Boletín de aludes

Kananaskis

Jan 6 – 7, 2013Alberta Parks
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Archivado · caducó 14 years ago

Peligro de aludes

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

After several weeks of no change, the danger level is expected to rise this week due to increased snowfall and strong to extreme winds. The surface hoar and surface facets will not bare the new snow load well. It is time to pull in the reins!

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    Wind slab development is ongoing in the Alpine with up to 15cm of recent snow and persistent strong W and NW winds. Convex and/or unsupported lee and cross loaded terrain at ridgeline should be treated with caution.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–3
    Loose dry avalanches should be expected in extreme terrain as the new snow sits on a weak layer of facets and surface hoar. This is of particular concern to ice climbers.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    3–6
    Its easy to forget about this problem but don't forget about it just yet.  This basal crust will be the likely layer for some large avalanches.  It may be easier to trigger from thin or shallow snow pack areas so heads up in this type of terrain.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain on Tuesday

Weather Forecast

Monday will see winds up to 100km/h out of the NW and temperatures near -11. An additional 5 to 10cm of snow is possible with as much as 40cm possible Tuesday night.

Avalanche Summary

Nothing observed, but visibility was mainly obscured.

Snowpack Summary

10 to 15cm of new snow at treeline in the past 36hrs. Further wind slab development has occurred in alpine areas and loading was ongoing due to strong W and NW winds.

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