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Mount St. Helens
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Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It lies 52 miles northeast of Portland, Oregon, and 98 miles s
3,000 ft (900 m) high steam plume on May 19, 1982, two years and a day after the 1980 major eruption that created the visible gap on the north side of
3,000 ft (900 m) high steam plume on May 19, 1982, two years and a day after the 1980 major eruption that created the visible gap on the north side of the mountain
Mount St. Helens pictured the day before the 1980 eruption, which removed much of the northern face of the mountain, leaving a large crater
Mount St. Helens pictured the day before the 1980 eruption, which removed much of the northern face of the mountain, leaving a large crater
Aerial view with Mount Adams in background
Aerial view with Mount Adams in background
East Dome on the east flank of Mount St. Helens in 2013.
East Dome on the east flank of Mount St. Helens in 2013.
2004–2008 volcanic activity of Mount St. Helens
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The 2004–2008 volcanic activity of Mount St. Helens in Washington, United States was a documented continuous eruption, which occurred in the form of gradual extrusion of magma. Starting in October 200
Mount St. Helens
…rapidly. Six years after the eruption, most lakes in the area had returned to their normal state. After its 1980 eruption, the volcano experienced continuous volcanic activity until 2008. Geologists predict that future eruptions will be more destructive, as the configuration of the lava domes requires more pressure to erupt. However…
Mount St. Helens sent a plume of volcanic ash and steam to 10,000 feet (3,000 m) above sea level in its October 1, 2004 eruption.
Mount St. Helens sent a plume of volcanic ash and steam to 10,000 feet (3,000 m) above sea level in its October 1, 2004 eruption.
After releasing a cloud of steam on October 2, dust from landslides inside the crater could be observed for the rest of the afternoon.
After releasing a cloud of steam on October 2, dust from landslides inside the crater could be observed for the rest of the afternoon.
October 5: Steam and ash eruption, seen from the Johnston Ridge Observatory.
October 5: Steam and ash eruption, seen from the Johnston Ridge Observatory.
A steam plume rises from the mountain in December 2004
A steam plume rises from the mountain in December 2004