Warning! Mount Semeru Erupts Again This Morning (Thursday, April 4, 2024)

Mount Semeru in East Java erupted again on Thursday, April 4, 2024, at 7:14 AM WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 4 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column was observed to reach 500 meters above the peak, or 4,176 meters above sea level.

The ash column was observed to be gray with thick intensity towards the north and northwest. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 95 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level III (Alert). Observations of seismic activity from 00:00 to 06:00 WIB on April 4, 2024, showed 10 eruption quakes with amplitudes of 10-22 millimeters and durations of 74-142 seconds.

Furthermore, there were 2 ash emission quakes with amplitudes of 4-6 millimeters and durations of 47-60 seconds, and 1 distant tectonic earthquake with an amplitude of 3 millimeters, S-P 18 seconds, and a duration of 54 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, people should not engage in activities within 500 meters of the riverbank (river boundaries) along Besuk Kobokan due to the potential for pyroclastic flow and lahar flows extending up to 17 kilometers from the peak.

During 2024, MAGMA Indonesia has recorded 475 volcanic eruptions/eruptions throughout Indonesia. Mount Marapi in West Sumatra had the most eruptions (157 times), while Mount Semeru erupted 145 times.