Hundreds of small earthquakes have been detected at Mount Rainier in Washington in an earthquake swarm, the largest number seen in more than 15 years, according to geologists.

A major water pipeline upgrade is set to begin this summer in Corvallis and will replace a vulnerable pipeline with a larger, ...

A powerful underwater volcano known as Axial Seamount off the Oregon coast may erupt. Though scientists say it poses no tsunami risk, its proximity to the Cascadia subduction zone raises concern.

A map of bathymetry—or underwater topography—of Axial Seamount, an active volcano some 300 miles off the coast of Oregon. NOAA Oregon’s most active underwater volcano could erupt this year ...

In the depths of the Pacific Ocean, 470 kilometers off the Oregon coast, a drama is unfolding. Axial Seamount, one of the most active underwater volcanoes in the world, is swelling with magma.

Dozens of offshore aftershocks followed a magnitude-7.0 earthquake off the coast of Northern California that led to a brief tsunami warning. Stream Los Angeles News for free, 24/7, wherever you ...

A map from the U.S. Geological Survey shows where recent earthquakes have occurred in Northern California. Multiple aftershocks have rattled the area after a 7.0 magnitude quake hit the region on ...

A map provided by the U.S. Geological Survey (USGS) shows the nearly 600 miles of northern California and southern Oregon coastline under a tsunami warning after a magnitude 7.0 earthquake rattled ...

This live-updating map shows the location of the 7.0-magnitude earthquake off the Northern California coast on Thursday, Dec. 5. Click on the legend button at bottom right for more information.

PORTLAND, Ore. (KOIN) — A magnitude 2.6 earthquake struck off the coast of Oregon early Thursday morning, according to the United States Geological Survey. Officials said the quake happened ...