Semeru volcano — the highest volcano on Java — erupted on the afternoon of November 19, 2025, with pyroclastic flows racing at high speed down its slopes.

The volcano has spewed ash clouds as tall as 5.6km (3.48 miles) into the sky, authorities say.

SURABAYA, Indonesia: A volcano on Indonesia’s main island of Java erupted on Wednesday, throwing ash and gas kilometers into the sky and forcing officials to raise the alert…