A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

An earthquake 'swarm' comprised of hundreds of miniature earthquakes hit Mt. Rainier and the Cascade mountain in July.

Volcanoes in the United States that have been active since spring woke up, brushed themselves off, and then went back to ...

A 7.3 magnitude earthquake struck off the coast of Alaska on July 16, 2025. While significant, the 1964 Prince William Sound ...

Seismicity has decreased” from 30 events per hour at the peak to a few per hour as of Saturday morning, the U.S. Geological ...

A magnitude 7.3 earthquake struck Alaska on Wednesday afternoon and a tsunami warning was canceled two hours later for the ...

This is now the largest recorded earthquake swarm at Mount Rainier since seismic monitoring at the volcano began in 1982, the ...

One of the most famous mountains in Washington, Mount Rainier, has been rumbling over the last day due to the amplified ...

Earthquakes today in the U.S. could be left over from seismic activity in the 1800s, scientists have found. In a new study, published in the Journal of Geophysical Research: Solid Earth ...

The United States and Japan concluded a weeklong disaster-response exercise that simulated a magnitude 7 earthquake, the ...

The researchers found that approximately 30% of all earthquakes from 1980 to 2016 near the Missouri-Kentucky border, all magnitude 2.5 or greater, were likely aftershocks from the three major ...