Avalanche Forecast
Issued: Dec 11th, 2011 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Deep Persistent Slabs.
jlammers,
Avalanche Canada
Summary
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain on Wednesday
Weather Forecast
Mostly clear skies and light northerly winds are forecast for monday.Trace amounts of snow are expected on tuesday with light to moderate westerly winds.Moderate snowfall will arrive on wednesday with moderate westerly winds.Freezing levels for the forecast period are expected to stay at valley bottom.
Avalanche Summary
There have been no recent avalanches reported.
Snowpack Summary
At the base of the snowpack mixed forms (rounding facets/rounding depth hoar) with an associated crust are prevalent, and have been especially problematic where it is overlying summer firn. Above that, and down 1-2m, are two more crusts combined with more mixed forms and surface hoar. The overlying snow has recently settled and stiffened and the weak interfaces have also gained strength. The snow surface is wind hammered in wind-exposed areas, crusty on sun-exposed slopes, and faceted powder with large surface hoar on shady sheltered slopes. A thick rain crust is down 20-40cm and extends up to treeline elevations.
Problems
Deep Persistent Slabs
The likelihood of triggering a large avalanche is low, but it still makes sense to keep the deep weaknesses on your radar. The greatest concern is on steep, unsupported slopes with variable snowpack depths above 1900m.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2011 8:00AM
