Avalanche Forecast
Issued: Feb 16th, 2012 9:29AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Good
Weather Forecast
Friday: Trace amounts of snow / light to moderate southwest winds / Freezing level at 700m Saturday: Trace amounts of snow / moderate to strong easterly winds / Freezing level at 600m Sunday: Trace amounts of snow / light southerly winds / freezing level at 600m
Avalanche Summary
A size 1 skier-triggered wind slab was observed on a northeast alpine feature on Wednesday.
Snowpack Summary
Light amounts of recent snowfall now sit on top of a strong melt freeze crust that exists below 1000m on all aspects and wind-pressed powder on shaded alpine features. Variable winds have redistributed surface snow into isolated pockets of wind slab on a variety of aspects in the alpine, although the reactivity of these windslabs has been most recently described as stubborn. The aforementioned new snow may overly buried a surface hoar layer (crystal size reported to be 1-4 mm) at treeline and below. This surface hoar layer seems most prevalent in protected inland areas. Deeper within the snowpack, a facet layer buried around Jan 20th is the greatest concern although triggering seems unlikely. This layer lies approximately 110-140 cm below the surface and still exhibits hard, sudden planar results in isolated snowpack tests.
Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 17th, 2012 9:00AM