Warning! Mount Semeru Erupts Again Early This Morning (Saturday, March 8, 2025)

Mount Semeru in East Java erupted again on Saturday, March 8, 2025, at 04:56 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 89 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 500 meters above the peak, or 4,176 meters above sea level.

The ash column was observed to be white to gray in color with thick intensity towards the south. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 100 seconds.

According to the MAGMA Indonesia volcanic activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on March 8, 2025, from 00:00 to 23:59 WIB, showed 53 eruption quakes with amplitudes of 11-23 millimeters and durations of 61-165 seconds.

Furthermore, there were 8 puffing quakes with amplitudes of 3-8 millimeters and durations of 42-84 seconds, and 7 distant tectonic quakes with amplitudes of 4-25 millimeters (s-p 12-56 seconds) and durations of 38-105 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 lahar flows extending up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 1,960 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 922 recorded events.