Swarms — or clusters of earthquakes that occur in the same area in quick succession — are relatively common on Mount Rainier.

More than 400 earthquakes rattled Washington's Mount Rainier over just 12 hours on Tuesday, sparking fears that the ...

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

MT. RAINIER, Wash. — A swarm of small earthquakes was detected at Mount Rainier Tuesday morning, according to the U.S. Geological Survey Cascades Volcano Observatory (CVO) and the Pacific Northwest ...

Notably, Mount Rainier is the second-most seismically active volcano in the northern Cascade Range and is considered ...

Baseball: Our Mariners did something special as the Yankees kicked their asses. They kicked their own. With his 36th homer of ...

A swarm of earthquakes under the largest volcano in the Cascade Mountain Range has some people wondering if it's rumbling ...

The U.S. Geological Survey said it and other agencies were monitoring the situation and would issue additional alerts "as needed." ...

Hundreds of small earthquakes rattled one of the most dangerous volcanos in the US Tuesday, setting off fears it could be ...

Retired National Park Service geologist Jon Riedel told The News Tribune, "The trends were clear at Mount Rainier: that the ...