Avalanche Forecast

Issued: Feb 19th, 2012 9:25AM

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

Avalanche Canada jlammers, Avalanche Canada

Summary

Confidence

Fair - Intensity of incoming weather is uncertain

Weather Forecast

Monday: Trace amounts of snow with some clearing / light to moderate northwest winds / freezing level @ 1100m Tuesday: Light snowfall increasing to moderate snowfall in the evening / strong westerly winds / freezing level @ 1100m Wednesday: Light snowfall / strong westerly winds / freezing level@ 800m

Avalanche Summary

No new avalanche activity has been reported.

Snowpack Summary

Between 15 and 20cm of recently fallen snow (up to 35cm in the Coquihalla area) sit over an assortment of old snow surfaces that formed during a sunny dry spell a few weeks ago. These surfaces include: melt-freeze crusts on all aspects below 1700m and on steep solar aspects higher up, old wind slabs, and facets which exist on north aspects as well as around crusts. Sandwiched between the old surfaces and the more recent snow may be buried surface hoar. The surface hoar seems to be most prominent at treeline and below, and is most likely to be found in the north and central parts of the region. At this point there hasn't been enough of an overlying slab to create reactivity on these potentially weak buried layers. This could all change with incremental loading and increased winds forecast for this week. In general the mid and lower snowpack are strong and well settled. For some great insight on incremental loading, check out our latest Forecaster's Blog post.

Problems

Wind Slabs

An icon showing Wind Slabs
Moderate winds and light snowfall on Sunday night will create wind slabs on lee slopes.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood

Likely

Expected Size

1 - 2

Valid until: Feb 20th, 2012 9:00AM