You're thinking of Mount St Helens. From it's Wikipedia entry, it appears like this was the most destructive volcanic eruption in US history. ". . . Fifty-seven people were killed; 250 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. . . "
There are many volcanoes in the Cascade range. The most famous is Mt. St. Helens, which erupted on May 18, 1980, killing 57 people. The largest volcano in the cascade range is Mt. Rainier.
The volcano that erupted in the Cascade Range between 1914 and 1917 is Mount St. Helens. This eruption marked the beginning of a significant period of volcanic activity, characterized by the formation of a new lava dome within the crater. The eruptions during this time were primarily phreatic, resulting in steam-driven explosions. The activity set the stage for the more dramatic eruption of the volcano in 1980.
Mount St. Helens
On May 18, 1980, a major volcanic eruption occurred at Mount St. Helens, a volcano located in the state of Washington, United States.
mount st Helens
Mount St. Helens - Skamania County, Washington
The volcano that erupted in 1970 was Mount St. Helens in Washington state, USA. The eruption occurred on May 18, 1980, resulting in the catastrophic eruption that caused significant damage and loss of life.
Washington is the state home to Mount St. Helens. The volcano erupted in 1980, causing significant destruction and reshaping the landscape of the area. It is considered a semi-active volcano, with continued monitoring for potential future activity.
The California volcano that erupted between 1914 and 1917 is Lassen Peak, part of the Cascade Range. The eruptions began in 1914 and included a series of explosive events that continued until 1921, making it one of the most significant volcanic events in the United States in the early 20th century. Lassen Peak is notable for being the only volcano in the contiguous United States to erupt in the 20th century prior to Mount St. Helens in 1980. The eruptions significantly altered the landscape and contributed to the establishment of Lassen Volcanic National Park.
Mt. St. Helens erupted in 1980 and is still active as a hot ash volcano.
the resting deadly volcano erupted at 8:32 AM
The last composite volcano eruption occurred on March 20, 2010. This volcano eruption took place in Iceland.