Mount Semeru Erupts Again This Morning (Monday, March 17, 2025)

Mount Semeru in East Java erupted again on Monday, March 17, 2025, at 6:17 AM WIB. In the last week, Mount Semeru has erupted 18 times.

According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the ash column height was observed at approximately 800 meters above the peak or 4,476 meters above sea level.

The ash column was observed to be gray with thick intensity towards the southeast and south. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 135 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on March 17, 2025, from 00:00 to 23:59 WIB, showed 52 eruption quakes with amplitudes of 10-22 millimeters and durations of 51-190 seconds.

Furthermore, there were 3 rockfall quakes with amplitudes of 2-3 mm and durations of 41-54 seconds, and 19 emission quakes with amplitudes of 3-8 millimeters and durations of 38-88 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 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 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 2,243 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 1,028 occurrences.