Boletín de aludes

South Coast

Apr 16 – 17, 2014Avalanche Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    New snow may form storm slabs at higher elevations.  Stiffer wind slabs are expected to form in leeward terrain features.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Rain at lower elevations will saturate and destabilize the upper snowpack.  Loose sluffing from steep terrain features is possible, especially from human-triggering.

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

A warm front will bring precipitation to the south coast on Wednesday night and Thursday. Unsettled conditions are expected for Friday before the next system reaches the coast on Saturday.Wednesday Night: Precipitation: 5-10mm, freezing level: 1600m, ridgetop wind: light-moderate SWThursday: Precipitation 10-15mm, freezing level: 1600m, ridgetop wind: moderate SWFriday: A mix of sun and cloud, light scattered flurries possible, freezing level: 1300m, ridgetop wind: light SW-NWSaturday: Precipitation 5-10mm, freezing level: 1800m, ridgetop wind: moderate-strong SW

Avalanche Summary

No new avalanches have been reported. Cooler temperatures and good overnight recovery over the last few days have improved stability. Expect increased avalanche activity with warming temperatures, new snowfall, and moderate to strong winds.

Snowpack Summary

New snow is sitting on a melt-freeze crust which exists on all aspects up to 2000m, and to mountain-top on solar aspects. The recent warmer temperatures have helped to strengthen and settled the upper snowpack, especially on solar aspects. Isolated wind slabs may still exist, although they are most likely gaining strength. Surface hoar growth has been noted on shady slopes at higher elevations, and large sagging cornices are becoming weak with daytime warming. The February crust/facet layer is now deeply buried 150-250 cm below the surface. This layer is mostly inactive at this time, but could re-awaken with extended warming, solar influence and large triggers like cornice fall.

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