Boletín de aludes

South Coast

Apr 12 – 13, 2015Avalanche Canada
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Archivado · caducó 11 years ago

Peligro de aludes

Tue
Wed
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil

Lo esencial

Winter-like conditions have returned to the region, use caution in wind-loaded terrain and on big features

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    Up to 50cm of recent storm snow combined with strong southwest winds have produced a wind slab problem that my be quite touchy in some locations.
  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–5
    No recent reports of activity on this layer, but we don't think it's gone yet. Something to keep in mind when contemplating riding big features.

Confidence

Fair - Due to the number and quality of field observations

Weather Forecast

Although the most recent Pacific frontal system has passed through the area, unsettled weather and convective flurries continue to bring moderate amounts of precipitation to the area.MONDAY: Cloudy with flurries 5 to 10cm of snow expected for the region. Freezing level will rise to 1600m with moderate to strong winds from the South West.TUESDAY: A brief break in the weather pattern. Cloudy with sunny periods, freezing level around 1200m, winds light to moderate from the South West. WEDNESDAY:  Cloudy with flurries, freezing levels rise close to 1700m, with moderate winds from the South West.

Avalanche Summary

No reports of avalanche activity from yesterday. This is most likely as a result of few field observations. We expect wind slab activity with new loading and strong winds. Solar aspects will become active again when the sun come out, and cornices will again be on our radar.

Snowpack Summary

30 to 50cm of recent storm snow now rests on a variety of crusts and old surfaces including surface hoar and facets that formed in sheltered locations during the recent clear weather. Moderate to strong south west winds are redistributing the storm snow into wind slabs on the lee sides of ridge tops. A facet/crust layer that was buried in mid-March is now approximately 50-100 cm down. This remains a concern in the region because of it's potential for very large avalanches. Cornices are now large and mature and may collapse with increased loading, possibly triggering the deeply buried weak layer.

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