Mount Semeru Erupts Again This Morning (Sunday, January 12, 2025)

Mount Semeru in East Java erupted again on Sunday (12/1/2025) at 10:14 WIB. In the last week, Mount Semeru has erupted 101 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 at approximately None meters above the peak or None meters above sea level.

The visual eruption was not observed. The eruption was recorded on the seismograph with a maximum amplitude of 21 millimeters and a duration of 99 seconds.

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level II (Alert). Observations of seismic activity on January 12, 2025, from 00.00 to 23.59 WIB showed 62 eruption quakes with amplitudes of 10-22 millimeters and durations of 54-149 seconds.

Then, there were 5 puffing quakes with amplitudes of 3-7 millimeters and durations of 50-66 seconds, and 4 harmonic tremors with amplitudes of 2-9 millimeters and durations of 54-188 seconds.

PVMBG advises against any activity in the southeast sector along Besuk Kobokan, up to 13 kilometers from the peak (eruption center). Outside this distance, people should not carry out activities within 500 meters of the riverbank (river buffer zone) along Besuk Kobokan due to the potential for pyroclastic flow and lahar flows extending up to 17 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 256 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has had the most eruptions, with 163 eruptions.