Of the five USGS volcano observatories, the Cascades Volcano Observatory is now the largest, with close to 80 permanent staff members focused on the Cascades and beyond. Many of them tasked with ...

Experts in volcanology observing the Pacific Northwest have raised fresh alerts regarding various volcanic systems within the ...

These fast-moving mudflows can devastate towns in a matter of minutes.

The previous chapters reviewed the hazards to property and life from Mount Rainier and outlined research needed to provide for better understanding of their nature and frequency of occurrence. This ...

Scientists have begun a long overdue study of Glacier Peak in Snohomish County – the second most explosive volcano in the Cascades after Mount St. Helens – in what they hope will lead to badly needed ...

As of January 4, 2021, Dr. Jon Major takes over leadership of the USGS Cascades Volcano Observatory from Seth Moran, who has served as the scientist-in-charge for the past five years. “It is my ...

At the risk of this blog becoming all volcanoes, all the time, I bring you... more volcanoes! Two of my favorite geobloggers wrote mustn't-miss posts on some of our Cascades volcanoes. They showcase ...

To the east of Mount Rainier are the remains of a once-mighty Cascade volcano. In the hills outside of Naches, Washington, at the foot of Mount Rainier are the remains of a much older volcano. Join ...

Social media videos are stoking fears about a catastrophic eruption in central Oregon, but the science tells a different story.

Mount Rainier (Figure 2.1) is one of about two dozen recently active volcanoes in the Cascade Range, a volcanic arc formed by subduction of the Juan de Fuca plate beneath the North American plate.