Boletín de aludes

Kootenay Boundary

Mar 31 – Apr 1, 2015Avalanche Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

Warmth remains the main driver of avalanche hazard as we shift into a more spring like pattern. Minimize your exposure to large slopes if the snowpack is becoming moist or wet.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Upper elevation winds have been out of the west at slab-forming speeds for the past 48 hours.  Stay on guard for fresh and potentially touchy wind slabs, especially if your travel plans include terrain immediately lee of ridge-crest.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–4
    Many ridge-lines are wearing visor like cornices.  These large, vulnerable and dangerously heavy chunks of snow hang precariously over many alpine features.

Confidence

Good

Weather Forecast

Wednesday: Broken cloud cover. Freezing level hovering around 1500m. No significant precipitation. Moderate NW winds at all elevations.Thursday: Freezing level starting around 1000m, rising to around 1700m in the afternoon. Light NW/W winds at all elevations. Few clouds in the morning increasing to 80% cloud cover in the afternoon.Friday: Freezing level starting near 1000m, rising to approximately 1700m in the afternoon. Light SW winds at all elevations.  No significant precipitation expected.

Avalanche Summary

On Monday warm temps led to a natural wet slab failure. The size 2 avalanche ran on a steep NE facing feature at 2200m.

Snowpack Summary

Monday night brought the best re-freeze in recent memory which probably formed a surface crust. 3 - 10 cm of moist snow lie between this surface crust and the March 24th crust that is up to 20cm thick. Below this crust 15 to 60cm of moist rain soaked snow can be found which all rests on the mid-March crust/facet complex. It looks like we'll be into a more spring like melt-freeze cycle for the forecasting period which should start to tighten up the upper snowpack. The mid and lower snowpack are already strong and well settled.

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