mount st helens 4.3 quake hits near Mt. St. Helens, with 30 aftershocks A 4.3 earthquake hit the Mt.St.Helens area about 10:35 a.m. Monday, followed by 30 afte… byThe Great Pacific Northwest Earthquake -February 14, 2011
mount st helens Swarm of nine earthquakes at Mount St. Helens MOUNT ST. HELENS, Wash. – A series of nine small earthquakes shook an area near Mount S… byThe Great Pacific Northwest Earthquake -January 30, 2011
