Portland, Oregon, is known for its bridges, rain, and progressive urban planning, but did you know that some of its most ...

Small earthquakes have rocked the active volcano Mt. Rainier in the Cascade Mountain Range this month, sending shockwaves ...

Ralph Sawyer went missing Friday during a solo biking trip near Trillium Lake, prompting a widespread search-and-rescue effort.

As of July 10, 334 earthquakes had been identified over the course of two days at Washington's Mount Rainier.

As of July 10, 334 earthquakes had been identified over the course of two days at Washington's Mount Rainier.

Over 200 earthquakes have been detected around Mount Rainier, Washington, raising eyebrows during the biggest swarm of tremors in nearly two decades.

The Pacific Northwest Seismic Network recorded hundreds of small earthquakes at Mt. Rainier on Tuesday morning. The US Geological Survey (USGS) says this is the largest earthquake swarm at the ...

The hundreds of Mount Rainier earthquakes detected Tuesday marked the largest seismic swarm at the active stratovolcano since 2009, the USGS said.

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 ...