Mount Ili Lewotolok Erupts in Indonesia’s East Nusa Tenggara

Mount Ili Lewotolok erupted Sunday morning, sending a gray column of ash 400 meters above its summit in Lembata, East Nusa Tenggara.

Indonesia’s Geological Agency recorded the eruption at 6:11 a.m. local time on Sept. 6. The ash column moved west with thick intensity. Seismographs recorded a maximum amplitude of 40 millimeters, and the eruption lasted 40 seconds.

The volcano has erupted repeatedly. On Tuesday morning, Sept. 1, it produced two eruptions, according to the report.

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An eruption of Mount Ili Lewotolok occurred on Sunday, Sept. 6, 2026, at 6:11 a.m. local time. The observed eruption column reached approximately 400 meters above the summit, or approximately 1,823 meters above sea level.

The Geological Agency urged residents, hikers and tourists not to enter or conduct activities within a 2-kilometer radius of the volcano’s activity center. It also set a restricted area extending 3 kilometers to the south and southeast.

Authorities warned of possible falling or sliding lava and hot clouds in the southern and southeastern sectors, as well as the western and northeastern sectors. Residents were advised to wear masks and protect their eyes and skin, cover clean-water containers, and coordinate with the Ili Lewotolok observation post or Indonesia’s Geological Agency for updates.

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Residents around Mount Ili Lewotolok, as well as visitors, hikers and tourists, should not enter or conduct activities within a 2-kilometer radius and within the 3-kilometer southern and southeastern sectors from the volcano’s activity center.