Mount Adams, Washington state's largest active volcano, is witnessing a surge in seismic activity. The seismic activity has ...

Recent increased seismic activity at Mt. Adams has brought state, tribal, and federal leaders together to reassess their ...

David A. Johnston was killed just hours after his last ever picture was taken. The volcanologist from Chicago, US was once one of the principal scientists on the USGS monitoring team. And his interest ...

But as a shield volcano, Kilauea doesn’t have explosive, Mt. St. Helens-type eruptions. Instead, it emits a steady stream of fluid lava that generally flows gently down the side of the mountain ...

This striking satellite photo shows the unusual shape of Spirit Lake, which was transformed into a giant anatomically inaccurate heart by the explosive eruption of Mount St. Helens in 1980.

Rescuers saved three snowmobilers who triggered an avalanche on Mount St. Helens. One man suffered a severe leg injury, but ...

Similarly, the 1980 eruption of Mount St. Helens-just 50 miles from Mount Rainier-triggered a lahar that destroyed over 200 homes and contributed to the deaths of 57 people. In response to the ...

The May 1980 eruption of Mount St. Helens sent ash 12 miles (19 kilometers) into the sky in the first 10 minutes of the explosion. Volcanoes like Mount St. Helens also often release pyroclastic ...