Avalanche Forecast
Issued: Mar 10th, 2012 9:55AM
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 variable snowpack conditions
Weather Forecast
Sunday: light snowfall - light southerly winds - freezing level at 500m Monday: trace amounts of snow with some clearing- light southeast winds - freezing level at 400m Tuesday: very light snowfall - light southwest winds - freezing level at surface
Avalanche Summary
Observations have been limited, but reports suggest that fresh wind slabs are touchy with a few small skier-triggered 10-40cm thick slabs on wind-exposed rolls at treeline and below.
Snowpack Summary
Intense wind-loading has taken place with snow surfaces either getting scoured or packed into hard wind slabs. Warm temperatures and sun-exposure and more recent cooling have created crusts on all aspects below around 1000m and some areas as high as 1600m. The mid February interface, down around 60cm, is variable and generally consists of a strong melt freeze crust below 1000m. Above that elevation, expect to find buried facets, and/or surface hoar (in more sheltered areas), and/or a sun crust on southern aspects. The surface hoar is not widespread, but is responsible for much of the larger avalanches that occurred earlier this week. This layer should be on your radar, as it may be susceptible to rider triggers.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 11th, 2012 9:00AM