Avalanche Forecast
Issued: Dec 2nd, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Wind Slabs.
Catherine Brown,
A wicked, warm, wet storm has changed up the landscape. Dropping temperatures will help lower the hazard.
Summary
Weather Forecast
Temperatures are falling and precip is slowing down.
Tonight: Clear, Freeze level 1500m, light / gusting mod SW winds
Fri: Cloudy, FZL Valley Bottom, Alpine low -10*C, light SW winds
Sat: Cloudy with sunny periods, Alpine temp -11*C, light W winds
Sun: Cloudy with flurries, Alpine temp -16*C, light / gusting mod W winds
Snowpack Summary
On Thursday 10 cm of new snow at tree-line has fallen on 10 cm of moist snow. Rain soaked snow below tree-line will start to form a supportive crust by Friday. Below tree-line travel will be challenging has temperatures lower. The mid to lower snowpack is generally rounded and well bonded.
Avalanche Summary
No new natural avalanche observed on Dec 02.
Avalanche control on Dec 01 produced many avalanches up to size 3.5, some reaching valley bottom. Avalanches started moist and ended wet. Natural activity has backed off as the storm leaves the region and temperatures start to cool.
Confidence
Problems
Storm Slabs
New storm slabs are present at tree-line and above. Strong/extreme south-west winds created slabs over 1m thick. Slabs will continue to gain strength has temperatures cool.
- Be wary of large open slopes that did not previously avalanche.
- New snow will require several days to settle and stabilize.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Watch for wind slabs on lee and cross-loaded features. Strong to extreme winds from the south-west have moved snow.
- Watch for Wind Slabs low on slopes, and in usually sheltered terrain, due to previous extreme winds.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 3rd, 2021 4:00PM
