Mount St. Helens was once a beautiful, symmetrical example of a stratovolcano in the Cascades mountain range in southwestern Washington, rising to 9,600 feet (3,000 meters) above sea level. Then
Mount St. Helens in Washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. Ash from the volcanic eruption fell as far away as Minnesota. Seismic activity at
Mount St. Helens, Washington, is the most active volcano in the Cascade Range. Its most recent series of eruptions began in 1980 when a large landslide and powerful explosive eruption created a large crater, and ended 6 years later after more than a dozen extrusions of lava built a dome in the crater.
Mount St. Helens’ most recent period of eruptions lasted from 2004 to 2008, although its most devastating modern eruption occurred in 1980.On May 18 of that year, Mount St. Helens erupted, causing a debris avalanche which took off the top 1,300 feet …
Mount St. Helens Succession Collection This collection consists of 235 photographs in a study of plant habitats following the May 18, 1980 eruption of Mount St. Helens. Audio recording of the May 18, 1980 eruption Recorded 140 miles (225 km) southwest of the mountain.
Parent range: Cascade Range
The early history of Mount St. Helens is poorly known, and the initial stage, called Ape Canyon, covers a long timespan. During this stage, lava domes erupted just west of the present volcano in two distinct periods—one from 275 to 250 thousand years ago ( ka ) and a second from 160 to 35 ka.
An ash plume billows from the crater atop Mount St. Helens hours after its eruption began on May 18th, 1980, in Washington state. The column of ash and gas reached 15 miles into the atmosphere
On March 16, 1980, the first sign of activity at Mount St. Helens occurred as a series of small earthquakes. On March 27, after hundreds of additional earthquakes, the volcano produced its first eruption in over 100 years.
Jan 26, 2011 · Produced by Stephen M. Wessells. USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens.
This 1981 U.S. Forest Service film documents the May 18th, 1980, earthquake at Mount St. Helens, in the Cascade Range of Washington state, which caused a volcanic eruption that killed 57 people
Mount St. Helens erupted several times in the months after the big blast May 18, 1980, as seen in this photo taken from the cockpit of a Cessna 150. Courtesy of Peggy Short-Nottage.
This is a SHORT VERSION of the 1980 documentary about the eruption of Mount St. Helens. Mount St. Helens is most notorious for its major 1980 eruption, the deadliest and most economically destructive volcanic event in the history of the United States.