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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

Kootenay Boundary.

We are operating with pretty low confidence due to the lack of data coming from the regions at this time. Send us a note with your observations to [email protected]

Confidence

Poor - Due to the number of field observations on Sunday

Weather Forecast

Expect a brief break in the wet weather to continue overnight and into Sunday. The next system should move into the Southeast regions on Sunday night or early Monday morning bringing moderate precipitation and Southwest winds. The Monday system is expected to be quickly followed by a large frontal system (warm, windy, and wet) on Tuesday.

Avalanche Summary

We have no reports of avalanches from this region. I suspect that recent storm slabs in the alpine may be easy to trigger where they are associated with a crust and/or facets.

Snowpack Summary

As we begin our forecasting season we are working with very limited field data. If you have been out in the mountains, please send us a note with your observations to [email protected].Early reports indicate there is currently not enough snow to ski or ride at treeline and below. Pockets of skiable terrain exist in the alpine, although access to these areas will likely be a challenge and many early season hazards exist. These pockets of high elevation terrain are the area's most likely to have an avalanche problem, especially as the storm slab develops with forecast snowfall. The developing storm slab may not bond well to the old surface of crusts, facets, and wind slabs.

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.