Warning! Mount Lewotobi Laki-laki Erupts Again Tonight (Saturday, 27 September 2025)

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Saturday (27/9/2025) at 23:42 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 76 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 (2,084 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 29.6 millimeters and a duration of 98 seconds.

(Read: East Nusa Tenggara Always Hit by Forest and Land Fires in the Last 10 Years, BMKG Urges Increased Preparedness)

According to MAGMA Indonesia's volcanic activity report, the activity level of Mount Lewotobi Laki-laki is at Level IV (Alert). Seismicity observations on September 27, 2025, at 18:00-23:59 WITA showed 3 eruption/explosion earthquakes with amplitudes of 4.4-29.6 millimeters and durations of 87-109 seconds.

Followed by 3 exhalation earthquakes with amplitudes of 2.2-4.4 millimeters and durations of 33-46 seconds, and 1 non-harmonic tremor with an amplitude of 5.9 millimeters and a duration of 127 seconds.

PVMBG urges the public around Mount Lewotobi Laki-laki and visitors/tourists not to carry out any activities within a 6-kilometer radius and a sectoral area of 7 kilometers from the southwest to the northeast from the center of Mount Lewotobi Laki-laki's eruption.

Throughout 2025, MAGMA Indonesia has recorded 6,404 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,515 times), while Mount Lewotobi Laki-laki erupted 638 times.

(Read: There are Still 381 High-Risk Forest and Land Fire Hotspots in Indonesia in Early 2023)