Reporter Constanza Montemayor explores the effects of melting glaciers at Mount Rainier National Park from the banks of the Ohanapecosh River. These glaciers feed major rivers and are crucial for ...

[It} actually has quite a few deep earthquakes that look like magma is either coming into the system or is cooling under there,” Thelen explained. “Now, go to Mount Rainier.

— A 3.7 magnitude earthquake was reported near the town of Greenwater, south of Snoqualmie Pass, on Sunday morning. The quake happened at around 8:15 a.m. and may have been felt from Mt. Rainier ...

"Mount Rainier may be one of the most iconic volcanoes in the U.S., but it's also considered the most dangerous. In this video, we dive into why Mount Rainier poses such a significant threat, from ...

Mount Saint Helens, Mount Adams, Mount Baker, and Glacier Peak are four of the active volcanoes in Washington state. The fifth, located less than 70 miles from Seattle, is Mount Rainier.

Mount Adams in Washington state is seismically calm. But a flurry of earthquakes around the volcano has garnered attention from observers wondering whether it will blow.

Mount Adams is the second-highest mountain in Washington state, after Mount Rainier. Known as an active stratovolcano, it's part of what scientists call the Cascade Volcanic Arc. The last time it ...

"Some volcanoes, like St. Helens, Rainier, and Mount Hood undergo episodes of increased earthquake frequency where we see bursts of many earthquakes, which may last for days to weeks," he said.

Six low-intensity earthquakes rumbled beneath Mount Adams during September, according to the U.S. Geological Survey Cascades Volcano Observatory. That’s an unusual amount of seismic activity at ...