Mount Ili Lewotolok Erupts Again This Morning, Ash Column 400 Meters Above Peak

Mount Ili Lewotolok in East Nusa Tenggara erupted again on Thursday (October 16, 2025) at 05.57 WITA. In the last week, Mount Ili Lewotolok has erupted 2 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column was approximately 400 meters above the peak (1,823 meters above sea level).

The ash column was observed to be white to grey with moderate intensity towards the west. The eruption was recorded on a seismograph with a maximum amplitude of 3.8 millimeters and a duration of 36 seconds.

(Read: Indication of Forest and Land Fire Area in East Kalimantan until June 2025)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ili Lewotolok is at Level III (Alert). Seismic observations on October 16, 2025, at 00.00-06.00 WITA showed 7 eruption/explosion earthquakes with amplitudes of 3.8-7.2 millimeters and earthquake durations of 33-42 seconds.

Subsequently, there were 13 exhalation earthquakes with amplitudes of 2.2-3.6 millimeters and earthquake durations of 28-42 seconds, and 1 deep volcanic earthquake with an amplitude of 3.3 millimeters s-p 0.4 seconds and an earthquake duration of 12 seconds.

PVMBG urges the public around Mount Ili Lewotolok, as well as visitors/climbers/tourists, not to enter or conduct activities within a 3-kilometer radius from the center of Mount Ili Lewotolok's activity, and to be aware of the potential hazards from lava avalanches/landslides and pyroclastic clouds from the South and Southeast sectors, the West sector, and the Northeast sector of Mount Ili Lewotolok.

Throughout 2025, MAGMA Indonesia has recorded 6,671 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,623 times), while Mount Ili Lewotolok erupted 291 times.

(Read: NTT Always Struck by Forest and Land Fires in the Last 10 Years, BMKG Urges Increased Preparedness)