Avalanche Forecast
Regions: South Coast.
Confidence
Fair - Freezing levels are uncertainfor the entire period
Weather Forecast
Monday: 5-7cm of snow arriving late in the day / moderate to strong southwest winds / freezing level at 1400mTuesday: Light to moderate snowfall throughout the day / strong southwest winds / freezing level at 1400mWednesday: moderate to heavy snowfall / strong south winds / freezing level at 1400m
Avalanche Summary
No new avalanches were reported in the past 24 hours.
Snowpack Summary
The past week's storm snow totals are now in the 60-90cm range. Strong southerly winds shifted snow into wind slabs on lee slopes in the alpine and at treeline. The past weekend saw a break in the weather and the upper snowpack may have strengthened, but only marginally. Expect further wind and storm slab development throughout the forecast period.Below the recent storm snow, three weaknesses exist in the mid snowpack. A surface hoar layer formed in early December overlies facets and is down about 60cm. It is giving easy, sudden collapse results in snowpack tests.A second surface hoar layer buried around Christmas is also giving easy, sudden planar results.A crust/facet combo which exists to around treeline, buried on December 17th, adds to the complexity of the snowpack and has shown the potential to propagate widely.Persistent weaknesses seem to be more of a concern around the Duffey Lake area than in the Cascades (Coquihalla and Allison Pass).The lower snowpack is generally well-settled and strong.
Avalanche Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 1 - 3
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 2 - 5