Avalanche Forecast
Issued: Dec 11th, 2014 5:18PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
brian webster,
Avalanche Canada
Summary
Weather Forecast
Mainly cloudy with isolated flurries and freezing levels around 1700 m for Thursday night. Friday is mainly cloudy with a gradual cooling trend throughout the day. By Saturday freezing levels will be at valley bottom. Winds will switch from strong SW on Thursday night to light from the north on Saturday.
Snowpack Summary
Strong southwest winds have stripped windward aspects and created fresh wind slabs in lee terrain at treeline and above locations. Mild temperatures have promoted settlement in upper pack, but lower basal layers remain weak and facetted.
Avalanche Summary
Evidence of a small cycle in Yoho Park at and below treeline due to Wednesdays warm temperatures and rain. A fresh slab in past 24 hours was observed on the east side of Mt. Victoria. (2900 m, size 2.5, 200m wide, approx 50 cm deep).
Confidence
Problems
Wind Slabs
Strong southwest winds have stripped windward areas and created fresh wind slabs in lee terrain at and above treeline. These windslabs are reactive to skier triggering.
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Snowpack tests show that the weak facets at the base of the snowpack continue to be a concern.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2014 4:00PM
