The most destructive volcanic eruption in United States history happened less than half a century ago in Washington state. On May 18, 1980, the north side of Mount St. Helens, in southwestern ...

If you’ve never heard of the Axial Seamount, you’d be forgiven. But the underwater volcano has made national news recently after research suggested it is likely nearing its first eruption in 10 years.

MOUNT ADAMS, Wash. (KPTV/Gray News) – Scientists are installing new monitoring equipment around Mount Adams amid a spike in seismic activity under the volcano. Mount Adams, located in Washington state ...

Mount Rainier’s quiet, snowcapped profile hides a restless interior that has just rattled itself with more than a thousand tiny earthquakes, a reminder that one of the country’s most dangerous ...