Mount Ili Lewotolok Erupted on Monday Afternoon, Activity Status at Alert Level
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Mount Ili Lewotolok in East Nusa Tenggara erupted again on Monday (21/9/2026) at 12:23 WITA. It has erupted twice in the past week.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app, the observed ash column reached 800 m above the peak, or 2223 m above sea level.
The grey thick ash column drifted west and northwest. This eruption registered on seismographs with 40 mm maximum amplitude and 29 second duration.
(Read: Indonesia Air Quality Slightly Improved in 2021)
Per MAGMA Indonesia volcano activity reports, Mount Ili Lewotolok is at Level II (Alert). Seismic monitoring on 21 September 2026 (00:00-23:59 WITA) recorded 277 eruption earthquakes (8.8-40 mm amplitude, 35-114 sec duration).
Additionally there were 2 rockfall earthquakes (4.4-11.1 mm, 41-70 sec) and 112 gas emission earthquakes (0.6-27.6 mm, 24-60 sec).
PVMBG warns residents, visitors, hikers and tourists not to enter the 2 km exclusion zone, nor the 3 km restricted sector south / southeast of the volcano active centre.
During 2026, MAGMA Indonesia logged 4736 volcanic eruptions nationwide. Mount Semeru (East Java) had the highest count at 1839 eruptions, while Mount Ili Lewotolok recorded 146 eruptions.
(Read: Jakarta Recorded Second Worst Global Morning Air Quality (Friday 17 June 2022))
"Disclosure: This is an AI-generated translation of the original article. We strive for accuracy, but please note that automated translations may contain errors or slight inconsistencies."
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