The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only ...

Crater Lake is among the numerous smaller volcanoes and volcanic features outside of the 13 major volcanoes that form the ...

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.

Mount Lassen, in the southern Cascades, erupted on May 22, 1915, 65 years almost to the day before Mount St. Helens. Also known as Lassen Peak, the mountain is the southernmost active volcano in ...

"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 ...

The Cascade Volcanic Arc stretches from Northern California to southern British Columbia and contains more than a dozen volcanoes. The U.S. Geological Survey classifies 11 of them, including Mount ...

The U.S. Geological Survey’s Cascades Volcano Observatory in Vancouver will host an open house 10 a.m. to 4 p.m. Saturday. Admission is free. Volcano scientists will be on hand to describe their ...

While there are no longer volcanoes in New England, evidence suggests there was volcanic activity hundreds of millions of years ago. Parts of the White Mountains in New Hampshire were formed by a ...

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 ...