Avalanche Forecast
Issued: Jan 8th, 2013 8:20AM
The alpine rating is Storm Slabs and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeA lull between storms today but be cautious in your terrain selection as conditions have not improved given yesterdays new snow and last nights winds.
Summary
Weather Forecast
A weak ridge of high pressure will keep things mainly dry today until a frontal system arrives this evening bringing moderate amounts into Wednesday. Some clearing skies can be expected in the eastern regions before clouding over this afternoon.
Snowpack Summary
60 cm of storm snow overlies a variety of surfaces ranging from sun crust on south and west aspects to surface hoar on north and east. The surface hoar buried is largest between 1500-2000m. The mid-pack is well settled and the Nov 6 crust is down 150 to 180cm.
Avalanche Summary
Four avalanches to size 2.0, two size 2.5 and one size 3.0 were down in the highway corridor yesterday. All natural slab avalanches.
Confidence
Intensity of incoming weather systems is uncertain
Problems
Storm Slabs
Weak layers such as surface hoar, sun crust or facets, depending on your aspect and elevation, are now buried 40 to 60cm deep. These are in the range of skier triggering and wider propagation as the slab settles.
Whumpfing, shooting cracks and recent avalanches are all strong inicators of unstable snowpack.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Higher elevations saw strong overnight winds creating wind slabs over buried weak layers.
Avoid freshly wind loaded features.
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 9th, 2013 8:00AM