Avalanche Forecast
Issued: Mar 9th, 2013 8:37AM
The alpine rating is Persistent Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain on Tuesday
Weather Forecast
Sunday: A mix of sun and cloud with a chance of flurries. The freezing level climbs to 1200 m during the day. Winds are light to moderate from the southwest. Monday: A mix of sun and cloud. Temperatures are a degree or two cooler with the freezing level around 1000 m. Winds ease to light from the west-southwest. Tuesday: Moderate snow. The freezing level could rise to around 1500 m and winds increase to moderate or strong from the southwest.
Avalanche Summary
Cornice falls have triggered a few size 2-3 slabs on steep north-facing slopes over the past few days. There are also reports of loose snow avalanches triggering slabs up to size 2.5 in steep sun-exposed terrain.
Snowpack Summary
Sun crusts have developed on most solar exposed aspects. Surface hoar and surface facets are growing in most areas, and there is not much wind to disturb the new growth. The recent storm snow is settling, but storm slab releases are still possible. The weak layer of surface hoar that was buried around February 12th may be triggered by storm snow avalanches in motion, or by cornice fall and other large triggers. The strong solar radiation may trigger some cornice fall or release moist loose snow in steep terrain that may step down to one of the deeper weak layers.
Problems
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 10th, 2013 3:00PM