MOUNT ST. HELENS

LOCATION

HEIGHT

HISTORY OF ERUPTIONS

• May 18, 1980 first eruption in continental United States at Mount St. Helens.
• 1980-1986 many small eruptions take place.
• 2004-2008 many small eruptions and seismic activities take place.

MOUNT ST. HELENS FACTS

• Spring 1980- rising magma pushed the volcano's north flank outward 5 feet per day
• March 1980- a magnitude of 4.2 earthquakes signaled the reawakening after 123 years
• September 2004- Mount St. Helens reawakened, and it erupted continuously until January 2008.