Mount Ili Lewotolok Erupts Again Tonight, Ash Column Height Around 300 Meters

Mount Ili Lewotolok in East Nusa Tenggara erupted again on Saturday (8/9/2025) at 11:16 PM WITA. In the last week, Mount Ili Lewotolok has erupted 18 times.

Citing 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 300 meters above the peak or 1,723 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 31.1 millimeters and a duration of 38 seconds.

(Read: Indonesia Has the Most Active Volcanoes in the World)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ili Lewotolok is at Level III (Alert). Seismicity observations on August 9, 2025, from 6:00 PM to 11:59 PM WITA showed 52 eruption earthquakes with amplitudes of 5.8-35.8 millimeters and durations of 38-43 seconds.

Furthermore, 29 exhalation earthquakes with amplitudes of 1.6-7.8 millimeters and durations of 25-40 seconds, and 3 local tectonic earthquakes with amplitudes of 1.9-38.1 millimeters s-p 4-5 seconds and durations of 22-88 seconds occurred.

PVMBG advises the public around Mount Ili Lewotolok as well as visitors/climbers/tourists not to enter or 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 fall/landslides and hot clouds from the South and Southeast sectors, West sector, and Northeast sector of Mount Ili Lewotolok.

Throughout 2025, MAGMA Indonesia has recorded 5,536 volcano eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,211 times), while Mount Ili Lewotolok erupted 223 times.

(Read: Countries with the Most Active Volcanoes in the World, Indonesia Ranks First)