Essentially, gas pistoning is a shallow, degassing-driven rise and fall of a lava surface. Often these pistons occur in ...

Scientists worry that recent activity seen on a satellite at a volcano near a major U.S. city could spell disaster for thousands.

Beneath the cold waters of the northeast Pacific Ocean, roughly 700 miles northwest of San Francisco, an ominous geological force is rumbling. Scientists warn that the Axial Seamount, one of the most ...

These maps, created with data from NOAA’s National Centers for Environmental Information (NCEI), show the Juan de Fuca Ridge offshore of the Pacific Northwest of the United States. Maps assembled by J ...

Culture 65 years before St. Helens blew, another Cascade volcano shocked the Pacific Northwest By Kami Horton (OPB) May 22, 2025 6 a.m.

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

Sometime between today and 200 years from now, scientists say “the big one” will hit the United States. There is danger lurking on the sea floor off the Pacific Northwest’s coast: After ...

Huge underwater volcano situated off US coast could erupt 'any day now', scientists warn The Axial Seamount is the most active volcano in the Pacific Northwest and is reaching critical levels ...

The most active volcano in the Pacific Northwest could erupt 'any day now,' experts say. The last time it blew, it triggered 8,000 earthquakes, produced 400-foot-thick lava flows and sink the ...

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 ...

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.