In Mill Creek, another persistent slab looking fresher than the rest was observed by Chris B. We're thinking it failed late this week during another spike in winds running nearly 1,000' and stacking up a decent debris pile in the run out -- Check out his ob, here!
It's straight up tricky out there, here's the set-up -- Weak, sugary facets that formed during January are now protected under a dense, cohesive slab between 1 and 4' deep. It’s strong snow over weak snow and that’s a dangerous combo. The challenge is that the obvious clues to instability may be seen and we can trench multiple sets of tracks on a slope without triggering an avalanche. But all we need to do is find a weakness where the slab and weak layer are susceptible to our additional weight as a rider, maybe around a rock outcropping or tree, collapse the pack, and trigger the avalanche.
This problem isn’t everywhere, but when you find it, it’s unpredictable and hard to manage. Complex slopes that are steep, rocky, and shallow on the north half of the compass are still off the terrain table. I can not outsmart this problem, so avoidance is my go-to tool for this dragon.

Above, on a north facing, wind-drifted slope near 11,000' with about 145cm of snow, you can see a cohesive slab sitting over our weak, continental facets where our recent human-triggered and natural avalanche are failing.