Mount Lewotobi Laki-laki Erupts Again This Morning (Monday, September 22, 2025)

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Monday (9/22/2025) at 07:55 WITA. In the last week, Mount Lewotobi Laki-laki has erupted 13 times.

Citing 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 1,500 meters above the peak or 3,084 meters above sea level.

The ash column was observed to be gray with thick intensity to the southwest and west. The eruption was recorded on a seismograph with a maximum amplitude of 7.4 millimeters and a duration of 86 seconds.

(Read: 4.16 M Earthquake Shakes Mona Passage)

According to MAGMA Indonesia''s volcano activity report, the activity level of Mount Lewotobi Laki-laki is at Level IV (Awas/Alert). Seismicity observations on September 22, 2025, from 00:00-06:00 WITA, showed 8 eruption tremors with amplitudes of 10.5-29.6 millimeters and tremor durations of 50-171 seconds.

Subsequently, 1 rockfall tremor with an amplitude of 5.9 mm and a duration of 98 seconds, and 5 exhalation tremors with amplitudes of 5.9-26.9 millimeters and durations of 32-55 seconds occurred.

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 7-kilometer sectoral distance from the Southwest-Northeast of the Mount Lewotobi Laki-laki eruption center.

Throughout 2025, MAGMA Indonesia has recorded 6,254 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,471 times) while Mount Lewotobi Laki-laki erupted 575 times.

(Read: 4.5 M Earthquake Shakes 14 Km North of San Carlos,)