Mt Saint Helans
Mount St. Helens
Location: Washington, United States
Latitude: 46.20 N
Longitude: 122.18 W
height: 2,549 meters or 8,364 feet - 9,677 feet before May 18, 1980
Type: Stratovolcano
Number of eruptions in past 200 years: 2-3
Latest Eruptions: Between 1660-1700, around 1800-1802, 1831, 1835, 1842-1844, 1847-1854, 1857, 1980-?
Present thermal activity: strong steaming
Nickname: Mount Fuji of the West
Remarks: continuous intermittent activity since 1980 with occasional eruptions of steam and ash; occasional pyroclastic flows; intermittent dome forming.
MSH is considered a young volcano that developed over …
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…erupt in the near future are called dormant volcanoes. Volcanoes that are never expected to erupt again are called extinct. All of the volcanoes in the Cascade Range where MSH is found are dormant volcanoes.
Approximately 50 or so volcanoes erupt every year. The International Association of Volcanology defines active volcanoes as one that has erupted in historic times. Historic can mean 200 years in Hawaii or 3,000 years in the Mediterranean depending if there are historical records.
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