Thirty-one years ago, John Ewert was a college graduate fascinated with Mount St. Helens. Today, he's the new scientist in charge of the U.S. Geological Survey's Cascades Volcano Observatory in ...

A group of international scientists gathered at the Cascades Volcano Observatory this week to learn about volcano hazard monitoring techniques they can bring back to their home countries. The Cascades ...

The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years. Yet, more ...

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano since 2009. As of Thursday, July 10, 334 earthquakes had been identified at ...

VANCOUVER, Wash. — More than 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption, according to the U.S.

SKAMANIA COUNTY, Wash. — Over the past three months, there have been over 400 reported earthquakes at Mount St. Helens, but researchers at the Cascade Volcano Observatory said Wednesday the elevated ...

Six low-intensity earthquakes rumbled beneath Mount Adams during September, according to the U.S. Geological Survey Cascades Volcano Observatory. That’s an unusual amount of seismic activity at the 12 ...

VANCOUVER, Wash. — About 400 earthquakes have rumbled under Mount St. Helens since mid-July, the largest chain of shakes since the volcano finished erupting in 2008, the U.S. Geological Survey ...

Six low-intensity earthquakes rumbled beneath Mount Adams during September, according to the U.S. Geological Survey Cascades Volcano Observatory. That’s an unusual amount of seismic activity at the 12 ...

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano since 2009. As of Thursday, July 10, 334 earthquakes had been identified at ...