Avalanche Forecast
Issued: Dec 12th, 2015 8:01AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
andrew jones,
Parks Canada
Below treeline, the December 2nd surface hoar remains reactive to skier loads.
Summary
Weather Forecast
Mostly cloudy today with isolated flurries and freezing levels remaining below 1050m. A pacific storm front will track into the area this evening bringing snow and strong SW winds. Up to 15cm of new snow is expected with precipitation subsiding by early Monday morning. Temperatures will remain cool.
Snowpack Summary
Up to 100cm of storm snow is settling into a slab. At treeline and below, this slab is sitting on the Dec 2nd surface hoar layer. The Dec 2nd persistent week layer remains reactive to stability tests in the hard range. On solar aspects in the alpine the Dec 2nd layer is a sun crust. 15cm of recent snow now covers a supportive crust below 1700m.
Avalanche Summary
Explosive tests produced 2 size 1.5 avalanches triggered in the storm slab at treeline. No other new avalanches were observed.
Confidence
Intensity of incoming weather systems is uncertain
Problems
Persistent Slabs
A 70-90cm slab sits on a suncrust on steep solar aspects and preserved surface hoar at and below treeline. This slab is well formed in areas influenced by strong winds. This layer is becoming less reactive in tests, but remains triggerable by skiers.
Ski short pitches and regroup in safe spots.Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 13th, 2015 8:00AM
