The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it ...

A stratovolcano in Europe erupted on June 2 and sent tourists running for safety. What is the status of Washington's most ...

The Three Sisters Volcano, located in the Pacific Northwest of the United States, is undergoing an intriguing geological ...

While there are no longer volcanoes in New England, evidence suggests there was volcanic activity hundreds of millions of ...

Sicily's Mount Etna put on a fiery show on Monday, sending a cloud of smoke and ash several kilometres into the air. Although ...

"It's been erupting almost continuously since late 2004," said Tom Pierson, a U.S. Geological Survey researcher at the Cascades Volcano Observatory in Vancouver. So it's a good bet it will also ...

scientist-in-charge at the Cascades Volcano Observatory. So the alert earlier this month by the USGS that there has been a flurry of earthquakes around Adams got some attention from volcano watchers.

From the Cascade volcanoes, basalt flows, to earthquakes, a groundbreaking new project looks back at Oregon’s geologic ...

One of the Pacific Ocean’s lesser-known volcanoes will blow its vent in the coming months, causing 10,000 earthquakes in one ...

The earthquakes were monitored by the USGS Cascades Volcano Observatory (CVO) and Pacific Northwest Seismic Network (PNSN) and ranged in magnitudes from 0.9 to 2.0. None of the earthquakes were ...