Mount Rainier is an active stratovolcano 45 miles southeast of Tacoma and 60 miles south-southeast of Seattle. Its last eruption was "a light dusting of ash" in 1894, the USGS said in a report. Large eruptions haven't occurred for more than 1,000 years.

One of the most famous mountains in Washington, Mount Rainier, has been rumbling over the last day due to the amplified seismic activity.

Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday.. A swarm of small earthquakes was detected under the mountain ...

On April 13, 1949, at 11:55 am, Tacoma was hit by a magnitude 7.1 earthquake. Bob Anderle (far right) looks down at the broken gable and the facing bricks that fell from one of the dormer windows ...

A spike in earthquakes at Mount Adams, a volcano in Washington state, prompted scientists to install additional monitoring instruments to assess the seismic activity.

For U.S. earthquake scientists, Japan's 'megaquake' warning renewed worries about when and how to warn the public if they find clues that the 'big one' might be coming for the West COast.

READ MORE: Catastrophic volcano could soon erupt on the Pacific Northwest More than 400 earthquakes rattled Washington's Mount Rainier over just 12 hours on Tuesday, sparking fears that the catastrophic volcano could soon erupt. The US Geological Survey ...

Nisqually earthquake shook for under a minute but triggered decades of political aftershocks that led Seattle to where it is today.