Tomorrow's storm will be most intense in more coastal areas. Avalanches will be less likely in the north of the region were less snow is forecast to fall.
Confidence
Low - Forecast snowfall amounts are uncertain
Weather Forecast
A low over Washington will bring snow, mainly to the southern half of the region on Wednesday and overnight into Thursday. Garibaldi could receive as much as 20cm although forecast amounts taper off sharply to the north with only around 5cm expected for Pemberton. Isolated flurries are expected on Thursday while Friday looks to be 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 Tuesday and Wednesday before becoming moderate westerlies by Friday.
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
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.