Mount Lewotobi Laki-laki Erupts Again This Afternoon (Saturday, October 4, 2025)

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Saturday (10/4/2025) at 13:13 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 35 times.

Citing 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 be around 1,000 meters above the peak or 2,584 meters above sea level.

The ash column was observed to be grey with thick intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 14.8 millimeters and a duration of 78 seconds.

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According to MAGMA Indonesia's volcanic activity report, the activity level of Mount Lewotobi Laki-laki is at Level III (Alert). Seismicity observations on October 4, 2025, from 06:00-12:00 WITA showed 4 non-harmonic tremors with amplitudes of 2.9-5.1 millimeters and earthquake durations of 74-85 seconds. Additionally, there were 2 distant tectonic earthquakes with amplitudes of 2.2-5.9 millimeters s-p 48.1 seconds and earthquake durations of 89-131 seconds.

PVMBG urges the public around Mount Lewotobi Laki-laki and visitors/tourists not to engage in any activities within a 6-kilometer radius from the center of the Mount Lewotobi Laki-laki eruption.

Throughout 2025, MAGMA Indonesia has recorded 6,530 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,555 times) while Mount Lewotobi Laki-laki erupted 678 times.

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