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 ...

A volcano in Indonesia has erupted, spouting a 54,000ft ash cloud into the air as people run for their lives. Mount Semeru, located on the border of the Lumajang District and Malang District in East ...

There has been no change in the safe distance or sectoral recommendations for potential dangers related to Mount Merapi activities over the last three days.

A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ...

A man looks at a pyroclastic flow during the eruption of Mount Semeru in Lumajang, East Java, on November 19, 2025. (Photo credit: AGUS HARIANTO/AFP via Getty Images) Authorities raised the volcano's ...

We characterise the dynamics of the two major PDCs that occurred in 2022 by combining camera images and multiparameter geophysical measurements. First, we constrain the timing, velocity, and location ...