Slow magma flows, small chambers, and hot rock all contribute to surprise volcano eruptions that occur without any prior warning.

An undersea volcano, located 470 km off the coast of Oregon, is set to erupt in 2025 after displaying tell-tale signs of activity, according to scientists.

The Axial Seamount is predicted to erupt in 2025, presenting a rare opportunity for scientists to test their models—tools that hold the potential to save lives.

The volcano, known as Axial Seamount, is more than 4,900 feet beneath the Pacific Ocean and 300 miles off the Oregon coast, but it is showing signs it will soon erupt for the first time since 2015.

Scientists can tell whether a volcano is about to erupt from the greenness of the trees around it, with more vibrant leaves indicating a potentially imminent blast. Until now, these subtle color ...

The volcano on the Big Island gave hints in the past month that an eruption might be imminent. By Remy Tumin Kilauea, the youngest and most active volcano on the Big Island of Hawaii, erupted ...

The Alaska Volcano Observatory said signs indicated a Mount Spurr eruption was likely, though not certain, in the weeks or months ahead.

Kilauea Volcano Erupts on Hawaii’s Big Island Scientists said that the main hazard from the eruption on Monday was increased levels of volcanic gas.

A new model explains why Alaska's Redoubt Volcano screams so loudly before erupting.