Boletín de aludes

South Coast

Feb 19, 2018Avalanche Canada
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Archivado · caducó 9 years ago

Peligro de aludes

Tue
Wed
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Triggering storm slabs is a concern at all elevations. Be very suspect around wind-affected slopes and convex terrain features.

Problemas de aludes

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2
    Large cornices have formed along ridgelines. Cornices are inherently unstable, unpredictable, and demand respect.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Strong northerly winds have formed fresh slabs at higher elevations. Triggering a slab above the buried crust remains a possibility at all elevations.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

MONDAY: Clear and cold with moderate north wind and alpine high temperatures around -10 C.TUESDAY: Mostly sunny, light wind, alpine high temperatures around -10 C.WEDNESDAY: Mix of sun and cloud with isolated flurries, light wind, alpine high temperatures around -8 C.

Avalanche Summary

No new avalanches were reported on Sunday, but storm snow was very reactive on Saturday. Numerous size 1-2 slab avalanches were triggered by skiers on all aspects at treeline and below treeline, including some that were triggered remotely (from a distance).Looking ahead, avalanche activity is most likely in areas that have been loaded with the recent northerly winds, but any steep terrain feature is suspect given the widespread crust sitting beneath the storm snow.

Snowpack Summary

In sheltered terrain, cold weather is preserving 30-50 cm of low density snow. In exposed terrain, strong north winds have scoured north facing slopes and loaded south facing slopes. A hard rain crust that extends into alpine terrain is buried about 40 cm beneath the recent storm snow. Reports suggest the snow has not yet formed a strong bond to the crust, creating a potential bed surface for slab avalanches. Monitor the bond of the new snow to this crust closely in your local area. There are no significant layers of concern below the crust.

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