More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano since 2009. As of Thursday, July 10, 334 earthquakes had been identified at ...

On July 8, Mount Rainier began to stir. Seismic activity occurs at all of the Pacific Northwest's Cascade Volcanoes to some extent, but this time was different. What began as a few faint tremors soon ...

Small earthquakes have rocked the active volcano Mt. Rainier in the Cascade Mountain Range this month, sending shockwaves around the 14,410-foot mountain. The United States Geological Survey reported ...

The Nisqually Glacier and the start of the Nisqually River are visible from a viewpoint along the Nisqually Vista Trail on Friday, June 6, 2025, at Mount Rainier National Park. The recent swarm of ...

Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday. A swarm of small earthquakes was detected under the mountain triggering ...

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 for ...

A Graham farm helped detect Mount Rainier's largest earthquake swarm. It hosts one of about 650 seismic stations operated by the Pacific Northwest Seismic Network. The PNSN relies on public and ...

“It’s now a larger swarm than anything we’ve seen since we’ve been (seismic) monitoring anything at Mount Rainier,” Alex Iezzi, a research geophysicist, said in an interview Thursday. Researchers ...

Outdoors at a Graham farm and enclosed within a small padlocked gate for protection from meddling cattle, an antenna mast roughly 12 feet tall stands behind a weathered equipment-cabinet and a silver ...