Boletín de aludes

South Rockies

Dec 2 – 3, 2014Avalanche Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

There are almost no observations from this region. We'd love to know what you're seeing out there, kindly send your obs to: [email protected]

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–6
    A weak layer of facets buried a meter deep may fail when overloaded by a skier, sledder or even wind transported snow.  Avalanches on this layer could be surprisingly large.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    Storm snow combined with wind has likely resulted in wind slab formation in exposed terrain at and above treeline.  I suspect these are still susceptible to human triggering. 

Confidence

Poor - Due to the number of field observations

Weather Forecast

Synopsis: Fairly static weather pattern for another few days. It looks like the dry and cold northwest flow will be replaced by moist and warm southwest flow on Saturday. Wednesday: Freezing Level: Valley Bottom; Precipitation: Nil; Wind: Treeline: Light, SW | Ridgetop: Moderate WThursday: Freezing Level: Valley Bottom; Precipitation: Trace; Wind: Treeline: Moderate, W | Ridgetop: Moderate, WFriday: Freezing Level: Valley Bottom; Precipitation: Trace; Wind: Treeline: Moderate increasing to strong SW | Ridgetop: Strong, W

Avalanche Summary

No new avalanche activity to report.

Snowpack Summary

As we begin our forecasting season, we are working with almost no field data. If you have been out in the mountains, we'd love to hear from you. 40 - 60 cm of recent storm snow has liklley been redistributed by wind into slabs that are probably susceptible to human triggering. A weak layer (of facets over a crust) which formed during November's dry spell is now buried a metre or more down. Avalanches failing on this layer have the potential to propagate widely, leading to very large events.

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