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Avalanche Forecast

Archived

Nov 22nd, 2014–Nov 23rd, 2014

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

Regions

South Coast.

Stormy conditions over the next few days. Avalanche conditions may change quickly at alpine elevations.

Confidence

Poor - Due to the number of field observations

Weather Forecast

A series of fronts is coming in quick succession over the next few days. Sunday: 1-8 mm precipitation. Freezing level around 1000 m. Moderate W winds. Monday: 5-15 mm precipitation, mostly late in the day. Freezing level climbing to around 1900 m. Moderate to strong SW winds.Tuesday: 10-25mm with freezing level near 2000 m overnight and dropping during the day. Moderate to strong W winds.

Avalanche Summary

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

Snowpack Summary

Welcome to winter! 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 the recent 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.