Mount Semeru Erupts Again This Morning (Tuesday, February 18, 2025)

Mount Semeru in East Java erupted again on Tuesday, February 18, 2025, at 10:22 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 43 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 eruption was not visually observed. The eruption was recorded on a seismograph with a maximum amplitude of 21 millimeters and a duration of 100 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on February 18, 2025, from 00:00 to 23:59 WIB, showed 72 eruption quakes with amplitudes of 10-23 millimeters and durations of 63-184 seconds.

Then, there were 10 puffing quakes with amplitudes of 3-8 millimeters and durations of 32-91 seconds, and 5 harmonic tremors with amplitudes of 2-8 millimeters and durations of 75-434 seconds.

The 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 engage in activities within 500 meters of the riverbank (river margin) 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 1,368 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has had the most eruptions, with 681.