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Avalanche Forecast

Archived

Nov 24th, 2014–Nov 25th, 2014

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

Regions

South Coast.

Stormy conditions may lead to rapid changes in the snowpack. We have limited observations from the field. Send us yours at [email protected].

Confidence

Poor - Due to the number of field observations

Weather Forecast

Tuesday/Wednesday: Another vigorous frontal system is expected to bring moderate to heavy precipitation with freezing levels starting around 1500 m but quickly rising to 2000 m, and strong westerly winds. The Coquihalla Pass area is expected to get 5-10cm of snow followed by 25-30mm of rain. Further north should be drier. Continued wet and warm weather is expected for Thursday.

Avalanche Summary

No avalanches have been reported. Please let us know what you're seeing out there at [email protected].

Snowpack Summary

As we begin our forecasting season, we are working with limited information from the field. Early reports suggest there's enough snow for avalanches at alpine and some treeline elevations. Recent snow is likely to have been redistributed into slabs on lee slopes at alpine elevations. This snow may overlie a weak old snow surface (surface hoar, facets and/or a crust) which developed during November's dry spell. Check the bond of the snowpack at this level and take a cautious approach as new snow builds deeper above this layer.

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.