Mount Semeru Erupts on Monday Afternoon, Status Remains on Alert

Mount Semeru in East Java erupted again on Monday, March 24, 2025, at 12:59 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 19 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 to reach None meters above the peak (None meters above sea level).

The visual eruption was not observed. The eruption was recorded on a seismograph with a maximum amplitude of 23 millimeters and a duration of 146 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Seismic observations on March 24, 2025, from 00:00 to 23:59 WIB, showed 54 eruption quakes with amplitudes of 10-23 millimeters and durations of 61-176 seconds.

Furthermore, there were 2 rockfall quakes with amplitudes of 4-6 mm and durations of 56-86 seconds, and 12 tremor quakes with amplitudes of 3-8 millimeters and durations of 34-82 seconds.

The PVMBG advises against any activity in the southeast 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 pyroclastic flow and lahar flows extending up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 2,386 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions, with 1,097.