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

Scientists have recorded a significant uptick in earthquakes at the Mount Adams volcano — the largest active volcano in Washington state. Six earthquakes hit the "high threat" volcano in ...

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

Mount Rainier was experiencing "the most significant seismic activity" at the volcano in more than 15 years as an "earthquake ...

Scientists are installing new temporary monitoring equipment around Mount Adams in Washington state amid a spike in seismic activity under the volcano.

Six low-intensity earthquakes rumbled beneath Mount Adams during September, according to the U.S. Geological Survey Cascades Volcano Observatory. That’s an unusual amount of seismic activity at ...

Mount Adams, the long-dormant volcano in Southwest Washington, recently experienced some unusual seismic activity.