Mount Lewotobi Laki-laki Erupts Again This Morning, Ash Reaches 800 Meters Above the Summit

Mount Lewotobi Laki-laki in East Nusa Tenggara erupted again on Monday, April 21, 2025, at 7:08 a.m. WITA. In the last week, Mount Lewotobi Laki-laki has erupted 17 times.

According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 800 meters above the peak (2,384 meters above sea level).

The ash column was observed to be gray with thick intensity towards the north and northeast. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 109 seconds.

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Lewotobi Laki-laki is at Level III (Alert). Observations of seismic activity on April 21, 2025, from 00:00 to 06:00 WITA showed 12 eruption quakes with amplitudes of 11-44 millimeters and durations of 93-161 seconds.

Furthermore, there were 4 tremor quakes with amplitudes of 2.9-5.9 millimeters and durations of 35-51 seconds, and 1 distant tectonic earthquake with an amplitude of 11 millimeters, an S-P time of 53 seconds, and a duration of 263 seconds.

PVMBG advises the public around Mount Lewotobi Laki-laki and visitors/tourists not to conduct any activities within a 6-kilometer radius of the eruption center of Mount Lewotobi Laki-laki.

During 2025, MAGMA Indonesia has recorded 3,073 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions (1,363 eruptions), while Mount Lewotobi Laki-laki erupted 348 times.