Mount Semeru Erupts Again This Afternoon (Monday, March 31, 2025)

Mount Semeru in East Java erupted again on Monday, March 31, 2025, at 11:32 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 23 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 was observed at approximately None meters above the peak (None meters above sea level).

The eruption was not visually observed. The eruption of Mount Semeru is still ongoing at the time of this report.

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level II (Alert). Observations of seismic activity on March 31, 2025, from 00:00 to 23:59 WIB, showed 54 eruption quakes with amplitudes of 10-23 millimeters and durations of 70-225 seconds.

Furthermore, there was 1 single rockfall event with an amplitude of 8 mm and a duration of 110 seconds, and 14 emission quakes with amplitudes of 3-8 millimeters and durations of 43-96 seconds.

The PVMBG advises against any activity in the southeastern sector along Besuk Kobokan, up to 8 kilometers from the peak (eruption center). Outside this distance, the public should not engage in activities within 500 meters of the riverbank (river buffer zone) along Besuk Kobokan due to the potential for the expansion of pyroclastic flows and lava flows up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 2,529 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 1,175 events.