The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,410-foot volcano near ...

Geologists are continuing to monitor Mount Rainier in Washington state days after the first earthquake swarm in more than 15 ...

A magnitude 2.3 earthquake was recorded under Mount Rainier on Wednesday, the strongest yet in a swarm of over 229 quakes this week. USGS says there's no signs of impending eruption.

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

A swarm of more than 300 earthquakes has now been recorded at Mount Rainier. There have been 334 quakes recorded since the swarm began on July 8, making this swarm the largest on record at Mount ...

In the preceding week, small earthquakes were detected at Mount Rainier and Mount St. Helens, but the activity was "consistent with background activity levels in the Cascade Range." ...

[It} actually has quite a few deep earthquakes that look like magma is either coming into the system or is cooling under there,” Thelen explained. “Now, go to Mount Rainier.

The events on Mount St. Helens 45 years ago feel like yesterday to Driedger, but she points out many people in the Northwest have only known the mountain as it is today, a beautiful place to recreate.

Although not as tall as Mount Rainier, it is larger in volume and the most massive composite cone in the Cascades. It last erupted over 1,000 years ago, and the current cone was built 40,000 to ...