Boletín de aludes

Jasper

Apr 9 – 10, 2013Parks Canada
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Archivado · caducó 13 years ago

Peligro de aludes

Thu
Fri
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

A spring storm on Wednesday will bring strong westerly winds, rain at lower elevations and up to 25 cm above 2000 m.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    Cornices are big and will continue to build with the forecasted weather.  Minimize your exposure time beneath them and staying well back from wind exposed ridge crests.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Very Likely
    Tamaño
    1–3
    Up to 25 cm of storm snow accompanied by strong SW winds will build slab conditions on the smooth sliding surface formed by previous temperature crusts on lee treeline and alpine slopes.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    10-15 mm of rain on Wednesday will destabilize the melt freeze crust currently covering the isothermal snow below.  Expect loose wet slides on steeper slopes and in gulley features.

Weather Forecast

Expecting 10 to 15 mm of precipitation on Wednesday.  This will fall as rain at lower elevations and may translate to over 25 cm of snow at and above treeline.  Strong westerly winds will accompany this precipitation and temperatures will remain cool for this time of year.

Snowpack Summary

Rain will weaken the melt freeze crust below treeline producing a wet and unconsolidated snowpack.  Windslabs will build on the smooth temperature crusts at and above treeline on north to east aspects.

Avalanche Summary

No avalanche activity has been reported or observed in the past 5 days.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

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