Boletín de aludes

Kananaskis

Mar 27 – 28, 2015Alberta Parks
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Archivado · caducó 12 years ago

Peligro de aludes

Sun
Mon
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
4 · Fuerte
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Lo esencial

We are into "spring conditions" at this time.  Stability will decrease throughout the day as temperatures rise.  Decreases in stability will be most apparent on solar aspects especially in thin rocky terrain.  Watch for good overnight freezes. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–4
    North aspects in the Alpine areas the likely areas you will encounter these problems.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Very Likely
    Tamaño
    1–3
    Warm temps are making the snowpack isothermal at lower elevations.  When the snowpack is fully isothermal, it has little to no strength.  When the comes out stability decreases very fast.  Especially on thin rocky solar aspects.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–5
    Thin steep unsupported features are places to be thinking about consequences.

Confidence

Fair - Freezing levels are uncertain on Saturday

Weather Forecast

A mix of sun and cloud with isolated flurries.Precipitation: Trace.Alpine temperature: High 1 °C.Ridge wind west: 30 km/h gusting to 55 km/h.Freezing level: 2300 metres.

Avalanche Summary

Loose wet avalanches were observed on solar aspects and at lower elevations up to sz 1.

Snowpack Summary

Freezing levels climbed up to 2600m on Friday and as a result, the snowpack is isothermal at lower elevations.  We are now entering a true spring snowpack state. In the morning when temperatures are cooler, the snowpack is stable.  Then as the day progresses and warms up and freezing levels rise, the snowpack will become less stable. Isolated pockets of windslabs may be found on true north aspects at higher elevations and this will continue to remain a concern for skiers.  Now is the time to be looking for corn snow skiing... 

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