Avalanche Forecast
Issued: Feb 16th, 2012 9:00AM
The alpine rating is Wind Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Forecast snowfall amounts are uncertain on Saturday
Weather Forecast
Overnight snowfall is expected to total about 2-5 cm in most of the region. Another ridge is forecast for Friday that should bring mostly clear skies and light winds during the day. The next Pacific frontal system is expected to move inland from the coast during the evening. Moderate snowfall combined with moderate southwest wind is expected during the morning, turning to flurries in the afternoon. Forecast amounts are about 5-10 cm total. Light flurries are expected to continue on Sunday.
Avalanche Summary
Skiers and riders have triggered thin soft windslabs in the alpine up to size 1.0 . Natural ice fall and a natural cornice fall to size 2.5 were reported from the region. The cornice fall released a slab, but there was not much propagation.
Snowpack Summary
The new snow layer above the February 09 surface hoar is now about 10-15 cm thick. Some areas have reported that the surface hoar had grown to 50 mm before being buried. Some thin windslabs have developed due to down flowing air on large glaciated features. A melt-freeze crust has developed on solar aspects at all elevations, and on all aspects below about 1400 metres. The mid-pack is generally well settled. There is some concern that large loads like cornices may trigger the Jan. 20th facet layer. Some shallow snowpack areas may continue to have a weak layer of basal facets near the ground.
Problems
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Feb 17th, 2012 9:00AM