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A USGS team determined in the last week of April that a 1.5 mi-diameter (2.4 km) section of St. Helens's north face was displaced outward by at least 270 ft (82 m). [20] For the rest of April and early May, this bulge grew by 5 to 6 ft (1.5 to 1.8 m) per day, and by mid-May, it extended more than 400 ft (120 m) north. [ 20 ]
David Alexander Johnston (December 18, 1949 – May 18, 1980) was an American United States Geological Survey (USGS) volcanologist who was killed by the 1980 eruption of Mount St. Helens in the U.S. state of Washington.
The 2023 South Coldwater Slide is a mudslide that occurred in May 2023 near Mt. St. Helens. The volume of debris, and subsequent destruction of a bridge, closed off Washington State Route 504 and access to the Mount St. Helens National Volcanic Monument.
Harry Glicken (March 7, 1958 – June 3, 1991) [1] was an American volcanologist.He researched Mount St. Helens in the United States before and after its 1980 eruption, and was very distraught about the death of volcanologist David A. Johnston, who was Glicken's mentor and supervisor in Spring 1980 at Mount St. Helens.
Mount St. Helens: 5 United States: 1980 1980 eruption of Mount St. Helens: 56 Mount Etna: 2 Italy: 1843 [6] 56 La Soufrière: 4 Saint Vincent and the Grenadines: 1812 [37] 50 Mount Usu: 4 Japan: 1822 [38] 43 Mount Unzen: 1 Japan: 1991 [39] 40 Dieng Volcanic Complex: 2 Indonesia: 1928 [30] 39 Taal: 4 Philippines: 2020 2020–2022 Taal Volcano ...
Blackburn first became interested in the possibility of an eruption at Mount St. Helens in March 1980, when a series of earthquakes rocked the volcano. [8] Having already climbed the mountain, he was intrigued by the situation [8] and was eventually assigned to document the activity of the volcano due to his outdoor skills and his meticulousness.
Harry R. Truman (October 1896 – May 18, 1980) was an American businessman, bootlegger, and prospector.He lived near Mount St. Helens, an active volcano in the state of Washington, and was the owner and caretaker of Mount St. Helens Lodge at Spirit Lake near the base of the mountain.
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.