Boletín de aludes

Kananaskis

Nov 23 – 24, 2017Alberta Parks
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Archivado · caducó 9 years ago

Peligro de aludes

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

Cooler temps will move back into the forecast area overnight.  Watch for new thin wind slabs in alpine areas.  Rugged travel anywhere below 2500m.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    Thin new wind slabs will build in Alpine terrain overnight and throughout Friday.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    Wind slabs are now beginning to fail down 30-50cm on the Halloween crust. in some areas they are stepping down to the october 17th crust.  Gullies and pockets along ridgelines are best avoided.

Confidence

Moderate -

Weather Forecast

Snowfalls will begin to taper overnight and freezing levels will drop to the valley bottom.  We should see some recovery in the snowpack overnight but it will take a few days for the cool temps to fully penetrate the snowpack.  Winds will be SW on Friday with Alpine temps of -10C.

Avalanche Summary

Evidence of a few paths going sz 2 - 2.5 over the past 24hrs.  Most of the debris was stopping at the middle or bottom of the tracks of the slide paths.

Snowpack Summary

Freezing levels were around 2600m on Wednesday evening and finally began dropping late thursday afternoon.  So far lower elevations have seen a large decrease in snowpack depths due to warm temps and rainfall while treeline depth are still around 1m.  The recent rapid loading caused a natural avalanche cycle with many paths going sz 2-2.5 failing on either the Halloween crust or the Oct 17th melt freeze crust.  As this layer freezes overnight we will now start to have a new layer in the snowpack.  The November rain crust.  Conditions will tighten up with teh cooling overnight but it will take  afew days for teh cooler temps to penetrate the snowpack.

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