Mount Semeru Erupts Again Early This Morning (Saturday, November 1, 2025)

Mount Semeru in East Java erupted again on Saturday (1/11/2025) at 02:03 AM WIB. In the last week, Mount Semeru has erupted 50 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 be around None meters above the peak or None meters above sea level.

The visual eruption was not observed. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 125 seconds.

(Read: Due to Forest Fires, Acute Respiratory Infections in South Kalimantan Reached 189 Thousand Cases by September 2023)

According to MAGMA Indonesia's volcano activity report, Mount Semeru's activity level is at Level II (Alert). Seismic observations on November 1, 2025, at 00:00-23:59 WIB showed 127 eruption earthquakes with amplitudes of 10-23 millimeters and earthquake durations of 59-158 seconds.

Subsequently, there were 43 rockfall earthquakes with amplitudes of 1-9 mm and durations of 33-122 seconds, as well as 24 emission earthquakes with amplitudes of 2-8 millimeters and durations of 21-76 seconds.

PVMBG advises against any activities in the southeast sector along Besuk Kobokan, as far as 8 kilometers from the peak (eruption center). Beyond this distance, the public is advised not to conduct activities within 500 meters from the riverbanks along Besuk Kobokan due to the potential for expansion of hot clouds and lava flows up to 13 kilometers from the peak.

Throughout 2025, MAGMA Indonesia has recorded 6,862 volcanic eruptions across Indonesia. Mount Semeru in East Java has erupted the most with 2,733 times.

(Read: BNPB Records 52 Natural Disasters in Mid-August 2023, Mostly Forest Fires)