The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,410-foot volcano near ...

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

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano ...

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

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

Mount Rainier experienced its largest earthquake swarm on record this week, but seismic activity is now significantly ...

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

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

Mount Rainier is rattled by more than 300 earthquakes. It's the largest swarm in years. The last large earthquake swarm at Mount Rainier occurred in 2009. During that time, more than 1,000 ...

As of July 10, 334 earthquakes had been identified over the course of two days at Washington's Mount Rainier.

Geologists are continuing to monitor Mount Rainier in Washington state days after the first earthquake swarm in more than 15 ...