Far off the Oregon Coast, a restless underwater volcano has been rattling the seafloor with swarms of tiny earthquakes, including a burst that reached roughly 10,000 quakes in a single day. That ...

A 4.5 magnitude earthquake struck about 175 miles off the coast of Bandon on Sunday morning, according to the United States Geological Survey. The quake, which hit just before 2 a.m., did not prompt ...