Mount Lewotobi Laki-laki Erupts Again Early This Morning, Ash Column Height Around 1,000 Meters

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Tuesday (9/30/2025) at 02:14 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 10 times.

Citing eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached 1,000 meters above the peak (2,584 meters above sea level).

The ash column was observed to be gray 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 114 seconds.

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

According to MAGMA Indonesia's volcanic activity report, the activity level of Mount Lewotobi Laki-laki is at Level III (Alert). Seismicity observations on September 30, 2025, at 18:00-23:59 WITA showed 3 eruption earthquakes with amplitudes of 14.8-22.2 millimeters and earthquake durations of 62-134 seconds.

Subsequently, 4 exhalation earthquakes with amplitudes of 2.9-10.5 millimeters and earthquake durations of 32-42 seconds, and 6 non-harmonic tremors with amplitudes of 2.2-7.4 millimeters and earthquake durations of 72-184 seconds occurred.

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 6,453 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,532 times), while Mount Lewotobi Laki-laki erupted 653 times.

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