Avalanche Forecast
Issued: Apr 13th, 2013 10:02AM
The alpine rating is Storm Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to limited field observations
Weather Forecast
Sunday: Expect mostly cloudy skies, with a chance of flurries. Â Alpine temperatures should reach around -6 with freezing levels at 1400m and light northeasterly winds.Monday/Tuesday: Expect a clearing trend with scattered clouds, alpine temperatures reaching -5 and light northeasterly winds becoming gusty in the afternoons.
Avalanche Summary
Avalanche observations have been limited in the last few days. We do have a report of a skier triggered event from the Duffey area: see the link below to the incident database.
Snowpack Summary
10-25cm of new snow has fallen at higher elevations accompanied by light to locally moderate south/southwest winds creating new windslabs in lee locations at treeline and in the alpine. The interface of the new snow is predominantly crusts (sun, wind, meltfreeze) and the bonds are poor in some locations.The previous storm (Wednesday) was accompanied by moderate to strong south/southwest winds which left variable snow distribution in exposed areas near ridgetop with dense wind slabs forming in lee and cross-loaded features. These slabs are now buried, but may still be reactive to heavy triggers or in specific locations. Up to 75cm below the surface you will likely find a melt-freeze crust from previous sunny weather. At the same interface, spotty surface hoar is still being reported in some high, north facing slopes.Cornices are huge and have grown new tabs under the current conditions.
Problems
Storm 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: Apr 14th, 2013 2:00PM