From an email sent to us: "Went poking around up on Sacajawea this morning, skied one of the north facing shots off the main summit in every condition from ice to powder. New snow was bonding decently except for in heavily wind loaded areas. On a 40 degree N/NE wind loaded slope, my partner triggered a ~40 foot wide slab, up to two feet in depth. The slab propagated into an adjacent wind loaded pocket, and once it got going, triggered all the fresh snow below it, culminating in a gigantic powder cloud blasting out the scree cone at the base of the gully. My guess is the snow ran 400-500 vert?" No one was caught or injured. Photo: Anon
Advisory Year
Forecast link: GNFAC Avalanche Forecast for Tue Nov 9, 2010