Boletín de aludes

Kananaskis

Apr 3 – 4, 2016Alberta Parks
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Archivado · caducó 10 years ago

Peligro de aludes

Tue
Wed
Alta montaña
Sin grado
Límite del bosque
Sin grado
Bajo el límite
Sin grado
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Lo esencial

Temperatures are forecast to cool on monday afternoon so the snowpack will slowly start to gain strength.  We are into a  spring pattern now with stability decreasing during the day based on temperature, rain or solar influence.  Start EARLY!!!

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    3–6
    The few cornices that havent falling are just waiting too...  Avoid them. 

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    2–4
    Loose wet slides are pulling out slabs on lower slopes. Some of these slabs are deep persistent failing at ground.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    3–6
    The heat being pushed into the snowpack is waking up the deep basal layers triggerring some larger avalanches that are failing at the ground.  This is during the heat of the day.  Quality of the overnight freeze is important to consider.

Confidence

Moderate - Freezing levels are uncertain on Monday

Weather Forecast

Forecast for Monday. Cloudy with scattered flurries.Accumulation: 5 cm.Alpine temperature: High 1 °C.Ridge wind west: 35 km/h gusting to 90 km/h.Freezing level: 2300 metres.

Avalanche Summary

Numerous loose wet avalanches on all aspects except including pure north alpine. A few other deep persistent avalanches up to sz 3 were also noted fail on ground. Some are running full path taking out mature timber at the end of the runouts.

Snowpack Summary

Widespread crusts can be found on all aspects except for true north above 2400m. These crusts on south aspects are up to 20cm thick and fully supportive. As temperatures warm up during the day, these crusts are breaking down, loose wet avalanches begin to occur and as the heat penetrates deeper into the snowpack, deep slab avalanches become likely. There is a brief window between the two wherein there is good corn snow skiing but your timing has ton be bang on. Lower elevations are turning into a full on isothermal snowpack.

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