Boletín de aludes

Jasper

Feb 17 – 18, 2013Parks Canada
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Archivado · caducó 14 years ago

Peligro de aludes

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

Finally some snow!!!  Good weather on Sunday and Monday will be tempting.  Resist the urge to jump into big lines until the new snow has had a chance to settle. 

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    1–3
    There will be increasing load on the persistent slabs now buried by 15-20 cm on new snow.  There is a greater possibility that storm snow avalanches may be enough to trigger the persistent slab layer deeper in the snowpack.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–3
    Up to 20 cm of new snow will fall by Sunday afternoon.  Moderate W to NW winds will be building slab conditions.  These new storm slabs are sitting on smooth hard slab.  The bonding between these layers is uncertain.

Weather Forecast

Snow will end late on Sunday morning with up to 20 cm possible.  Skies will clear in the afternoon, Northerly winds will drop and temperatures will fall.  Family Day Monday will be mostly clear with light winds and seasonable temperatures

Snowpack Summary

Soft windslab are developing on Easterly alpine and treeline slopes with continuing snow and moderate West winds.  These new slabs are sitting on hard slab and sastrugi.  The now buried hard slab is bridging weak basal facets.  10 cm+ new snow is sitting on sun crusts and facets below treeline.

Avalanche Summary

No avalanche observations due to snow and low clouds on Saturday.

Confidence

Forecast snowfall amounts are uncertain on Sunday

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