We dug a pit at 2200′ on an East facing slope on the Tuckerman ravine trail to check out the persistent slab problem at lower elevations. Under the recently deposited snow, there were several layers of medium and large grain facets and a couple decomposing crust layers. The test results showed Q3 non-planar fracturing. In our ECT the fracture did not propagate and the column broke vertically 1/2 way across.
Thinking outside of the forecast area, it could be possible to find a recently wind loaded slope on lower elevation terrain where these persistent grains could be more reactive.