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Avalanche Forecast

Archived

Dec 27th, 2015–Dec 28th, 2015

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Columbia.

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Confidence

High

Weather Forecast

A few more centimetres of snow are expected on Monday, before a shift to a cool, dry spell. Expect light northerly winds and a mix of sun and cloud on Tuesday and Wednesday.For more details check out https://avalanche.ca/weather.

Avalanche Summary

A few size 1-1.5 loose dry avalanches have been reported over the last few days.

Snowpack Summary

In general, dry new snow overlies a strong snowpack. You may encounter wind slabs near ridge tops which are sensitive to the weight of a person. As winds shift from south-westerly to northerly, be alert to the possibility of wind slabs on all aspects. Down about 70-100 cm in some areas, a thin crust/facet layer is generally giving hard, resistant results in snowpack tests.The lower snowpack is reportedly well settled. The early December weak layer (about 130-150 cm down) is spotty in distribution, but where it does exist, still gives hard, sudden results, meaning it is unlikely to be triggered, but could produce a very large avalanche.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.