Boletín de aludes

Kananaskis

Mar 28 – 29, 2019Alberta 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

Solar radiation is expected to be strong on Friday.  Be alert on solar aspects as the recent snow will likely start to slide on solar aspects.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–1.5
    Isolated windslabs in alpine terrain that have formed with the recent snow and winds. Check the bond with the underlying crusts.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1–2
    As conditions warm up, watch for wet slabs to start on solar aspects.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3
    This layer becomes a concern when the melt/freeze crust breaks down with solar radiation or warming.

Snowpack Summary

This recent storm has dropped around 10-20cm of snow, more toward the East. Expect to find some soft slabs in the alpine. Expect this new snow to slide and entrain all of the storm snow, especially on solar aspects. . This new snow has fallen on top of a previous melt freeze crust that developed during last weeks heat wave. The main concerns at this time is the new snow sliding on solar aspects that are overlying the previous melt freeze crust as well as concerns associated with the deep persistent weak base. The freezing level on Thursday climbed to 2300m with some moist snow being found below this elevation. Untracked areas at treeline and below are weak isothermal. In these Spring conditions, the avalanche danger rating can deteriorate rapidly, especially with solar input.

Confidence

High -

Weather Forecast

Friday: Expect a mix of sun and cloud with alpine temperatures of +1c. Winds are to be light from the North and a freezing level of 2000m. Solar radiation will be strong when the sun is out and will most probably affect southern slopes to mountain top.Saturday: Expect a mix of sun and cloud, alpine temperatures of +2c and a freezing level of 2200m. Solar radiation will be strong when the sun is out.

Avalanche Summary

Numerous sluffs within the new storm snow were observed on solar aspects but the cloud cover kept the solar radiation to a minimum. Friday is to be sunnier, so more activity is expected.

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