The United States Geological Survey (USGS) shows lava fountains shooting up high in the latest episode of an ongoing eruption ...

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

Mount Rainier was experiencing "the most significant seismic activity" at the volcano in more than 15 years as an "earthquake ...

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

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

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

Volcano watchers said Saturday the Mount Rainier earthquake swarm rates continued to decrease. The Cascades Volcano Observatory and Pacific Northwest Seismic Network recorded 464 events since the ...

Hundreds of earthquakes are detected at or near Mount Rainier each year, with "swarms" typically occurring once or twice ...

Hundreds of small earthquakes were detected at Mount Rainier on Tuesday in the largest such swarm at the active stratovolcano ...

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...

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

Earthquakes are common at Mount Rainier, happening about nine times every month, the agency said. Swarms of earthquakes ...