Mount Rainier, which the U.S. Geological Survey considers the second most dangerous volcano in the Pacific Northwest (behind Mount St. Helens), shuddered with a swarm of small earthquakes that ...

Mount Rainier saw a swarm of hundreds of small earthquakes that started early Tuesday morning.

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

A swarm of more than 1,350 earthquakes shook Mount Rainier this summer. USGS scientists took a closer look. Here’s what they ...

USGS emphasized that Mount Rainier remains under close observation by a wide network of seismic, infrasound, GPS, and webcam stations.

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier but say there is no indication that the cluster of quakes is cause f… ...

Environment Mount Rainier earthquake swarms decline in activity even as strongest registered Friday Published: Jul. 12, 2025, 12:23 p.m.

There's a frozen labyrinth atop Mount Rainier. What secrets does it hold? Mountaineers, cavers, and scientists ventured into the inhospitable caves at the giant volcano’s peak to learn more ...

Mount Rainier saw a swarm of hundreds of small earthquakes that started early Tuesday morning.