Mount Lewotobi Laki-laki Erupts Again Tonight, Ash Column 1,200 Meters High from the Peak

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Friday (26/9/2025) at 10:30 PM WITA. In the last week, Mount Lewotobi Laki-laki has erupted 63 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height was approximately 1,200 meters above the peak (2,784 meters above sea level).

The ash column was observed to be gray with thick intensity towards the southwest and west. The eruption was recorded on a seismograph with a maximum amplitude of 29.6 millimeters and a duration of 77 seconds.

(Read: Indonesia Has the Most Active Volcanoes in the World)

According to MAGMA Indonesia's volcano activity report, the activity level of Mount Lewotobi Laki-laki is at Level IV (Alert). Seismic observations on September 26, 2025, from 12:00-18:00 WITA showed 6 eruption/explosion earthquakes with amplitudes of 11-22.2 millimeters and durations of 44-79 seconds.

Then, 1 exhalation earthquake with an amplitude of 2.9 millimeters and a duration of 42 seconds, and 4 non-harmonic tremors with amplitudes of 5.1-7.4 millimeters and durations of 104-243 seconds.

PVMBG urges the public around Mount Lewotobi Laki-laki and visitors/tourists not to conduct any activities within a 6-kilometer radius and a sectoral area of 7 kilometers to the Southwest-Northeast from the eruption center of Mount Lewotobi Laki-laki.

Throughout 2025, MAGMA Indonesia has recorded 6,367 volcanic eruptions/explosions across Indonesia. Mount Semeru in East Java erupted the most (2,502 times) while Mount Lewotobi Laki-laki erupted 625 times.

(Read: Countries with the Most Active Volcanoes in the World, Indonesia Ranks First)