Boletín de aludes

Banff Yoho Kootenay

Mar 14 – 15, 2015Parks Canada
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Archivado · caducó 12 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

Temperatures will cool off Sunday and conditions will improve as this happens.  Watch for local wind slab formation at upper elevations. SH

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    20cm distributed by winds will make wind slabs touchy in the short term.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may waken up with the warm temperatures , rain, or in shallow areas.

Weather Forecast

15-20 cm in the alpine can be expected in most of the forecast region.(Less in the Banff area) by Sunday AM.  This is a quick moving system which will  settle down Sunday morning.  Freezing levels to valley bottom and alpine highs of -8C for Sunday. 

Snowpack Summary

Rain at lower elevations (below 2000m) has saturated thin snowpack areas. 15-20cm and mod-strong West winds are expected by Sunday morning, which will form fresh wind slabs over previous wind slabs and hard surfaces in exposed lee terrain. The basal depth hoar/facets are bridged by the settled midpack, but caution is advised in thin snowpack areas.

Avalanche Summary

No new avalanches observed or reported today.

Confidence

Forecast snowfall amounts are uncertain on Sunday

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