Mount Semeru Erupts Again This Morning (Sunday, November 2, 2025)

Mount Semeru in East Java erupted again on Sunday (11/2/2025) at 06:27 AM Western Indonesian Time (WIB). In the last week, Mount Semeru has erupted 62 times.

Citing 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 700 meters above the peak (4,376 meters above sea level).

The ash column was observed to be white to grey with moderate intensity towards the south. Mount Semeru's eruption was still ongoing when this report was made.

(Read: Earthquakes to Droughts, These Are the Natural Disasters That Frequently Occurred in Indonesia Until Mid-2023)

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Seismicity observations on November 2, 2025, from 00:00-23:59 WIB showed 111 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and earthquake durations of 50-158 seconds.

Furthermore, 19 rockfall earthquakes with amplitudes of 2-6 mm and earthquake durations of 35-97 seconds, and 11 gas emission earthquakes with amplitudes of 2-9 millimeters and earthquake durations of 34-65 seconds occurred.

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

Throughout 2025, MAGMA Indonesia has recorded 6,877 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions, with 2,745 occurrences.

(Read: Floods and Extreme Weather, The Most Frequent Natural Disasters in Indonesia Until Early August 2023)