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

Mount Semeru in East Java erupted again on Thursday, April 4, 2024, at 08:31 WIB (Western Indonesian Time). In the last week, Mount Semeru has erupted 5 times.

According to 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 700 meters above the peak, or 4,376 meters above sea level.

The ash column was observed to be white to gray in color 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 98 seconds.

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

Furthermore, there were 2 puffing quakes with amplitudes of 4-6 millimeters and durations of 47-60 seconds, and 1 distant tectonic quake with an amplitude of 3 millimeters, an S-P interval of 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 buffer zone) along Besuk Kobokan due to the potential for pyroclastic flow and lava flows extending up to 17 kilometers from the peak.

During 2024, MAGMA Indonesia has recorded 476 volcanic eruptions/eruptions throughout Indonesia. Mount Marapi in West Sumatra had the most eruptions (157 times), while Mount Semeru erupted 146 times.