Mount Semeru Erupts Again Tonight (Friday, March 7, 2025)

Mount Semeru in East Java erupted again on Friday, March 7, 2025, at 10:17 PM WIB. In the last week, Mount Semeru has erupted 84 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 with thick intensity towards the southwest. 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 from 00:00 to 23:59 WIB on March 7, 2025, showed 67 eruption quakes with amplitudes of 10-23 millimeters and durations of 50-291 seconds.

Furthermore, there were 12 puffing quakes with amplitudes of 2-8 millimeters and durations of 37-76 seconds, and 1 harmonic tremor with an amplitude of 3 millimeters and a duration of 177 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 margin) along Besuk Kobokan due to the potential for pyroclastic flow expansion and lahar flows up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 1,953 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 917 instances.