Mount Semeru Erupted Again Early This Morning (Friday, 11 September 2026)
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Mount Semeru in East Java erupted again on Friday (11/9/2026) at 04:27 WIB. Over the past week, Mount Semeru has erupted 20 times.
According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption visual was not observed. Mount Semeru eruption was still ongoing when this report was published.
(Read: Hundreds of Natural Disasters Recorded Until Early April 2024, Floods Most Frequent)
Per MAGMA Indonesia volcanic activity report, Mount Semeru activity status is set at Level III (Alert). Seismic monitoring on 11 September 2026 between 18:00 - 23:59 WIB recorded 33 eruption earthquakes with 12-23 mm amplitude and 57-162 seconds duration.
Additionally, 2 rockfall earthquakes (1-4 mm amplitude, 49-59 seconds duration) and 7 harmonic tremors (7-14 mm amplitude, 154-411 seconds duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km from the summit. Outside this radius, no activity is allowed within 500 m of Besuk Kobokan river banks, as pyroclastic flow and lahar hazards may reach up to 17 km from the crater.
During 2026, MAGMA Indonesia logged 4,557 volcanic eruptions across Indonesia. Mount Semeru (East Java) recorded the highest activity with 1,774 eruptions.
(Read: 2 Thousand Natural Disasters Occurred In Indonesia In 2024, Floods Dominated)
"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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