Mount Semeru Erupts Again This Evening (Thursday, January 9, 2025)

Mount Semeru in East Java erupted again on Thursday, January 9, 2025, at 4:34 PM WIB. In the last week, Mount Semeru has erupted 64 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 reach None meters above the peak or None meters above sea level.

The eruption was not visually observed. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 103 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on January 9, 2025, from 00:00 to 23:59 WIB showed 48 eruption quakes with amplitudes of 10-22 millimeters and durations of 58-160 seconds.

Then, there were 11 tremor quakes with amplitudes of 3-8 millimeters and durations of 22-76 seconds, and 13 harmonic tremors with amplitudes of 4-10 millimeters and durations of 39-584 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 engage in activities within 500 meters of the riverbank (riverbed) along Besuk Kobokan due to the potential for pyroclastic flow and lava flows extending up to 17 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 185 volcanic eruptions across Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 126 recorded events.