Mount Semeru Erupts Again This Morning (Thursday, February 6, 2025)

Mount Semeru in East Java erupted again on Thursday, February 6, 2025, at 7:26 AM WIB. In the last week, Mount Semeru has erupted 58 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, or 4,076 meters above sea level.

The ash column was observed to be white to gray with thick intensity towards the west. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 105 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity from February 6, 2025, 00:00-23:59 WIB, showed 56 eruption quakes with amplitudes of 11-23 millimeters and durations of 60-160 seconds.

Furthermore, there were 3 puffing quakes with amplitudes of 5-8 millimeters and durations of 40-57 seconds, and 1 harmonic tremor with an amplitude of 2 millimeters and a duration of 575 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 conduct activities within 500 meters of the riverbank (river edge) along Besuk Kobokan due to the potential for the expansion of pyroclastic flows and lava flows up to 17 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 1,062 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions, with 544 eruptions.