With eruptions in 1998, 2011, and 2015, the volcano serves as a perfect laboratory, and experts expect an eruption by the end ...

Long-quiet volcanoes in the Cascades region of the Pacific Northwest are still underpinned by large reservoirs of magma, new ...

Magma build-up activity in the region of a huge underwater volcano named the Axial Seamount just 300 miles off the US coast ...

One of the most active volcanoes in the world sits just a few hundred miles off the U.S. West Coast, and some scientists ...

During the Mount St. Helens eruptions, lahars flowed up to 60 miles destroying 200 homes. Lahars are one of the risks with a Mount Rainier eruption, so many foothill communities prepare.

Around the world, volcanic eruptions are daily geological events, but most of this activity lands low on the Volcanic Explosivity Index, a scale that measures the intensity and magnitude of eruptions.

One volcanologist who has spent time studying the volcano said the devastation its eruption would cause would be "complete and incomprehensible." ...

When Mount St. Helens erupted in 1980, he volunteered to work with the U.S. Geological Survey. “Before I knew it, I was flying in a helicopter into the crater. The first dome-building eruption ...

The center is set to reopen again on May 17 for the 45th anniversary of the Mount St. Helens eruption. Other upcoming events for the nonprofit include the Volcano Naturalist Program, a 12-week ...