Mount Semeru Erupts Again This Morning, Eruption Height 700 Meters Above the Peak

Mount Semeru in East Java erupted again on Thursday, April 24, 2025, at 06:03 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 37 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the ash column height was observed to be approximately 700 meters above the peak, or 4,376 meters above sea level.

The ash column was observed to be white to gray with thick intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 108 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on April 24, 2025, from 00:00 to 23:59 WIB, showed 38 eruption quakes with amplitudes of 10-22 millimeters and durations of 79-214 seconds.

Furthermore, there were 4 puffing quakes with amplitudes of 4-7 millimeters and durations of 34-86 seconds, and 3 distant tectonic quakes with amplitudes of 6-30 millimeters, S-P 12-18 seconds, and durations of 30-57 seconds.

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 the expansion of pyroclastic flows and lahars up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 3,162 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions, with 1,386.