Mount Semeru Erupts Again This Evening (Wednesday, January 29, 2025)

Mount Semeru in East Java erupted again on Wednesday, January 29, 2025, at 3:29 PM WIB. In the last week, Mount Semeru has erupted 60 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 at approximately None meters above the peak (None meters above sea level).

The eruption was not visually observed. The eruption of Mount Semeru was still ongoing at the time of this report.

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 29, 2025, from 00:00 to 23:59 WIB, showed 55 eruption quakes with amplitudes of 13-23 millimeters and durations of 45-189 seconds.

Furthermore, there were 6 tremor quakes with amplitudes of 3-8 millimeters and durations of 53-74 seconds, and 1 deep volcanic earthquake with an amplitude of 11 millimeters, S-P 1.48 seconds, and a duration of 22 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, the public should not conduct 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 853 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions, with 414 eruptions.