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 ...

The activity began at 1:29 a.m. on July 8 and was detected by the Cascades Volcano Observatory (CVO) and the Pacific Northwest Seismic Network (PNSN). Researchers said the ongoing swarm is larger than ...

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

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

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

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

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

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.

Mount Rainier saw a swarm of hundreds of small earthquakes that started early Tuesday morning.The activity began just before 1:30 a.

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 ...

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.