Volcanoes in the United States that have been active since spring woke up, brushed themselves off, and then went back to sleep. Two volcanoes, one in Alaska and one in Hawaii, are experiencing active ...

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano ...

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

Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington's Mount Rainier but say there is ...

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...

More than 300 tremors were recorded below Mount Rainier over the course of three days. Scientists say they were too weak for ...

Hundreds of earthquakes are detected at or near Mount Rainier each year, with "swarms" typically occurring once or twice ...

Hundreds of small earthquakes have rattled Mount Rainier this week in the largest swarm of tremors in more than a decade.

This is now the largest recorded earthquake swarm at Mount Rainier since seismic monitoring at the volcano began in 1982, the ...

Earthquakes are common at Mount Rainier, happening about nine times every month, the agency said. Swarms of earthquakes ...

Mount Rainier on Tuesday experienced its largest seismic activity since 2009, with a swarm of small earthquakes detected.

Hundreds of small earthquakes were detected at Mount Rainier on Tuesday in the largest such swarm at the active stratovolcano ...