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

The tremors were too weak for humans to feel. But the frequency of them is the most since researches started monitoring the ...

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

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

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

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

“Now, go to Mount Rainier. We have a few earthquakes a week. Most of the earthquakes that are happening at Mount Hood happen within these swarms of activity.

The Axial Seamount, the most active volcano in the Pacific Northwest, has been making headlines lately with signs that it could erupt sometime this year.

Washington is earthquake and volcano country. With all the concern about recent earthquake activity at Mt. Adams and the 45th anniversary of the eruption of Mt. St. Helens what would happen if Mt.

A top-secret development on Mount Rainier came out in the open this morning. There was widespread surprise and excitement when people in Tacoma and Seattle saw a rocket launched from the summit of the ...

According to Iezzi, Mount Rainier is “totally at a state of background activity,” so scientists aren’t particularly worried about it. Nevertheless, the USGS Cascades Volcano Observatory monitors the ...