Mt. Fitzherbert
USGS Weekly Update 2008-Mar-07 11:37
RECENT OBSERVATIONS: There was no field work done at Mount St. Helens this week. The most significant development was a small, magnitude-2.0 earthquake on Tuesday at 11:31 PST, and very small earthquake swarm on Thursday, starting with a roughly magnitude 1.2 event at 2:16 PM PST and followed by several smaller events over a seven-minute period. There were no tilt changes assocaited with this swarm.