JAKARTA: Indonesia’s Mount Semeru, located along the border of Lumajang and Malang regencies in East Java, erupted early Wednesday (April 1), with authorities recording 16 eruptions in six hours while maintaining the volcano at an alert status. Mount Semeru Observation Post officer Mukdas Sofian said the eruptions were recorded between 12am and 6am local time, with durations of 92 to 164 seconds, and continued to show activity. Acting Geological Agency head Lana Saria said incandescent lava flows and rumbling sounds were observed, although lava movement, extending about 1.2km from the summit, has not shown significant escalation. "This morning, thick white smoke was observed at the right peak, while at the left peak, thin to thick white smoke was seen accompanied by moderate rumbling sounds,” she said, according to the news agency. She urged the public and tourists to remain vigilant and comply with the established safe radius recommendations, and to refrain from carrying out activities in residential areas that fall within zones prone to lava flows and hot clouds.

Source: The Star April 01, 2026 19:19 UTC