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Avalanche Forecast

Archived

Dec 14th, 2014–Dec 15th, 2014

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

Regions

Northwest Inland.

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Confidence

Poor - Due to the number of field observations

Weather Forecast

Mainly sunny and cool, with some cloud later Monday afternoon. A series of weak storm systems will push into the interior and bring light snowfall amounts. Freezing levels near 1000 m with ridgetop winds  moderate from the S-SE.

Avalanche Summary

There are no new avalanche reports from the region.

Snowpack Summary

Around 10-20cm of recent snow sits on a newly formed rain crust. At alpine elevations, recent storm slabs and wind slabs may still be sensitive to triggers like the weight of a person. Deeper in the snowpack, weaknesses such as loose sugary facets and crusts exist in some locations. A recent snowpack test from the Hankin-Evelyn area produced easy/moderate pop results down 30 cm on one of three buried crusts.

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.