Boletín de aludes

Kananaskis

Apr 12 – 13, 2018Alberta Parks
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Archivado · caducó 8 years ago

Peligro de aludes

Sat
Sun
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Pay attention to the affect of solar radiation on friday.  As temperatures warm up and the sun hits slopes, stability will decrease.  Start early!

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Watch for wind slabs in Alpine especially near cross-loaded gullies and immediately below ridge-lines. These slabs may become more sensitive to triggering as the temperatures rise during the day.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Cornices are large and looming. When the solar radiation is strong and/or the air temperature rises, cornice collapses could be a major concern.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    The March 15th melt-freeze crust, buried 30-50cm on solar aspects, could be an issue on bigger slopes, particularly in the Alpine. Evaluate the snowpack for the presence/absence of this problem layer before committing to a terrain feature.

Confidence

High -

Weather Forecast

The snow will taper off overnight and winds will begin to increase into the moderate range out of the west.  Temperatures are forecat to be around -7C with a freezing level around 1900m  When the sun does come out, expect stability to quickly decrease.  These decreases will be more apparent on solar aspects especially in steeper thin rocky terrain.  Pay attention to whats overhead and in the sun.  Cornices will also become weak with daytime heating so use caution. 

Avalanche Summary

No new avalanche activity.

Snowpack Summary

10cm of new snow over the past 24hrs with only light easterly winds.  This new snow is overlying a widespread supportive melt freeze up to 2100m and up to the peaks on the solar aspects.  Windslabs are still being encountered along ridgelines and in cross loaded features.  Use caution in thinner or unsupported terrain near these areas.  The March 15th layer is down 50cm and is slowly gaining strength but we are still treating this layer cautiously.  Dig down and be curious with it and evaluate it before committing. 

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