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

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

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

Volcano watchers said Saturday the Mount Rainier earthquake swarm rates continued to decrease. The Cascades Volcano Observatory and Pacific Northwest Seismic Network recorded 464 events since the ...

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

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

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier ...

The most recent seismic storm at Mount Rainier has hit a new milestone as scientists continue to monitor activity at the ...

Over 200 earthquakes have been detected around Mount Rainier, Washington, raising eyebrows during the biggest swarm of ...

A swarm of small earthquakes began early Tuesday morning beneath Mount Rainier, with more than several hundred minor tremors ...

The activity began just before 1:30 a.m. on July 8, with hundreds of earthquakes recorded at depths ranging from over a mile ...