Boletín de aludes

Northwest Inland

Feb 25 – 26, 2015Avalanche Canada
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Archivado · caducó 12 years ago

Peligro de aludes

Fri
Sat
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
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Lo esencial

New wind slabs may build on Thursday. Use extra caution in wind-loaded terrain. Are you a member of Avalanche Canada? Join today at avalanche.ca/membership

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    New wind slabs may form in leeward terrain features during Thursday's snowfall. Old wind slabs and unsupported cornices may still be lingering in isolated alpine areas but are generally not expected to be a concern.

Confidence

Fair - Intensity of incoming weather systems is uncertain

Weather Forecast

1-3mm of precipitation is expected Wednesday overnight with light-to-moderate alpine winds from the NW. Another 3-6mm is expected for Thursday. Freezing levels are forecast to reach around 1000m and alpine winds should remain light-to-moderate. On Friday, dry and clear conditions are expected as the ridge will re-establish over the region. Freezing levels are expected to be around 1000m and alpine winds moderate-to-strong from the NE. Saturday is currently forecast to be another day of full sun.

Avalanche Summary

No new avalanches were reported on Tuesday. On Monday, numerous wet releases up to Size 2 were reported from steep sun-exposed slopes. Isolated cornice failures and ice falls have recently been reported. Last week several full-depth avalanches up to Size 3 were observed on all but North aspects. On Thursday, fresh wind slabs are the main concern.

Snowpack Summary

The snow surface is highly variable and may include wind-pressed surfaces or old wind slabs, a sun crust or old rain crust, surface hoar, and/or surface facets. A layer of surface hoar buried in the upper snowpack has been reported in some areas and is worth investigating before committing to any big alpine terrain. At the base of the snowpack, weak facets may be persisting.

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