Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

Seismometers at Mount Rainier recorded a 72-hour burst of underground vibrations starting November 15, 2025, around 5 a.m. ET ...

SPOKANE, Wash. – Experts are worried about the tallest mountain in the Cascade Range, according to National Geographic magazine. The article titled “This May be the Most Dangerous U.S. Volcano,” ...

Mount Rainier’s seismic sensors showed unusual activity for several days, prompting widespread attention online, but experts told KIRO 7 News the readings came from a malfunctioning instrument rather ...

Washington state may not have to worry about hurricanes, but it is volcano country. The United States has 161 active volcanoes – all in the western U.S. – but only 18 are classified as a "very high ...

Mount Rainier is not getting ready to erupt, but scientists at the Pacific Northwest Seismic Network might blow their stacks over having to respond to a rumor about increased tremor activity at the ...

No, there was no “eruption threat” or sudden seismic tremor activity at Mount Rainier. But there is an eruption of backlash for an article that stoked fears with some faulty reporting. If you were ...

A new seismic station was installed in August 2025 on Burley Mountain, near Mount Rainier. After a swarm of earthquakes ...

View of Mount Rainier from Pinnacle Peak trail in Mount Rainier National Park, Washington State, USA. (Photo by Wolfgang Kaehler/LightRocket via Getty Images) USGS Volcanoes, a USGS social media ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...