Quick report
The cat road is icy and hard, but that makes it a quick skin. Snow gradually improved to decent riding above about 1600 feet, with good snow above the powder hut. Noted a few other localized slides on steep features on the Notch side, no other red flags (other than the massively large avalanche).
Avalanche
Sunny side of Notch bowl, slid across the entire steep part of the lower face. Did not see any ski tracks on that side of the bowl, so it appears to be natural.