Observed the avalanche debris, but not the avalanche itself.
Do not know the date of the avalanche, but the debris was present when we visited on 5/23, and was not when we visited on 4/4, so was sometime between those dates. Best guess would be the warming period around 4/15.
From scanning the avalanche debris, it appeared that it was a climax / glide avalanche initiating from the cliffs at ~4,200'. The area immediately below the cliffs was bare, while the surrounding area still had 2-3' snowpack depth, so guessing that the entire snowpack slid to bare ground. Trees up to 2' diameter had been snapped off, and were deposited on top of the road, where the avalanche lost energy & stopped, although it certainly could have killed someone if they had been passing on the road at the time.