Avalanche Forecast
Issued: Dec 30th, 2012 9:01AM
The alpine rating is Loose Dry and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing or intensity of solar radiation is uncertain on Tuesday
Weather Forecast
Overnight and Monday: An upper ridge of HIGH pressure will cause temperatures in the alpine to dip to about -16.0 overnight. An inversion is expected to develop in the alpine during the day which may cause temperatures to be near zero at ridge tops with cloud in the valleys. Clear skies may cause some solar warming on steep Southwest thru West aspects. Light Northerly winds and no precipitation.Tuesday: Continued mostly clear skies and valley cloud. Light Northerly winds and no precipitation.Wednesday: Cloud and very light precipitation as a weak front brushes the North of the region.
Avalanche Summary
Loose snow avalanches up to size 1.5 continue to be reported from steep terrain.
Snowpack Summary
Surface hoar continues to grow on all aspects and at all elevations, report from Allen Creek observed up to 20 mm. The 10-20cm of new low density snow has been lightly redistributed by the wind creating wind slabs in isolated locations and burying a small layer of surface hoar or facets. These are sitting on a generally well-settled mid-pack. Deep persistent instabilities (surface hoar and an early November crust, respectively) located in the middle and near the bottom of the snowpack may still be a concern but there's little recent evidence of them being reactive.
Problems
Loose Dry
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 31st, 2012 2:00PM