Avalanche Forecast
Issued: Feb 25th, 2012 9:21AM
The alpine rating is Wind Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Good
Weather Forecast
Sunday: Mostly sunny, with light northerly winds and temperatures reaching -7. Monday & Tuesday: Expect the clear weather to give way to increasing clouds and flurries, and strong southwesterly winds will ease with the cloud growth. Temperatures should reach -7 in the afternoons.
Avalanche Summary
Natural avalanches up to size 2.0 and rider triggered up to size 1.0 have been reported in the past 24 hrs.
Snowpack Summary
Between 10-25cm of new snow fell in the most recent storm pulse. This adds to the previous storm snow, with 45-60 cm being an average amount over the mid February layers. These layers are a strong melt freeze crust at lower elevations (below 1000m) and wind effected snow higher in the alpine while between these elevations, the interface varies wildly from facets, surface hoar, sun crust or wind press. The surface hoar is not widespread but is responsible for much of the recent avalanche activity. With the additional wind loading, pockets as deep as 90cm are possible on lee features. Recent changes in wind direction have exacerbated the wind slab issue, with slabbing now reacting on south facing terrain features. The mid and lower snowpack is generally well settled and strong.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 26th, 2012 8:00AM