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

Mount Rainier experienced a significant earthquake swarm, the largest since 2009, with hundreds of small quakes detected near ...

What if the most telling indications of an impending volcanic eruption are buried deep under the ocean, or in a fleeting succession of tiny quakes that no one perceives? As volcanoes of the Pacific ...

One of the most famous mountains in Washington, Mount Rainier, has been rumbling over the last day due to the amplified ...

Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

CALIPATRIA– A 4.3-magnitude earthquake struck near the Salton Sea early Friday morning, jolting residents and triggering a ...

The Pacific Northwest Seismic Network recorded hundreds of small earthquakes at Mt. Rainier on Tuesday morning. The US ...

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

A strange earthquake swarm lasted for years. Scientists finally know why. A new high-resolution view into Earth's crust shows what caused more than 22,000 tiny temblors to rumble in Southern ...

— -- Mount St. Helens erupted on May 18, 1980, after two months of increasing volcanic activity. Since its most recent eruption in 2008, there has been a swarm of earthquakes, which are ...

BOISE, Idaho — Idaho Central Mountains had numerous earthquakes occur Friday, all in connection to the ongoing earthquake swarm in the area. Several of Friday’s quakes registered above ...

More than 200 small earthquakes peppered California's Imperial Valley on Wednesday night and Thursday morning. The USGS reports that 240 small earthquakes occurred near Westmorland, California ...