What is the name of the volcano that erupted in 1980?  

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pohnpei397's profile pic

pohnpei397 | College Teacher | (Level 3) Distinguished Educator

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In the United States, the most famous volcano to erupt in 1980 was Mount St. Helens in the state of Washington.  This volcano erupted in spectacular fashion on May 18, 1980.  The eruption caused a great deal of devastation in the area around the volcano.  The destruction included the deaths of 57 people.  Ash from the eruption rose roughly 20 miles into the atmosphere and was deposited across a broad range of the West, falling in 11 states.   The victims were killed by falling ash, by heat from part of the eruption that came out laterally, and by lahars caused by the melting of the volcano’s snowcap.  There were other volcanoes that erupted in this year, but Mount St. Helens was by far the most famous.

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crashs1824's profile pic

crashs1824 | (Level 1) Adjunct Educator

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The major volcanic eruption, at least in terms of economic and human impact, 1980 was of Mount St. Helens. Mount St. Helens is a stratovolcano located in Washington state -- a state in the Pacific Northwest region of the United States. At approximately 8:32 A.M. local time on May 18, 1980, a major climatic eruption began with a major 5.1 magnitude earthquake causing one of the largest landslides ever recorded. This landslide touched of a chain of events resulting in a massive blast of volcanic ash and pumice.

This landslide and volcanic blast -- along with pyroclastic flows -- devastated the natural area around Mount St. Helens, caused the death of at least 57 persons, and resulted property damage and cleanup costs exceeding $1.5 billion (U.S.). Ash from the eruption eventually fell and spread across 10 U.S. states. After the 1980 eruption, the elevation Mount St. Helens' summit dropped from 9,760 feet to 8,525 feet.
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