Mount Semeru Erupts Again Tonight, Ash Reaches Approximately 500 Meters High

Mount Semeru in East Java erupted again on Tuesday, October 1, 2024, at 11:42 PM WIB. In the last week, Mount Semeru has erupted 13 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 reach 500 meters above the peak (4,176 meters above sea level).

The ash column was observed to be white to gray with moderate intensity towards the north. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 148 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on October 1, 2024, from 00:00 to 23:59 WIB showed 54 eruption quakes with amplitudes of 10-23 millimeters and durations of 60-163 seconds.

Furthermore, there were 8 rockfall quakes with amplitudes of 2-10 mm and durations of 50-134 seconds, and 13 emission quakes with amplitudes of 2-8 millimeters and durations of 28-72 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 edge) along Besuk Kobokan due to the potential for pyroclastic flow and lahar flows extending up to 13 kilometers from the peak.

During 2024, MAGMA Indonesia has recorded 4,255 volcanic eruptions/eruptions throughout Indonesia. Mount Ibu in North Maluku had the most eruptions (1,790 eruptions), while Mount Semeru erupted 1,386 times.