Boletín de aludes

Jasper

Feb 16 – 17, 2017Parks Canada
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Archivado · caducó 10 years ago

Peligro de aludes

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

As delayed access backcountry areas begin to open, proceed with extreme caution as you venture into slopes that have not seen any traffic so far this winter. The snowpack is weak and will be touchy in many areas.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–3
    Hard touchy windslab in the alpine and open tree-line features showing very serious potential for wide propagation in connected features.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–2
    Rain and warm temperatures expected in valley bottoms.

Weather Forecast

Strong Southwest flow bringing strong winds and light scattered precipitation for the remainder of the week. Freezing levels dropping slowly from 2100m (treeline) to valley bottom along with a cooling trend towards the end of the week. Saturday marks the end of the strong wind along with a clearing trend.

Snowpack Summary

Hard surface windslab in the alpine and open tree-line features. Recent HST in sheltered locations at tree-line and below forming a cohesive soft slab over a faceted mid-pack with only marginal support below tree-line. This is all sitting on a weak base of large facets and depth hoar to create an overall delicate and untrustworthy snowpack.

Avalanche Summary

Field teams in the Columbia Icefield Area report numerous loose wet to size 1.5, not triggering slopes below. Less natural slab activity than expected today.

Confidence

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