Warning! Mount Semeru Erupts Again Tonight (Wednesday, 09 September 2026)
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Mount Semeru in East Java erupted again on Wednesday (9/9/2026) at 00:15 WIB. Over the past week, Mount Semeru has erupted 6 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, no visual eruption was observed. Mount Semeru's eruption was still ongoing at the time this report was published.
(Read: Not Jakarta: Here is the Region with the Worst Air Quality in Indonesia (Wednesday, 7 June 2023))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru activity status is at Level III (Alert). Seismic monitoring on 9 September 2026 between 18:00 – 23:59 WIB recorded 32 eruption earthquakes with 11–22 mm amplitude and 88–127 seconds duration.
Additionally, 1 collapse earthquake (4 mm amplitude, 55 seconds duration) and 5 harmonic tremors (6–11 mm amplitude, 98–152 seconds duration) were detected.
PVMBG advises all activities are prohibited in the southeast sector along Besuk Kobokan, within 13 km from the summit (eruption centre. Outside this zone, public activities are forbidden within 500 m from river banks along Besuk Kobokan, as these areas are at risk from extended pyroclastic flows and lahar reaching up to 17 km from the peak.
During 2026, MAGMA Indonesia has recorded 4,506 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,760 eruptions.
(Read: Air Quality in Indonesia Showed Slight Improvement in 2021)
"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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