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Earth Sciences

Plume of smoke comes from the crater of Mount St. Helens in 1982
Spring 2022

Large volcanic eruptions 1800–present in the United States*

 

*as delineated by its current international and state boundaries

 

1800 — Mount St. Helens (Washington)  The eruption was seen by Native Americans. Oral tradition of NE Washington tribes noted many people starved to death the winter following the eruption.

 

1812 — Augustine Volcano (Alaska)  Augustine has had six significant eruptions: 1812, 1883–1884, 1935, 1963–1964, 1976, and 1986. The 1883 eruption produced a tsunami.

 

1825 — Isanotski Peaks (Alaska)  Also known as Isanotski Volcano, locally as “Ragged Jack,” is a multi-peaked mountain on Unimak Island, the easternmost Aleutian Island. Other … » More …