Mount Ili Lewotolok Erupted on Thursday Night; Status Remains on Alert

Mount Ili Lewotolok in East Nusa Tenggara erupted again on Thursday, January 23, 2025, at 6:38 PM WITA. In the last week, Mount Ili Lewotolok has erupted 6 times.

According to 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 approximately 500 meters above the peak (1,923 meters above sea level).

The ash column was observed to be white to gray with thick intensity towards the east. The eruption was recorded on a seismograph with a maximum amplitude of 2.5 millimeters and a duration of 33 seconds.

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ili Lewotolok is at Level II (Alert). Seismic observations on January 23, 2025, from 00.00 to 23.59 WITA showed 3 eruption quakes with amplitudes of 1.5-10.3 millimeters and durations of 37-44 seconds.

Then, there were 21 puffing quakes with amplitudes of 1.2-7.9 millimeters and durations of 16-56 seconds, and 2 local tectonic quakes with amplitudes of 2.6-4.2 millimeters s-p 3.8-9.5 seconds and durations of 16-39 seconds.

PVMBG urges the community around Mount Ili Lewotolok and visitors/climbers/tourists to not enter and not carry out activities within a 2-kilometer radius of the center of Mount Ili Lewotolok's activity, and the communities of Lamatokan and Jontona villages to always be aware of the potential threat of lava collapse/landslides from the east of the peak/crater of Mount Ili Lewotolok.

During 2025, MAGMA Indonesia has recorded 663 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java had the most eruptions (328 eruptions), while Mount Ili Lewotolok erupted 7 times.