Boletín de aludes

Banff Yoho Kootenay

Feb 24 – 25, 2014Parks Canada
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Archivado · caducó 13 years ago

Peligro de aludes

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

The skiing is excellent so enjoy it, but be patient and stick to moderate terrain until the Feb 10th layer has a chance heal. CJ

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Recent winds have produced wind slabs in lee alpine terrain. These wind slabs could step down to the storm snow interface resulting in large avalanches.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    The natural cycle is over but the Feb 10th interface down 30-70 cm is still producing easy to moderate results, with lots of whumphing and some skier triggered avalanches. Stick to moderate angled, well supported terrain until things improve.

Weather Forecast

Clear skies and overnight temperatures in the -25'C range are forecast for tomorrow with highs around -13'C. Tuesday and Wednesday will see continued clear skies and a gradual warm up. Winds are forecast to be light from the NW.

Snowpack Summary

30-70cm of recent storm snow is sitting over the Feb10th layer of facets, sun crust and surface hoar. Field tests show an easy to moderate persistent shear at this interface. Recent SW winds have also created wind slabs in alpine terrain. These wind slabs are easily triggered and can step down to the Feb 10th interface.

Avalanche Summary

The natural avalanche cycle seems to have subsided, but a skier triggered avalanche (Class 2) was reported in the Lake Louise area today and a skier remote (Class 1.5) was reported in the Helen Lake area yesterday. Lots of evidence of the recent natural cycle on all aspects at treeline and above (up to Class 2.5) failing on the Feb 10th layer. 

Confidence

Regiones cubiertas