Avalanche Forecast
Issued: Dec 11th, 2016 8:00AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Percy Woods,
Parks Canada
Watch for variable wind slab in exposed terrain at and above treeline. Use caution in steeper wind loaded terrain.
Summary
Weather Forecast
Alpine temperatures should reach a balmy -14C today accompanied by light to moderate westerly winds. A dusting of new snow is expected today before cooler temperatures and clearing sky invades to start the work week.
Snowpack Summary
Cold temperatures are promoting faceting in surface layers slowly softening the widespread hard slabs found in exposed terrain. The recent light precipitation will also aid in this regard. The mid-pack is well settled and sits on a developing facet layer above the Nov 13 crust. Test results on this layer range from resistant planar to no result.
Avalanche Summary
Limited natural activity in the highway corridor with 3 size 2 slabs observed. No new avalanches reported in the backcountry yesterday.
Confidence
Wind speed and direction is uncertain
Problems
Wind Slabs
Widespread wind slabs formed last week during the transition to arctic air. The bond of these slabs continues to improve with field tests giving resistant results. Steeper cross loaded and unsupported terrain features should be avoided.
Dig down to find and test weak layers before committing to a line.Use caution in lee areas. Recent wind loading have created wind slabs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2016 8:00AM
