Answer:
Mount St. Helens is most famous for its catastrophic eruption on May 18, 1980 at 08:32 Pacific Standard Time. The eruption was the most deadly and economically destructive volcanic event in the history of the United States.
On May 18, 1980, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states.
The modern name, Mount St. Helens, was given to the volcanic peak in 1792 by seafarer and explorer Captain George Vancouver of the British Royal Navy. He named it in honor of fellow countryman Alleyne Fitzherbert, who held the title 'Baron St. Helens'.
