Boletín de aludes

Jasper

Mar 20 – 21, 2015Parks Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

Continuing snow will improve ski conditions on treeline and alpine slopes. On solar aspects, a breakable suncrust reduces the fun factor.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    These soft slabs have bonded well in most locations. Slab depths range from 25 to 65cm. Slabs sit on a graupel layer around Marmot and a facet layer elsewhere. Moderate shear tests have been found on this interface.

  • 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.

Weather Forecast

Light precipitation to continue until Sunday morning with amounts of 10-15 cm expected at upper elevations.  Rain likely below treeline.  Light to moderate SW winds to continue.  Clearing on Sunday with falling freezing levels.

Snowpack Summary

Crusts exist up to 2200m on all aspects and extend higher on solar aspects. Above treeline, wind slabs up to 65cm thick can be found in isolated locations. Bonding of these slabs is good however a graupel (Marmot Area) and facet (elsewhere) layer has moderate shear tests. Deeper weaknesses can be found near the base of the snowpack.

Avalanche Summary

No avalanche patrol on Friday. No avalanches reported.

Confidence

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

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