Boletín de aludes

Jasper

Apr 23 – 24, 2019Parks Canada
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Archivado · caducó 7 years ago

Peligro de aludes

Thu
Fri
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil

Lo esencial

The recent winds have left windslabs in immediate lee features in the alpine & upper treeline.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2

    Continued winds Tuesday redistributed recent storm snow to lee features combined with new snow, and warm temperatures.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3

    New load with warm temps could increase the likelihood of triggering.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–1.5

    Cooling weather on Wednesday should keep the snow cold. Watch out for sunny periods and slopes catching the sun.

Weather Forecast

Wednesday: Broken skies and slightly cooler temps -10 in the alpine along with moderate west winds. Trace precip. Freezing Level 1700M

Thursday: The skies should clear and give a excellent overnight recovery with lows in the -15 range. Winds will be generally light westerly.

Friday: Warmer temps -6 and cloudy skis, Freezing level to rise to 2100M

Snowpack Summary

Previous moderate to strong south westerly winds have created Fresh wind slabs in immediate lee features in the southern part of the bulletin region. this snow now overlies several crusts / facet layers in the upper 40cm, and a faceted layer down 70cm on shady aspects. Expect isothermal snow at lower elevations (below treeline).

Avalanche Summary

Recent whumfing in low angle alpine terrain.

1 size 1.5 Steep N aspect alpine, cornice triggered windslab that appears to have stepped down to a persistent layer.

Confidence

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