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

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

Hundreds of earthquakes have been detected at Mount Rainier so far Tuesday morning in the largest such swarm at the active ...

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

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

A swarm of small earthquakes were detected at Mount Rainier across Tuesday morning, according to the U.S. Geological Survey ...

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

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

A swarm of small earthquakes was detected beneath Mount Rainier on July 8, 2025, but officials say there is no current threat of an eruption.

The USGS Cascades Volcano Observatory is in an office park in east Vancouver, off Southeast 15th Street, at 1300 S.E. Cardinal Court, Building 10, Suite 100.

May 18th marks the 45th anniversary of the eruption of Mt. St. Helens and the creation of the USGS Cascades Volcano Observatory. This Saturday they are holding ...

A swarm of small earthquakes began early Tuesday morning beneath Mount Rainier, with more than 400 minor tremors recorded as ...