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The Mount St. Helens Visitor Center at Silver Lake, about 30 miles (48 km) west of Mount St. Helens and five miles (8 km) east of Interstate 5 (outside the monument), opened in 1987 by then-Vice President George H.W. Bush. The center was formerly operated by the U.S. Forest Service and has been operated by Washington State Parks since October 2007.
Mount St. Helens showed significant activity on March 8, 2005, when a 36,000-foot (11,000 m) plume of steam and ash emerged—visible from Seattle. [43] This relatively minor eruption was a release of pressure consistent with ongoing dome building. The release was accompanied by a magnitude 2.5 earthquake.
Per the Forest Service, the Mount St. Helens National Volcanic Monument is a 110,000-acre designation within the Gifford Pinchot National Forest. It was established in 1982 for the purposes of ...
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 .
A conifer forest will return to Mount St. Helens in its own time. On a debris-avalanche deposit totally devoid of life after May 18, 1980, plants are slowly taking hold of the landscape.
More than 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption, according to the U.S. Geological Survey.
It was established in the summer of 1980, after the eruption of Mount St. Helens. [2] The observatory is named for United States Geological Survey (USGS) volcanologist David A. Johnston, who was killed by the 1980 eruption of Mount St. Helens. [3] The observatory's current territory covers Oregon, Washington, and Idaho.
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