The Axial Seamount, located 300 miles off Oregon's coast, shows signs of eruption. Experts assure it won't affect land or ...

A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year -- nearly a mile deep and about 700 miles northwest of San Francisco, California, the Los ...

Nearly a mile deep, the Pacific Ocean volcano known as Axial Seamount is drawing increasing scrutiny from scientists who only discovered its existence in the 1980s.

OLYMPIA Wash. (KPTV) - Sunday marked 45 years since the eruption of Mount Saint Helens. It was a powerful force of nature, ...

According to the USGS, Mount St. Helens is the most active volcano in the lower 48 states and the most likely in the Cascades to erupt again.

Researchers found that a potential powerful earthquake combined with rising sea levels could lead to a mega tsunami.

MOUNT ST. HELENS, WA - OCTOBER 19: Cars travel away from the Coldwater Ridge visitors center on State Road 504 with Mt. St.

A volcano in the Pacific Northwest is showing signs of activity with an eruption imminent. The Axial Seamount is a mile-wide ...

On May 18, 1980, the United States experienced the deadliest and most destructive volcanic eruption in its history.

The May 18, 1980, eruption of Mount St. Helens in southern Washington claimed 57 lives and blasted the terrain of old-growth ...