Avalanche Forecast

Issued: Dec 10th, 2013 8:03AM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada esharp, Avalanche Canada

Summary

Confidence

Fair - Forecast snowfall amounts are uncertain on Thursday

Weather Forecast

The arctic air mass that has be sitting over much of BC for the last week is starting to retreat as a series of storm fronts drive warmer air into the province.  Expect isolated flurries and light winds from the southwest on Wednesday  The precipitation will intensify slightly on Thursday with southwest winds at ridgetop will strengthening through the day. Friday will see a brief clearing with sunny periods, and light winds.

Avalanche Summary

Avalanche observations and snow pit tests indicate that lingering windslabs may still be reactive.

Snowpack Summary

Snowpack depths vary greatly across the region with an average of 100cm at treeline. Terrain below treeline is still mostly below threshold for avalanche activity.Arctic outflow winds have redistributed the snows that fell last week forming wind slabs on S to SW slopes at treeline and in the alpine. Surface hoar has been growing over the last week in protected locations near tree line while the cold temperatures have driven faceting throughout the snowpack, especially in shallow areas.A few crusts can be found near the ground, especially at higher higher elevations. There haven't been any reports of avalanches on these layers, but they're worth looking for it if you dig a pit.

Problems

Wind Slabs

An icon showing Wind Slabs
Northeast winds redistributed the snow from last week forming windslabs in lee features at ridgeline and on cross-loaded slopes.  Don't let wind slabs in unusual places catch you by surprise.
Be cautious as you transition into wind affected terrain.>Avoid lee and cross-loaded terrain near ridge crests.>Avoid travelling in areas that have been reverse loaded by winds.>

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Dec 11th, 2013 2:00PM

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