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Widely shared social media posts claimed a massive underwater volcano "the size of a city" was "showing signs it could erupt ...
An earthquake 'swarm' comprised of hundreds of miniature earthquakes hit Mt. Rainier and the Cascade mountain in July.
The Sierra Nevada and Cascade Ranges form an axis of high mountains east of the Central Valley and Klamath Mountains. The Southern Cascade Range bioregion is the southern end of an extensive chain of ...
The most alarming case may be West Antarctica, where more than 100 active volcanoes lie buried beneath the ice. One glacier ...
The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009 ...
More than 300 tremors were recorded below Mount Rainier over the course of three days. Scientists say they were too weak for ...
There’s No Better Way to Appreciate Nature’s Awesome Power Than to Explore the Northwest’s Volcanoes
Magma from the mantle finds its way to the surface, where it erupts as lava or ash and gas—sometimes in spectacular spurts, ...
The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,410-foot volcano near ...
Geologists are continuing to monitor Mount Rainier in Washington state days after the first earthquake swarm in more than 15 ...
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