Experts in volcanology observing the Pacific Northwest have raised fresh alerts regarding various volcanic systems within the Cascade Range that are exhibiting increased seismic and thermal activity.

The snow was softening in the early afternoon sun as school bus-sized blocks of ice loosened within the icefalls below us. My hand was cinched around the head of my ice axe as my two rope partners and ...

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 ...

Mount Rainier - one of many volcanoes found in the Cascade Range - is reflecting in the Reflection Lakes in Mount Rainier National Park in Washington State, USA. A seismic survey challenges the ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The Morning Glory pool in Yellowstone national park. Yellowstone is underlain by two magma bodies. Michael Juhran/dpa Unlike old ...

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.

Deadly motorcycle crash blocks I-5 southbound at Marquam Bridge in Portland A deadly motorcycle crash has Interstate 5 southbound closed just south of the Marquam Bridge Friday evening, Portland ...

USGS PHOTO BY M. ZOELLER Hawaiian Volcano Observatory geologists observed lava cascading over the rim of Napau Crater from a channel over 164-feet wide. Scientists said today that this week’s eruption ...

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 ...