One of the most explosive volcanoes in U.S. history began its eruption with a trickle, not a blast. Mount St. Helens' gas-laden magma oozed into the cone before the mountain finally erupted in 1980.

Understanding what triggers large volcanic eruptions is crucial for hazard assessment, but the exact mechanism driving these ...

A remote volcano in Russia’s far east has roared back to life in spectacular fashion, unleashing two violent explosions within a single day and sending ash high into the atmosphere. The twin blasts, ...

Suggested Citation: "3 Forecasting Eruptions." National Academies of Sciences, Engineering, and Medicine. 2017. Volcanic Eruptions and Their Repose, Unrest ...

Although volcanic eruptions are spectacular natural events that occur around the world every day, most volcanoes spend the ...

Semeru volcano — the tallest volcano on Java at 3,676 meters — erupted on the afternoon of November 19, 2025, with pyroclastic flows racing at high speed more than 8.5 kilometers down its slopes, as ...

Hawaii's Kilauea volcano was erupting in its 43rd episode on Tuesday, prompting warnings from the U.S. Geological Survey and National Weather Service. A Volcanic Activity Notice issued by the USGS at ...