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

Most of the U.S. volcanoes that have been making themselves known since spring woke up a bit, shook themselves off and then ...

Washington's ShakeAlert earthquake early warning network will officially go live statewide on May 4, but won't be fully completed until 2025.

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

Earlier this month, Washington joined California and Oregon in using the U.S. Geological Survey’s ShakeAlert system for earthquake early warning. The program has been in the works since 2006.

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 ...

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