Mount Semeru Erupts Again This Morning (Friday, January 3, 2025)

Mount Semeru in East Java erupted again on Friday, January 3, 2025, at 7:03 AM WIB. In the last week, Mount Semeru has erupted 61 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the ash column height was observed to be approximately 700 meters above the peak (4,376 meters above sea level).

The ash column was observed to be white to gray with moderate intensity towards the north. 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). Seismic observations on January 3, 2025, from 00:00 to 23:59 WIB showed 32 eruption quakes with amplitudes of 13-22 millimeters and durations of 77-170 seconds.

Then, there were 3 rockfall quakes with amplitudes of 3-4 mm and durations of 37-75 seconds, and 3 emission quakes with amplitudes of 6-8 millimeters and durations of 41-66 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 (river buffer zone) 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 47 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions with 30 eruptions.