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Avalanche Forecast

Archived

Dec 11th, 2014–Dec 12th, 2014

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

Regions

South Coast.

Conditions vary widely across the region. Check the forecast details tab.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Temperatures should start to fall on Friday and get progressively cooler through the weekend. Around 15cm of snow is expected overnight Thursday/Friday, with the snow line gradually lowering to about 1300 m. Moderate to strong SW winds on Friday become light for the weekend.

Avalanche Summary

No new reports of avalanches. Please let us know what you're seeing out there. Submit your observations to the Mountain Information Network.

Snowpack Summary

Conditions in the Coquihalla area are quite different to the Duffey region. Reports from the Coquihalla suggest there's less than 1 m of snow in most avalanche areas with a relatively simple, recently rain-soaked, snowpack. Around the Duffey, we have limited observations, but it's expected that fresh storm and wind slabs exist and that these may be overloading snowpack weaknesses formed in November.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.