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

While considered an active volcano, Mount Rainier hasn’t erupted in at least a century, possibly much longer. The U.S ...

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

A Tuesday morning press release from the USGS Cascades Volcano Observatory says the scientists there do not view the earthquake swarm on its own as a cause for concern. The USGS reports no other ...

MOUNT RAINIER, Wash. — A swarm of small earthquakes was detected at Mount Rainier Tuesday morning, according to the U.S. Geological Survey Cascades Volcano Observatory (CVO) and the Pacific ...

"No other changes are apparent at the volcano at this time. (Cascades Volcano Observatory) and @PNSN1 will continue to monitor activity and issue additional notices as needed." ...

The Cascades Volcano Observatory uses information like this to create hazard assessments and hazard maps that they can share with emergency responders to inform the response to future eruptions.

Officials are tracking the largest swarm of earthquakes in more than 15 years at Mount Rainier in Washington. But they say ...