Mount Semeru Erupts Again Tonight (Sunday, March 30, 2025)

Mount Semeru in East Java erupted again on Sunday, March 30, 2025, at 10:12 PM WIB. In the last week, Mount Semeru has erupted 85 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 400 meters above the peak (4,076 meters above sea level).

The ash column was observed to be white to gray with moderate intensity towards the north. The eruption of Mount Semeru was still ongoing at the time of this report.

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level II (Alert). Seismic observations on March 30, 2025, from 00:00 to 23:59 WIB showed 52 eruption quakes with amplitudes of 10-23 millimeters and durations of 71-247 seconds.

Furthermore, there were 15 tremors with amplitudes of 3-9 millimeters and durations of 37-126 seconds, and 1 harmonic tremor with an amplitude of 7 millimeters and a duration of 193 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 conduct activities within 500 meters of the riverbank (river buffer zone) along Besuk Kobokan due to the potential for the expansion of pyroclastic flows and lava flows up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 2,514 volcanic eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions with 1,163.