Boletín de aludes

Jasper

Mar 29 – 30, 2016Parks Canada
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Archivado · caducó 11 years ago

Peligro de aludes

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

Warm temperatures are starting to wake up the avalanche problems particularly when the afternoons are warm. Start and end your day early. Some avalanches are running quite far.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2
    Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2
    This problem will increase with forecasted warm temps and intense solar radiation. The danger rating will rapidly increase particularly on thin snowpack zones and sun facing slopes. Loose avalanches can initiate larger avalanches below.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    This problem is becoming more active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are waking up this problem.

Weather Forecast

Tuesday night freezing level will be 1200m rising to 2500m on Wednesday with variable clouds and light N winds. No overnight freeze Wednesday night and sun and very warm temperatures and sun Thursday and Friday. Thursday night may have a light freeze.

Snowpack Summary

Cold overnight temps and warming by midday is creating spring like snowpack and surface crusts. Significant variation in snowpack depth through-out the forecast area but generally shallow and below threshold in valley bottoms. Weak basal depth hoar exists. Maligne/Whistler creek areas have less coverage.

Avalanche Summary

Some wet slides on solar aspects in the south end of the park occurring below treeline. Several size 2's and a couple size 3's on a variety of aspects mainly in alpine noted Tuesday, related to steep slopes, shallow locations, rocks, cornice failures, and loose avalanches triggering slabs below. 

Confidence

Timing or intensity of solar radiation is uncertain on Wednesday

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