Warning! Mount Lewotobi Laki-laki Erupts Again Tonight (Sunday, September 21, 2025)

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Sunday (9/21/2025) at 00.41 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 29 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column was observed to be around 1,000 meters above the peak (2,584 meters above sea level).

The ash column was observed to be grey with moderate intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 7.4 millimeters and a duration of 71 seconds.

(Read: At Least 93 People Died Due to Natural Disasters Throughout January-March 2023)

According to the MAGMA Indonesia volcanic activity report, the activity level of Mount Lewotobi Laki-laki is at Level IV (Awas - Alert). Seismicity observations on September 21, 2025, at 18.00-23.59 WITA showed 3 eruption earthquakes with amplitudes of 4.4-7.4 millimeters and earthquake durations of 63-87 seconds.

Then, 1 rockfall earthquake with an amplitude of 4.4 mm and an earthquake duration of 50 seconds, and 2 exhalation earthquakes with amplitudes of 10.5-14.8 millimeters and earthquake durations of 41-44 seconds.

PVMBG urged the public around Mount Lewotobi Laki-laki and visitors/tourists not to carry out any activities within a radius of 6 kilometers and in the Southwest-Northeast sector up to 7 kilometers from the eruption center of Mount Lewotobi Laki-laki.

Throughout 2025, MAGMA Indonesia has recorded 6,189 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,464 times) while Mount Lewotobi Laki-laki erupted 528 times.

(Read: Extreme Weather to Floods, There Were 927 Natural Disaster Events in Indonesia Until Early May 2023)