Mount Semeru Erupts Again Tonight (Friday, January 16, 2026)

Mount Semeru in East Java erupted again on Friday (1/16/2026) at 00:07 WIB. In the last week, Mount Semeru has erupted 31 times.

According to 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 eruption's visual was not observed. Mount Semeru's eruption was still ongoing when this report was made.

(Read: 4.5 M Earthquake Shakes 14 Km North of San Carlos,)

According to MAGMA Indonesia's volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismicity observations on January 16, 2026, from 18:00-23:59 WIB showed 35 eruption earthquakes with amplitudes of 15-22 millimeters and durations of 55-150 seconds.

Additionally, there were 5 rockfall earthquakes with amplitudes of 2-6 mm and durations of 34-78 seconds, and 2 emission earthquakes with amplitudes of 3-6 millimeters and durations of 47-67 seconds.

PVMBG advises against any activities in the southeast sector along Besuk Kobokan, as far as 13 kilometers from the peak (eruption center). Beyond that distance, the public should not engage in activities within 500 meters of the river banks (river boundaries) along Besuk Kobokan, as there is potential for expansion of hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 213 volcano eruptions across Indonesia. Mount Semeru in East Java has erupted the most with 120 times.

(Read: 4.1 M Earthquake Shakes Phala Hawaii)