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

On Tuesday, hundreds of earthquakes were detected, with depths ranging from 1.2 to 3.7 miles below the summit.

Mount Rainier is an active stratovolcano 45 miles southeast of Tacoma and 60 miles south-southeast of Seattle. Its last ...

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

A swarm of small earthquakes began early Tuesday morning beneath Mount Rainier, with more than several hundred minor tremors ...

A swarm of hundreds of small earthquakes have been detected rumbling deep below Mt. Rainier in Washington State early Tuesday ...

The Pacific Northwest Seismic Network recorded hundreds of small earthquakes at Mt. Rainier on Tuesday morning. The US ...

Mount Rainier National Park in Washington state recorded hundreds of light earthquakes early Tuesday morning, though the ...

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 ...

Hundreds of small earthquakes were detected at Mount Rainier on Tuesday in the largest such swarm at the active stratovolcano ...

Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday.

Hundreds of earthquakes are detected at or near Mount Rainier each year, though typical swarms are smaller than what started ...