Avalanche Forecast
Issued: Dec 19th, 2015 7:32AM
The alpine rating is Storm Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Timing, track, or intensity of incoming weather system is uncertain on Sunday
Weather Forecast
5-10 cm overnight with very strong southwest winds and freezing levels around 500 metres. Another 5-15 cm during the day Sunday with slightly lower wind values expected. Snowfall amounts may be locally higher in the south of the region around Manning Park and the Coquihalla. Continued light snow on Monday with moderate southwest winds and a chance of the freezing level rising up to about 800 metres. More light snow, cool temperatures, and increasing winds on Tuesday.
Avalanche Summary
Soft windslabs released naturally or were triggered by fresh cornice falls in the Duffy Lake area on Friday up to size 2.0
Snowpack Summary
Less new snow in the Duffy Lake area; 10 cm new on Friday with strong alpine winds building windslabs and cornices. There was 15-20 cm of new snow on Friday morning available to be transported into windslabs by moderate southerly winds. These new storm and wind slabs may be sitting on a new layer of surface hoar that was buried on Thursday. The new storm snow is above 40-50 cm of snow from last week, that may also be sitting on a buried surface hoar layer. There is about 100 cm of settled snow above the December 8th melt-freeze crust. There is about 200 cm at 1800 metres in the Coquihalla.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 20th, 2015 2:00PM