Mount Semeru Erupts Monday Morning, Status Remains on Alert

Mount Semeru in East Java erupted again on Monday, January 6, 2025, at 08:53 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 10 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 to be approximately None meters above the peak (None meters above sea level).

The visual eruption was not observed. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 102 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 6, 2025, from 00:00 to 23:59 WIB showed 53 eruption quakes with amplitudes of 11-22 millimeters and durations of 60-216 seconds.

Furthermore, there was 1 rockfall earthquake with an amplitude of 10 mm and a duration of 95 seconds, and 13 emission quakes with amplitudes of 3-8 millimeters and durations of 43-76 seconds.

PVMBG advises against any activity in the southeast sector along Besuk Kobokan, up to 8 kilometers from the peak (eruption center). Outside this distance, the public should not conduct activities within 500 meters of the riverbank (river boundary) along Besuk Kobokan due to the potential for the expansion of pyroclastic flows and lahars up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 113 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions with 72 eruptions.