Warning! This Morning Mount Ili Lewotolok Erupts Again (Tuesday, September 16, 2025)

Mount Ili Lewotolok in East Nusa Tenggara erupted again on Tuesday (16/9/2025) at 05.31 WITA. In the last week, Mount Ili Lewotolok has erupted 4 times.

Based on 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 500 meters above the peak (1,923 meters above sea level).

The ash column was observed to be white to gray with moderate intensity towards the west. The eruption was recorded on a seismograph with a maximum amplitude of 24.4 millimeters and a duration of 62 seconds.

(Read: Forest and Land Fire Hotspots in South Sumatra Increased in Mid-October 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 16, 2025, at 00.00-06.00 WITA showed 53 eruption/explosive earthquakes with amplitudes of 8.3-24.4 millimeters and earthquake durations of 29-67 seconds.

Then, 63 exhalation earthquakes with amplitudes of 1.7-7.9 millimeters and earthquake durations of 26-60 seconds, as well as 5 deep volcanic earthquakes with amplitudes of 1.6-25.1 millimeters, S-P 0.7-1 seconds, and earthquake durations of 10-16 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 falling/landsliding lava and hot clouds from the South and Southeast sectors, the West sector, and the Northeast sector of Mount Ili Lewotolok.

Throughout 2025, MAGMA Indonesia has recorded 6,118 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,452 times), while Mount Ili Lewotolok erupted 272 times.

(Read: BNPB Recorded 52 Natural Disasters in Mid-August 2023, Mostly Forest and Land Fires)