Thanks for the heads-up on that, Cathryn. It is interesting. I can hardly believe there is truly NO association between seismic activity that large and that close to the mountain, and volcanism. At least some small degree of magmatic activity is likely to be either a related cause or result of the shaker.

Occasional disclaimer: I am not a professional seismologist or volcanologist.

Michael Williams
Arroyo Grande, CA USA