PORTLAND, Ore. - An earthquake with a magnitude of 4.5 shook the Mount Hood area early Saturday but there were no reports of damage or injuries. Bill Steele of the University of Washington's Pacific ...

Small earthquakes have rocked the active volcano Mt. Rainier in the Cascade Mountain Range this month, sending shockwaves around the 14,410-foot mountain. The United States Geological Survey reported ...

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier but say there is no indication that the cluster of quakes is cause for ...

A future mega-earthquake in the Pacific Northwest could lead to the “Big One” along the San Andreas fault in California—or vice versa.

On July 8, Mount Rainier began to stir. Seismic activity occurs at all of the Pacific Northwest’s Cascade Volcanoes to some extent, but this time was different. What began as a few faint tremors soon ...

A swarm of small earthquakes is still shaking Mount Rainier, marking the most significant seismic activity at the Cascade volcano in decades. The U.S. Geological Survey’s Cascades Volcano Observatory, ...