1980 eruption of Mount St. Helens - Wikipedia
On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took …
1980 Cataclysmic Eruption | U.S. Geological Survey - USGS.gov
2023年11月7日 · 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.
Footage of the 1980 Mount St. Helens Eruption - YouTube
2017年9月29日 · On May 18, 1980, the Mount St. Helens became the largest and most destructive volcanic eruption in U.S. history. By the end of its cycle of fire and fury, 57 people had died. From the...
Mount Saint Helens | Location, Eruption, Map, & Facts | Britannica
2024年11月17日 · Mount Saint Helens, volcanic peak in the Cascade Range, southwestern Washington, U.S. Its eruption on May 18, 1980, was one of the greatest volcanic explosions ever recorded in North America. A total of 57 people and thousands of animals were killed in the event.
Mount St. Helens erupts - HISTORY
2010年2月9日 · At 8:32 a.m. PDT on May 18, 1980, Mount St. Helens, a volcanic peak in southwestern Washington, suffers a massive eruption, killing 57 people and devastating some 210 square miles of...
Mount St. Helens’ 1980 Eruption - USGS.gov
Forty years ago, after two months of earthquakes and small explosions, Mount St. Helens cataclysmically erupted. A high-speed blast leveled millions of trees and ripped soil from bedrock. The eruption fed a towering plume of ash for more than nine hours, and winds carried the ash hundreds of miles away.
1980 Eruption Of Mount St. Helens 'Seemed Apocalyptic' : NPR
2020年5月18日 · Howard Berkes covered the 1980 eruptions of Mount St. Helens for NPR and has returned to the volcano for multiple stories over the years. He recalls the massive blast and its aftermath.
10 Ways Mount St. Helens Changed Our World - USGS.gov
The 1980 Mount St. Helens eruption inspired a new generation of research on Cascades volcanoes throughout Washington, Oregon, and California. Scientists documented their eruption histories, identifying specific hazards and areas that are at risk during future eruptions.
World of Change: Devastation and Recovery at Mt. St. Helens
The 1980 eruption of Mt. St. Helens — which began with a series of small earthquakes in mid-March and peaked with a cataclysmic flank collapse, avalanche, and explosion on May 18 — was not the largest nor longest-lasting eruption in the mountain’s recent history.
Mount St. Helens 40th Anniversary — The 1980 Eruption
Forty years ago, on May 18th, 1980, Mount St. Helens produced the largest observed eruption in the coterminus United States. This eruption had profound impacts on human life and the science of volcanology, as well as on hazard preparedness, communication, and forecasting.