The BriefMount Rainier's recent seismic swarm has surpassed 2009 records, with 391 events since July 8.Scientists report ...

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...

A significant earthquake swarm was detected beneath Mount Rainier in Washington State, marking the most intense seismic activity in the area since 2009. Over 300 earthquakes have occurred since the ...

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

Officials are tracking the largest swarm of earthquakes in more than 15 years at Mount Rainier in Washington. But they say ...