This is called the Cascadia Subduction Zone. According to the Washington State Department of Natural Resources (DNR), earthquakes happen in Washington every day, but most are too small to be felt.

Recent volcanic activity across the Pacific Ring of Fire has raised alarms among scientists and volcanologists, with several ...

Mount Rainier was experiencing "the most significant seismic activity" at the volcano in more than 15 years as an "earthquake swarm" hit the site starting on Tuesday.

A researcher with GPS equipment found Mount Rainier is now about 10 feet shorter than previously ... short of the summit at 29,032 feet but still well within the so-called death zone. Advertising.

The hundreds of Mount Rainier earthquakes detected Tuesday marked the largest seismic swarm at the active stratovolcano since 2009, the USGS said.

The last large earthquake swarm at Mount Rainier occurred in 2009 and lasted for three days. The swarm resulted in more than 1,000 earthquakes and the largest was of a 2.3 magnitude, according to ...

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington's Mount Rainier but say there is no indication that the cluster of quakes is cause for ...