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

Experts believe a Mount Rainier eruption would post a grave threat to millions who live in the southern and eastern sections of the Seattle metropolitan area.

Mitch Sutton has always been into airplanes, but things really took off five years ago when he bought a house in Burien, Wash., with a great view of Seattle-Tacoma International Airport and Mount ...

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

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 ...

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

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

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