New research offers clues as to why Mount St. Helens is one of the most explosive volcanoes in the Cascade range and why it stands apart from the chain of other Cascade volcanoes. Scientists from the ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have recorded the "largest" earthquake swarm at Mount Rainier in Washington state since 2009, the U.S. Geological ...

Add Yahoo as a preferred source to see more of our stories on Google. More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano since ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Whenever Mt. Hood erupts, Portland will be glad to have David George. As a U.S. Geological Survey mathematician, George models landslides and lahars at the Cascades Volcano Observatory in Vancouver, ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from James Genero IV, EarthScope ...

On the flanks of Washington State Mount Rainier, a spike in seismic rumbling has revived an old, unsettling question for the Pacific Northwest: what happens when the region’s most dangerous volcano ...

The eruption of a Hawaii volcano has people warily eyeing volcanic peaks on America's West Coast. The West Coast is home to an 800-mile (1,300-kilometer) chain of 13 volcanoes from Washington state's ...

To the east of Mount Rainier are the remains of a once-mighty Cascade volcano. In the hills outside of Naches, Washington, at the foot of Mount Rainier are the remains of a much older volcano. Join ...

Volcanoes, awe-inspiring natural phenomena formed by the Earth’s tectonic processes, dot the globe in regions where tectonic plates converge or diverge. The United States holds the record for the most ...