Boletín de aludes

Jasper

Apr 3 – 4, 2015Parks Canada
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Archivado · caducó 11 years ago

Peligro de aludes

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

20 cm of snow with Strong East winds will create a reverse loading condition on south and westerly aspects.  This is an unusual situation so greater care is needed on familiar slopes.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    20 cm of snow possible with strong East winds will create a reverse loading condition in the Alpine.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    Large cornices or surface avalanches are the likely trigger for this deep persistent weak layer.

Weather Forecast

Up to 20 cm of snow predicted for Saturday with moderate to Strong East winds in the Alpine.  Clear skies on Sunday with light winds and seasonal temperatures.

Snowpack Summary

Pockets of wind pressed soft slabs were observed in the Parkers Area on Northerly aspects at alpine and treeline elevations. 3-5 cm of fluffy snow over a temperature crust can be found on all aspects tree line and above to 2500m. A supportive midpack sits over a weak basal facet layer in most areas at treeline and above.

Avalanche Summary

A few small point release avalanches at treeline observed on Good Friday.  Of note, a large serac fall off Mt. Athabasca failed to initiate an avalanche.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

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