Mount Lewotobi Laki-laki Erupted on Wednesday Afternoon, Activity Level at Alert

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Wednesday (August 13, 2025) at 2:05 PM WITA. In the last week, Mount Lewotobi Laki-laki has erupted twice.

Citing eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column reached 200 meters above the peak or 1,784 meters above sea level.

The ash column was observed to be white, gray to brown with thin to moderate intensity towards the southwest and west. The eruption was recorded on a seismograph with a maximum amplitude of 44.4 millimeters and a duration of 42 seconds.

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According to MAGMA Indonesia''s volcano activity report, Mount Lewotobi Laki-laki''s activity level is at Level III (Alert). Seismicity observations on August 13, 2025, from 06:00-12:00 WITA showed 3 non-harmonic tremors with amplitudes of 4.4-6.6 millimeters and earthquake durations of 72-120 seconds. Additionally, there was 1 deep volcanic earthquake with an amplitude of 2.9 millimeters s-p 1 second and an earthquake duration of 10 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 Mount Lewotobi Laki-laki''s eruption.

Throughout 2025, MAGMA Indonesia has recorded 5,597 volcano eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,240 times), while Mount Lewotobi Laki-laki erupted 454 times.

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