Warning! Mount Ili Lewotolok Erupts Again This Morning (Saturday, September 13, 2025)

Mount Ili Lewotolok in East Nusa Tenggara erupted again on Saturday (13/9/2025) at 06.04 WITA. In the last week, Mount Ili Lewotolok has erupted 9 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 500 meters above the peak (1,923 meters above sea level).

The ash column was observed to be white to grey with thick intensity towards the west. The eruption was recorded on a seismograph with a maximum amplitude of 15.9 millimeters and a duration of 26 seconds.

(Read: Earthquakes to Droughts, These Are the Natural Disasters That Frequently Occur in Indonesia Until Mid-2023)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ili Lewotolok is at Level III (Alert). Seismic observations on September 13, 2025, at 00.00-06.00 WITA showed 45 eruption/explosion earthquakes with amplitudes of 4-26.9 millimeters and earthquake durations of 25-37 seconds.

Then, 1 rockfall earthquake with an amplitude of 1.7 mm and a duration of 31 seconds, and 25 shallow gas emission earthquakes with amplitudes of 1.6-4.1 millimeters and durations of 27-53 seconds.

PVMBG urges the public around Mount Ili Lewotolok, as well as visitors/climbers/tourists, not to enter and not to engage in 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 falls/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 6,072 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,435 times), while Mount Ili Lewotolok erupted 266 times.

(Read: These are the 10 Largest Earthquakes in History, Two of Them From Indonesia)