Warning! Mount Semeru Erupts Again Early This Morning (Thursday, April 24, 2025)

Mount Semeru in East Java erupted again on Thursday, April 24, 2025, at 01:32 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 36 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 reach 600 meters above the peak (4,276 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 123 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Seismic observations 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, people 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 lava flows extending up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 3,160 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 1,385 eruptions.