Warning! Mount Semeru Erupts Again This Morning (Sunday, September 14, 2025)

Mount Semeru in East Java erupted again on Sunday (September 14, 2025) at 05:13 AM WIB. In the last week, Mount Semeru has erupted 37 times.

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

The observed ash column was white to gray with moderate intensity, heading north. The eruption of Mount Semeru was still ongoing when this report was made.

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According to MAGMA Indonesia''s volcanic activity report, Mount Semeru''s activity level is at Level II (Alert). Seismicity observations on September 14, 2025, from 00:00-23:59 WIB showed 44 eruption quakes with amplitudes of 13-22 millimeters and durations of 55-151 seconds.

Additionally, there were 4 exhalation quakes with amplitudes of 4-8 millimeters and durations of 33-61 seconds, and 2 harmonic tremors with amplitudes of 8 millimeters and durations of 96-170 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 conduct activities within 500 meters from the riverbanks (river boundaries) 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 6,088 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions, with 2,439 events.

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