Boletín de aludes

Northwest Inland

Dec 19 – 20, 2013Avalanche Canada
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Archivado · caducó 13 years ago

Peligro de aludes

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

Forecasters are working with very little field data at this time. If you are traveling in the backcountry and have information, we'd love to hear about it! [email protected]

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–4
    Watch for the development of a new batch of fresh sensitive wind slabs as the winds pick up on Friday.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    3–6
    Triggering an avalanche on the crust/facet combo is likely still possible, especially where the snowpack is thin and weak. Keep this lingering weakness in mind as you make terrain choices throughout your day.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Synopsis: Upper NW flow brings significant precipitation to the North Coast over the next few days. This should result in a bit of a snow accompanied by strong winds for the Inland region.Friday: Freezing Level: 700m Precip: 2/4mm 4/8cm Wind: Lht gusting Strong, NW Saturday: Freezing Level: 700m Precip: Trace Wind: Lht gusting Strong, NWSunday: Freezing Level: 1800m Precip: Trace Wind: Mod gusting Extreme, SW

Avalanche Summary

A few small wind slabs just below ridge crest were reported on Dec. 15. No other avalanches have been reported. This likely speaks more to the lack of observations than actual conditions.

Snowpack Summary

We're relying on a shoe string worth of data for this forecast! There is significant variation in snow depths across the region. In the Smithers area the ski hill is reporting an 85 cm base.  Treeline depths vary between 100 - 180 cm.It sounds like a bit of cold dry snow has fallen in the last two days. The weekend storm finished very warm, as a result a crust can be found near the snow surface below 1100m. The best guess is that the last storm produced around 10 - 50 cm of snow. This snow now overlies the layer of  facets/surface hoar that sit above old wind slabs and melt-freeze crusts which were formed during the December cold/dry spell. We don't have great wind stations in the region, but the coast saw a lot of strong wind during the last storm & I suspect this region was similarly hammered by wind. The mid and lower snowpack is still structurally weak due to facets, potentially even depth hoar and an early season crust near the ground.

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