From Stefan Lofgren, NPS, Mt. R Climbing blog:
On the way up, I saw one of the largest ice-avalanches from Nisqually Ice Fall that I have ever seen. It went clear from about 11,200 feet to about 6,300 on the Nisqually. Amazing white powder cloud. It's an obvious good thing to remember that we're not "safe" from ice fall hazard on the lower Nisqually.