The U.S. Geological Survey Cascades Volcano Observatory posts a weekly volcanic activity update in the Pacific Northwest. The big five volcanoes in Washington are detailed, as well as Mount Hood ...

65 years before St. Helens blew, another Cascade volcano shocked the Pacific Northwest. By Kami Horton (OPB) May 22, 2025 1 p.m. ... This map, provided by the National Park Service, ...

Back in 2005, the U.S. Geological Survey set out to determine just that, assigning a “threat level” to all 169 potentially active volcanoes in the United States.

SEATTLE — The Pacific Northwest's most active underwater volcano is showing signs of an impending eruption, potentially occurring before the end of 2025, according to researchers at the ...

The most active volcano in the Pacific Northwest is the Axial Seamount. It’s located 300 miles west of Astoria, Oregon, and a mile under the ocean. It’s erupted three times in the past 25 years.

SEATTLE — An underwater volcano in the Pacific Northwest shows signs it may erupt for the first time in years. "It's one of the coolest things that happens on our planet," said Debbie Kelley ...

A volcano in the Pacific Northwest is showing signs of activity with an eruption imminent. The Axial Seamount is a mile-wide underwater volcano that sits 300 miles off the coast of Oregon and more ...

An undersea volcano off Oregon’s coast will likely erupt in 2025, scientists say. Known as Axial Seamount, it’s the most active volcano in the Pacific Northwest — though one most people ...

PORTLAND, Ore. (KOIN) – One of the most active volcanoes in the Pacific Northwest is waking up — leading some scientists to believe it will erupt in 2025. The volcano, named Axial Seamount ...

Don’t be too hard on yourself if you’ve never heard of the Northwest’s most active volcano. It has no national park or ski area named after it. Its heights grace no city’s skyline. The ...