Mount Ili Lewotolok Erupted Friday Afternoon, Activity Status Set to Alert Level
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Mount Ili Lewotolok in East Nusa Tenggara erupted again on Friday (11/9/2026) at 16:21 WITA. Over the past week, this volcano has erupted 24 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached 600 meters above the crater peak, or 2023 meters above sea level.
The thick grey ash column drifted towards southwest and west. This eruption was recorded on seismograph with maximum 40mm amplitude and 44 seconds duration.
(Read: Countries With Most Active Volcanoes Worldwide: Indonesia Ranks First)
Per MAGMA Indonesia volcanic activity report, Mount Ili Lewotolok is currently at Level II (Alert). Seismic monitoring on 11 September 2026 (00:00-23:59 WITA) logged 322 eruption earthquakes with 22-40mm amplitude and 35-101 seconds duration.
Additionally, 84 emission tremors (4.4-33.2mm amplitude, 20-65s duration) and 5 harmonic tremors (4.4-40mm amplitude, 116-200s duration) were detected.
PVMBG urges local residents, visitors, hikers and tourists to avoid entering or conducting activities within 2km radius, and within 3km zone on southern and southeastern sectors of the volcano.
For full year 2026, MAGMA Indonesia recorded 4,572 volcanic eruptions across Indonesia. Mount Semeru (East Java) recorded the highest eruptions at 1780 events, while Mount Ili Lewotolok recorded 112 eruptions.
(Read: Indonesia Has The Highest Number Of Active Volcanoes In The World)
"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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