Warning! Mount Lewotobi Laki-laki Erupts Again This Afternoon (Tuesday, September 23, 2025)

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Tuesday (9/23/2025) at 15:59 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 38 times.

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 500 meters above the peak or 2,084 meters above sea level.

The ash column was observed to be gray with thick intensity to the west. The eruption was recorded on a seismograph with a maximum amplitude of 500 millimeters and a duration of 115 seconds.

(Read: 4.4 M Earthquake Shakes Babar, Indonesia)

According to MAGMA Indonesia''s volcano activity report, the activity level of Mount Lewotobi Laki-laki is at Level IV (Alert). Seismicity observations on September 23, 2025, at 06:00-12:00 WITA showed 3 eruption earthquakes with amplitudes of 7.4-22.2 millimeters and durations of 93-111 seconds.

Subsequently, there were 4 exhalation earthquakes with amplitudes of 2.9-7.4 millimeters and durations of 32-50 seconds, and 4 non-harmonic tremors with amplitudes of 2.9-4.4 millimeters and durations of 67-79 seconds.

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

Throughout 2025, MAGMA Indonesia has recorded 6,293 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,478 times), while Mount Lewotobi Laki-laki erupted 600 times.

(Read: Here Are the 10 Largest Earthquakes in History, Two of Them from Indonesia)