Avalanche Forecast
Issued: Dec 13th, 2016 3:53PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Wind effect is extremely variable
Weather Forecast
Expect continued cold and dry conditions for Wednesday, Thursday and Friday with the chance of some cloud late Thursday into Friday. Winds should remain light and variable for Wednesday and Thursday, but pick up to strong northerlies on Friday. Alpine temperatures are expected to remain in the -10 to -20 range with a weak inversion on Wednesday, but significant cooling for Friday.
Avalanche Summary
No new avalanches have been reported, but expect the recent storm snow to be reactive to light triggers in areas where it has settled into a cohesive slab, such as lee slopes near ridgecrests and terrain breaks and sun-exposed slopes.
Snowpack Summary
30-70 cm of low density snow recently buried the previous variable snow surface, including hard wind pressed or scoured areas, old wind slabs, weak faceted snow, or small surface hoar. Wind slabs that have formed in response to southwest winds during the storm, or subsequent northerly winds, are likely to be touchiest in the south of the region where the most snow fell. Weaknesses have also been found within the recent storm snow with reports of moderate snowpack test results on preserved stellars down 48cm in the Coquihalla Pass area. The widespread mid-November crust typically down around a metre. Recent snowpack tests have shown the crust to be unreactive, but it could become a problem in shallow alpine start zones.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South, South West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 14th, 2016 2:00PM