Boletín de aludes

Jasper

Jan 18 – 19, 2014Parks Canada
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Archivado · caducó 13 years ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

It will be difficult to find good quality skiing this weekend but travel conditions should be good.  We expect ice climbing conditions to be excellent!

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Windslabs have been triggered on this interface buried in the snowpack as well as deeper on the basal facet layer.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3
    The basal facet layer is of great concern as it is  the most significant weakness in this year's snowpack.  Use extra caution in areas that have not previously avalanched, especially on open treeline slopes.

Weather Forecast

Temperatures will drop tonight and rebound to +5 to +7 at Treeline on Saturday.  Winds will continue to be light from the SW and sunny skies are forecast.

Snowpack Summary

Warm temperatures are promoting settlement in the snowpack. A supportive mid-pack can be found in sheltered locations.  Last weekend's storm has been stripped by extreme Northerly winds.  Wind slabs are present on lee slopes and in cross-loaded gullies. Weak basal facets are present on slopes where they haven't either slid or been blown away. 

Avalanche Summary

No new observations today.  The crew at Marmot reported minimal results on their control work, the exception being a size 2.5 on a SE facing Alpine slope on the basal facets.  Yesterday's control work on the Icefields Parkway yielded large avalanches to size 3 on all alpine aspects releasing on either the storm snow interface or on basal facets.

Confidence

Freezing levels are uncertain on Saturday

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