Avalanche Forecast

Issued: Dec 23rd, 2015 7:43AM

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

Avalanche Canada esharp, Avalanche Canada

Tomorrow's storm will be most intense in more coastal areas. Danger ratings will be one step lower than forecast in areas that receive less than 20 cm of new snow overnight.

Summary

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

Snowfall will continue overnight in the south of the region petering out by Thursday morning. Garibaldi could receive as much as 30cm although forecast amounts taper off sharply to the north with less than 5cm expected for Pemberton. Friday and Saturday look to be mainly dry. An artic front just inland stretches almost all the way down the coast and will keep freezing levels below 500m. Winds will be light and variable Thursday before building to moderate south-westerlies by Saturday as a powerful storm is forecast to slide down the BC coast.

Avalanche Summary

Avalanche activity appears to have tapered off since the weekend.

Snowpack Summary

Between 40 and 70 cm of new snow fell in the weekend's storms. The new snow is now settling and gaining strength and may be forming variable soft slabs. Wind slabs can be found in immediate lee features on north to northeast aspects at tree-line and in the alpine. The December 8th crust is down about 120 cm and is reported to be well bonded to the snow above it.

Problems

Storm Slabs

An icon showing Storm Slabs
In areas that receive 20cm of new snow or more watch for fresh slabs developing at all elevations as the storm snow settles through the day. Old wind slabs may still be be reactive in lee features on east through northwest aspects.
Choose well supported terrain without convexities.>The recent snow may now be hiding windslabs that were easily visible before the snow fell.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 3

Valid until: Dec 24th, 2015 2:00PM