Mount Lewotobi Laki-laki Erupts Again This Afternoon, Ash Plume 5,000 Meters Above Peak

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Wednesday (October 1, 2025) at 2:30 PM WITA. In the last week, Mount Lewotobi Laki-laki has erupted 22 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the ash column was observed to be approximately 5,000 meters above the peak (6,584 meters above sea level).

The ash column was observed to be gray with thick intensity towards the west and northwest. The eruption of Mount Lewotobi Laki-laki was still ongoing when this report was made.

(Read: Volcanic Eruption Trends in Recent Years)

According to the MAGMA Indonesia volcanic activity report, the activity level of Mount Lewotobi Laki-laki is at Level III (Alert). Seismicity observations on October 1, 2025, from 06:00-12:00 WITA showed 4 non-harmonic tremors with amplitudes of 2.9-7.4 millimeters and earthquake durations of 64-80 seconds. Additionally, there was 1 distant tectonic earthquake with an amplitude of 10.5 millimeters s-p 54.1 seconds and an earthquake duration of 172 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 6,483 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,540 times) while Mount Lewotobi Laki-laki erupted 665 times.

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