Warning! Mount Semeru Erupts Again This Afternoon (Sunday, August 24, 2025)

Mount Semeru in East Java erupted again on Sunday (8/24/2025) at 14:16 WIB. In the last week, Mount Semeru has erupted 33 times.

Reporting 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 eruption visuals were not observed. The eruption was recorded on a seismograph with a maximum amplitude of 21 millimeters and a duration of 110 seconds.

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According to the MAGMA Indonesia volcano activity report, Mount Semeru''s activity level is at Level II (Alert). Seismicity observations on August 24, 2025, from 00:00-23:59 WIB showed 42 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and earthquake durations of 49-189 seconds.

Furthermore, there was 1 rockfall earthquake with an amplitude of 6 mm and a duration of 75 seconds, and 19 emission earthquakes with amplitudes of 3-8 millimeters and durations of 37-100 seconds.

PVMBG advises against any activities in the southeast sector along Besuk Kobokan, as far as 8 kilometers from the peak (eruption center). Beyond that distance, people should not engage in activities within 500 meters from the river bank (river border) along Besuk Kobokan, as there is a potential for expansion of hot clouds and lava flows up to 13 kilometers from the peak.

Throughout 2025, MAGMA Indonesia has recorded 5,775 volcano eruptions across Indonesia. Mount Semeru in East Java has erupted the most with 2,308 times.

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