Of every volcano in the contiguous United States, the USGS says Mount St. Helens is the one most likely to erupt again, a ranking that has held since the mountain blew apart its own summit on May 18, ...

The Cascade volcanoes that dot the Pacific Northwest are not extinct. They are mostly dormant, meaning they could erupt sometime in the future. Scientists had long thought an indicator of an active ...

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The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range. From southern British Columbia ...

After Mount St. Helens erupted in 1980, experts were faced with a precarious question: How can we best prepare for when—not if—the next volcanic eruption in the Cascade Range occurs? Triggered by a ...

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.

Who will stop the Rain-ier? Scientists are warning that Washington’s Mount Rainier could unleash a catastrophic mudslide that has the potential to devastate three large towns within minutes. Often ...

Our western volcanoes : an overview -- Plates in motion : the ring of fire, hot spots, and supereruptions -- Magma and mountains : how volcanoes erupt and the landforms they build -- Glaciers on ...

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 ...

You know that very special rock you couldn’t resist picking up and taking home? The one with the uncanny shape, the surprising colors, the strange veins? On Saturday, you can take that rock to a ...