Mount Semeru Erupts Again This Morning (Sunday, February 2, 2025)

Mount Semeru in East Java erupted again on Sunday, February 2, 2025, at 5:15 AM WIB. In the last week, Mount Semeru has erupted 136 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 600 meters above the peak or 4,276 meters above sea level.

The ash column was observed to be white to gray with moderate intensity towards the northeast. 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 February 2, 2025, from 00:00 to 23:59 WIB showed 62 eruption quakes with amplitudes of 10-23 millimeters and durations of 60-177 seconds.

Then, there were 7 emission quakes with amplitudes of 4-8 millimeters and durations of 40-54 seconds, and 1 harmonic tremor with an amplitude of 10 millimeters and a duration of 142 seconds.

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 carry out activities within 500 meters of the riverbank (river buffer zone) along Besuk Kobokan due to the potential for the expansion of pyroclastic flows and lahars up to 17 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 983 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions with 490 eruptions.