The series of earthquakes is the first major swarm of seismic events since 2009. Is it safe if you're planning on visiting?

A minor, 3.7-magnitude earthquake struck in Southern California on Thursday. It was followed by a larger, 4.3-magnitude quake ...

Volcanoes in the United States that have been active since spring woke up, brushed themselves off, and then went back to sleep. Two volcanoes, one in Alaska and one in Hawaii, are experiencing active ...

A minor, 3.3-magnitude earthquake struck in Northern California on Monday, according to the United States Geological Survey.

More than 300 tremors were recorded below Mount Rainier over the course of three days. Scientists say they were too weak for ...

Scientists with the U.S. Geological Survey and the University of Washington recorded more than 400 minor earthquakes beneath ...

Mount Rainier was experiencing "the most significant seismic activity" at the volcano in more than 15 years as an "earthquake ...

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier ...

A minor earthquake hit Northern California on Monday evening. The United States Geological Survey recorded it. The quake measured 3.5 on the Richter scale. Its epicenter was near Los Banos and San ...