Seismologists are closely monitoring Mount Rainier after a swarm of earthquakes struck the Pacific Northwest’s tallest ...

Hundreds of earthquakes have been rattling Mount Rainier over the last two days, marking the largest swarm since 2009.

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

Mount Kilauea erupted to life Wednesday as one of the world's most active volcanoes makes headlines once again.

Swarms — or clusters of earthquakes that occur in the same area in quick succession — are relatively common on Mount Rainier.

MT. RAINIER, Wash. — A swarm of small earthquakes was detected at Mount Rainier Tuesday morning, according to the U.S. Geological Survey Cascades Volcano Observatory (CVO) and the Pacific Northwest ...

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

On Tuesday, hundreds of earthquakes were detected, with depths ranging from 1.2 to 3.7 miles below the summit.

The quakes began just before 1:30 a.m. on Tuesday, according to the Geological Survey at the Cascade Volcano Observatory.

KOIN 6 Chief Meteorologist Josh Cozart takes a closer look at the earthquakes seen around Mount Rainier on Tuesday, July 8, 2025.