Avalanche Forecast
Issued: Dec 10th, 2011 8:52AM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to limited field observations
Weather Forecast
Sunday: Expect clearing skies, with light winds and temperatures reaching -10. Monday: Mostly clear, with winds turning westerly but remaining light. Freezing levels could reach 1200m. Tuesday: Expect clouds to build and light flurries to begin late in the day under southwesterly winds.
Avalanche Summary
Isolated reports of small solar triggered sluffs on south facing slopes at treeline and in the alpine.
Snowpack Summary
The Surface Hoar continues to grow due to the clear and cold nights and the cold temperatures are also promoting near surface facetting. Expect to find a sun-crust that has formed in the alpine on south through west aspects. Wind slabs persist in the alpine and in large openings at treeline. Some areas have a rain-crust below treeline from the 28th of November that has been buried by about 20 cms of snow. This rain-crust may be developing facets, and could become a layer of interest after it is buried by more of a load. There is still some concern associated with the November 7 surface hoar layer. This layer is buried 100-150 cms. Tests are showing that this layer is getting harder to trigger, but if an avalanche does release on this layer, it is likely to be large and destructive.
Problems
Wind Slabs
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 11th, 2011 8:00AM