Warning! Mount Semeru Erupts Again This Afternoon (Wednesday, March 25, 2026)

Mount Semeru in East Java erupted again on Wednesday (March 25, 2026) at 15:21 WIB. In the past week, Mount Semeru has erupted 11 times.

Quoting eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column observed is around None meters above the peak or None meters above sea level.

The eruption visual was not observed. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 132 seconds.

(Read: Jakarta Flood Points Distribution (January 23, 2026 at 07.00 WIB))

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on March 25, 2026 from 06:00-12:00 WIB showed 15 eruption/explosion earthquakes with an amplitude of 10-22 millimeters and a duration of 64-178 seconds. Then, 1 harmonic earthquake with an amplitude of 2 millimeters and a duration of 847 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, within 13 kilometers of the peak (eruption center). Outside this distance, residents are advised not to carry out activities within 500 meters of the riverbank along the Besuk Kobokan due to the potential for being affected by the expansion of hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 1,142 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 616 times.

(Read: Area of Rice Fields, Land, and Plantations in Indonesia Damaged by Floods 2020-2024)