Mt. Emmons

On northerlies: we skied steep terrain where the holiday slab was eroded by last week's winds ATL and at low elevations where the slab has lost cohesion from faceting.  Elsewhere, we traveled on mellow terrain with small rollovers and no signs of instability but an obvious slab over weak layer structure.  

On southerlies: Most steep terrain is a stack of melt-freeze crusts lacking a slab.  We didn't encounter any heavily drifted slopes, but the recent slide on a well-drifted rollover in Red Lady Bowl exemplifies potentially problematic terrain.  

One collapse near the valley bottom on a low angle SE aspect. The slabs at this elevation appear mostly faceted away now, but the collapsible crust on this feature preserved propagation potential.

Northerly terrain observations:
Below 10,300', the holiday slab has mostly faceted away, especially in steeper terrain where the snowpack is shallower.  The collapse on a low angle SE suggests you might find a lingering instability where rotting slabs exist above collapsible crusts in steep terrain (Some E or W aspects have collapsible crusts).  

Above 10,300', 45 to 60 cm slabs remain intact and supportive; hard stomping is required to punch through to the weak layer, which did not provide feedback here on low angle terrain.  

Near summit:  The recent northerly winds have eroded the holiday slab.  The snow structure on planar and convex slopes where we traveled consisted of about 25 cm of low density, faceting snow over bedsurfaces from the Thanksgiving cycle; HS is less than 45 cm.  Looking around, there are concave features where I suspect persistent slab structure hasn't been as eroded; we didn't travel on those slopes to verify.