This underwater volcano off Oregon coast delays eruption until 2026

Axial Seamount is an underwater volcano (Image: NOAA)

An underwater volcano off Oregon’s coast is not erupting soon. The experts now expect it to erupt in mid to late 2026. The volcano is known as Axial Seamount, it lies deep beneath the Pacific Ocean. This volcano is situated on the Juan de Fuca Ridge, west of Oregon.

What did researchers find?

Researchers have tracked the volcano’s uplift and seismic movements carefully. They noticed the seafloor inflation rate has slowed since early 2024. By late 2024, the volcano reached 95 percent of its 2015 level. The scientists say it may take another year or more to erupt.

Who Made the Discovery?

A research team from Oregon State University monitors the seamount. They use deep-sea instruments to measure magma movement and crust uplift. Their goal is to understand how undersea volcanoes behave over time. This helps predict future eruptions with greater accuracy and safety.

One of the most studied Seamounts

Axial Seamount sits about 480 kilometres off Oregon’s coast. It last erupted in 2015, following earlier events in 1998 and 2011. Each eruption reshaped the seafloor and released hot lava flows. The area remains one of the most studied seamount volcanoes globally.

When and Why the Forecast Changed? 

Earlier predictions pointed to an eruption by early or mid-2025. New readings from seafloor sensors showed weaker ground inflation activity. Hence, experts revised the likely eruption window to mid-2026 onward. This forecast comes from years of data and model comparisons.

What Scientists Plan Ahead?

The researchers warn eruption forecasts remain uncertain despite advanced data tools. The volcano’s inflation may rise faster or slower than expected. Continuous monitoring will guide scientists on the next eruption’s timing. For now, the ocean floor remains calm but under close watch.