Mt. Fitzherbert

Recent observations: At 9:08 a.m. PDT (1608 UTC) a large rockfall from the growing lava dome corresponded with a magnitude 3.1 earthquake, sending a flow of rock and dust from the new dome. Pilots reported a plume to 16,000 to 20,000 feet. Remote camera views from six minutes after the event showed mostly steam and minor ash plumes in the crater. There is no evidence of an explosion associated with this event. Events such as this are expected during lava dome growth. Weather permitting, scientists will be in the field later this week.