Boletín de aludes

South Coast

Mar 24 – 25, 2016Avalanche Canada
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Archivado · caducó 11 years ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Lo esencial

Storm slabs are expected to remain a problem above treeline Friday. A rising freezing level combined with the strong kiss of the spring sun is expected to initiate a round of loose wet activity too. Stay alert to changing conditions!

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–5
    Some cornices are the size of a bus. Give these monsters a wide berth when traveling on or below ridge crests.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    15 to 25 cm combined with moderate southwest winds have created storm slabs at and above treeline. These slabs will likely remain sensitive to human triggering Friday. The appearance of the sun Friday may initiate some natural activity too.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    Thursday's storm snow will be exposed to the strong spring sun and a rising freezing level Friday which is expected to initiate a round of loose wet activity at and below treeline. This activity may creep into south facing alpine terrain too.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain on Sunday

Weather Forecast

The steady progression of ridges and troughs continues. Friday ushers in a brief drying day before another upper trough begins to spread high cloud to the region Saturday giving way to convective flurries on Sunday. FRIDAY: Freezing level around 1600 m, trace of snow possible, light northwest wind. SATURDAY: Freezing level around 1600 m, no significant precipitation expected, light southwest wind. SUNDAY: Freezing level around 1500 m, 2 to 10 cm of snow possible, light southwest wind. For more detailed mountain weather information visit avalanche.ca/weather

Avalanche Summary

Reported avalanche activity on Wednesday was limited to small storm slabs. I suspect that there were some natural storm slab failures on Thursday.

Snowpack Summary

Storm totals in the northern portion of the region are between 10 and 15 cm. Slightly more snow fell in the south of the region where they received 20 to 25 cm of snow. The storm featured moderate south/southwest winds which have likely formed storm slabs at and above treeline. Below the new snow the snowpack is strong and well-settled throughout with no notable persistent weaknesses. Cornices are huge and fragile.

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