Over 300 earthquakes have occurred at Mount Rainier in Washington State, Washington. This was the largest earthquake swarm ...

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

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

Bill Peterson Revegetating Mt. St. Helen In May 1980, a magnitude 5.1 earthquake caused an avalanche on Mount St. Helen in Washington State. With ...