America's deadliest volcanic eruption took place decades ago. Not only did it cause immense damage and kill dozens, but it ...

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980. Other case studies include the eruption of Mount Etna in Sicily in 1974 and Heimaey eruption in ...

One of the most violent natural disasters of our time, the colossal eruption of Mt. St. Helens in 1980 blasted away an entire mountainside. Over 200 square miles of pristine forest were buried ...

Mount Saint Helens in Washington, which notoriously and cataclysmically erupted in 1980 and had its ash reach ... have been ...

Nearly 45 years after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, ...

Much like in 1980, if we started seeing more frantic rumbling, then the media coverage would become intense, and it could better help the public prepare.

When you hear the word volcano and Washington State you immediately think Mt. St. Helens. The 5.1 magnitude eruption on May ...

The U.S. Forest Service is reviewing ways to prevent Spirit Lake from overflowing by updating or replacing an aging tunnel ...

The very same stratovolcano, Mount St Helens in Washington, erupted in 1980, in what is widely considered the most devastating volcanic disaster in US history. The catastrophic explosion claimed ...

Dramatization of the 1980 eruption of Mount St. Helens. The movie begins with the volcano's awakening on March 20, 1980 and ends with its eruption on May 18.

An extensive volcano glossary can be found at volcanoes.usgs.gov. Above left: Mt. St. Helens, a grande dame among andesitic volcanoes, erupts on July 22, 1980.