Warning! Mount Semeru Erupts Again This Afternoon (Monday, March 9, 2026)

Mount Semeru in East Java erupted again on Monday (March 9, 2026) at 1:00 PM WIB. In the past week, Mount Semeru has erupted 8 times.

Based on 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 (None meters above sea level).

No eruption visuals were observed. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 122 seconds.

(Read: 5 Provinces with the Most Hotspots from Peatland Forest Fires in Ecosystems Until August 2025)

According to the MAGMA Indonesia volcanic activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on March 9, 2026 from 6:00 AM to 12:00 PM WIB showed 18 eruption/explosion earthquakes with amplitudes of 12-23 millimeters and durations of 69-130 seconds.

Then, 4 emission earthquakes with amplitudes of 5-8 millimeters and durations of 49-53 seconds, as well as 1 distant tectonic earthquake with an amplitude of 30 millimeters, s-p time of 13 seconds, and duration of 51 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, up to 13 kilometers from 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 expanding pyroclastic flows and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 919 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 471 events.

(Read: Indication of Forest Fire Area in West Kalimantan Province 2016-2025)