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

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 ...

May 18th marks the 45th anniversary of the eruption of Mt. St. Helens and the creation of the USGS Cascades Volcano Observatory. This Saturday they are holding an open house to teach people about ...

scientist-in-charge at the U.S. Geological Survey’s Cascades Volcano Observatory in Vancouver, Washington. Solving this puzzle is about more than satisfying geologic curiosity. The firestorm 40 ...

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 ...

Lava fountains reached heights of more than 330 feet and feeding multiple lava streams. Scientists with the U.S. Geological Survey's Hawaiian Volcano Observatory said the fountains were likely to go ...

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 ...

Here’s hoping it’s nothing to blow your lid over. A normally quiet “high threat” volcano in Washington state has been rumbling at a record rate — prompting an alert from geologists who ...

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 ...