Mount Semeru Erupts Again Tonight (Tuesday, February 4, 2025)

Mount Semeru in East Java erupted again on Tuesday, February 4, 2025, at 00:24 WIB. In the last week, Mount Semeru has erupted 24 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 reach 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 125 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 February 4, 2025, from 00:00 to 23:59 WIB showed 52 eruption quakes with amplitudes of 11-23 millimeters and durations of 57-210 seconds.

Then, there were 9 puffing quakes with amplitudes of 6-9 millimeters and durations of 31-78 seconds, and 2 harmonic quakes with amplitudes of 6-10 millimeters and durations of 114-139 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, people should not engage in activities within 500 meters of the riverbank (river boundaries) along Besuk Kobokan due to the potential for pyroclastic flow and lahar flows extending up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 1,020 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions with 510 eruptions.