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Mount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] in the Pacific Northwest region of the United States.
Nov 17, 2024 · Mount Saint Helens, volcanic peak in the Cascade Range, southwestern Washington, U.S. Its eruption on May 18, 1980, was one of the greatest volcanic explosions ever recorded in North America.
On May 18, 1980, the Mount St. Helens became the largest and most destructive volcanic eruption in U.S. history. By the end of its cycle of fire and fury, 57...
On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980, at 8:32 am.
Mar 9, 2018 · Mount St. Helens is a volcano located in southwestern Washington state. It’s the most active volcano in the Cascade Range, a mountain range that extends from British Columbia through...
Sep 30, 2024 · Functioning as the gateway to the National Forest Service monument, Mount St Helens Visitor Center will entice you with scientific displays, a movie theatre and educational opportunities. Summer: See detailed hours below - Operating hours vary. Winter: Closed Sept. 30, 2024 - through mid-May 2025.
A vast, gray landscape lay where once the forested slopes of Mount St. Helens grew. In 1982 the President and Congress created the 110,000-acre National Volcanic Monument for research, recreation, and education.
Mount St. Helens is primarily an explosive dacite volcano with a complex magmatic system. The volcano was formed during four eruptive stages beginning about 275,000 years ago and has been the most active volcano in the Cascade Range during the Holocene.
Nov 14, 2024 · In May 1980, a magnitude-5.1 earthquake accompanied by an avalanche flipped the switch on a volcano in Washington state. With pressure suddenly removed from the magma below, Mount St. Helens ...
Mount St. Helens, located in Washington State, is the most active volcano in the Cascade Range, and it is the most likely of the contiguous U.S. volcanoes to erupt in the future. Volcanologists have recognized and named four stages of volcanic activity—Ape Canyon, Cougar, Swift Creek, and Spirit Lake—separated by dormant intervals.
