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