading our way and should move into the region by mid-morning on Thursday. Expect strong westerly winds on the leading edge of the storm, with 10-15 cm expected by Friday. Temperatures should remain below freezing, except if the sunshine pokes through when suddenly things will feel really hot.

Snowpack Summary

Huge and important differences exist across the region now. Western areas such as Emerald and Field have a deep and stable snowpack. Contrast this with the Lake Louise and Sunshine areas, where the weaker snowpack is showing signs that the ground level layer of weak facets is waking up again - slowly. This layer has been dormant since February.

Avalanche Summary

Two new avalanches reported today - a size 2.5 failed on the ground layer from an explosive at the Lake Louise ski area, and a cornice failure on Mt. Rundle triggered an avalanche in the afternoon. Yesterday 4 separate avalanches were reported to have failed on the ground in shallow snowpack areas.

Confidence

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