Avalanche Forecast

Issued: Feb 22nd, 2013 9:50AM

The alpine rating is high, the treeline rating is considerable, and the below treeline rating is considerable. Known problems include Storm Slabs.

Avalanche Canada jlammers, Avalanche Canada

Summary

Confidence

Fair - Due to variable snowpack conditions

Weather Forecast

Saturday: Trace amounts of new snow with a chance of broken skies / Light northwest winds (with strong gusts) / Freezing level at 800mSunday: Moderate to locally heavy snowfall  / Moderate to strong west winds / Freezing level at 1000mMonday: Light snowfall / Light southwest winds / Freezing level at 700m

Avalanche Summary

On Friday widespread avalanche activity to size 2 was observed on low-angle simple terrain in the Garibaldi South area. Observations were generally minimal on Friday; however, I would suspect that to be a reflection of poor visibility rather than actual conditions. Although natural activity may slow down on Saturday, the possibility of a skier, boarder or sledder triggering a large avalanche is very real.

Snowpack Summary

Heavy amounts of new snow and strong winds have created deep and potentially destructive storm slabs. Underneath the new snow, you may find surface hoar that was buried on February 20th.  Field reports suggest that it is reactive in the Garibladi South area. Where it exists, surface hoar will likely prolong the reactivity of the newly developed slab, so it's very possible that the new snow will take some time to stabilize. The mid and lower snowpack layers are generally strong and well settled.Total snow depths vary from around 400 cm in the south to around 180 cm in the north.

Problems

Storm Slabs

An icon showing Storm Slabs
Heavy snowfall and strong winds have created widespread storm/ wind slab instabilities. Triggering will be most likely in wind-affected terrain or in areas where buried surface hoar exists.
The new snow will require several days to settle and stabilize.>Good day to make conservative terrain choices.>Be cautious as you transition into wind affected terrain.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 6

Valid until: Feb 23rd, 2013 2:00PM