Route & General Observations
Santa’s Helper is finding low probability high consequence avalanche conditions around the greater Summit Lake zone. Consistent mid 20’s ect failures on a cracker crust deep in the snowpack at multiple aspects and elevations 2-4000ft. Weak layer is about 2-3 inches above the stout crust protecting the basal facets on the ground. Clean shears with little propagation. Many large naturals have recently occurred, yet many slopes with similar aspect/loading as ones that have avalanched are lurking untouched. Much of the visible avy debris contains blocks of intact slab. Winds have created soft to stout slabs, supportable and trap crusts in exposed terrain and along ridgetops.
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||No|
Localized cracking of windslab
Blue, calm, low teens.
Variable from blower pow to wind effect. Some soft slab, some firm supportable wind slab.
20 -40" inches general depth 2000-4000ft 9" settlement in 72 hours post Solstice storm