Scientists have recorded the "largest" earthquake swarm at Mount Rainier in Washington state since 2009, the U.S. Geological Survey reported. The swarm at the second-most seismically active volcano in ...

November 2024, headlines across Washington state warned of 72 hours of near-continuous volcanic tremor at Mount Rainier, with ...

Over 300 minor earthquakes have been detected under the surface of Mount Rainier since the morning of Tuesday, July 8. The swarm is the first of its kind since 2009, and, according to Pacific ...

Researchers detected the largest Mount Rainier earthquake swarm on record. Over 400 small quakes have been located as of Friday and many more have been detected. The temblors have shown no evidence ...

Earlier this month, Mount Rainier experienced its most powerful seismic swarm ever recorded by the U.S. Geological Survey. More than 1,000 earthquakes have been detected at the mountain since July 8 — ...

The Nisqually Glacier and the start of the Nisqually River are visible from a viewpoint along the Nisqually Vista Trail on Friday, June 6, 2025, at Mount Rainier National Park. The recent swarm of ...