Alert! Mount Semeru Erupted Again Early This Morning (Sunday, 11 October 2026)
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Mount Semeru in East Java erupted again on Sunday (11/10/2026) at 02:06 WIB. Over the past week, Mount Semeru has erupted 34 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption was not visually observed. It was registered on seismographs with a maximum amplitude of 25 mm and 186-second duration.
(Read: Latest Five Earthquakes Recorded by BMKG (Wednesday, 22 April 2026 12:17:58 WIB))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring between 18:00–23:59 WIB on 11 October 2026 recorded 30 eruption earthquakes (10–24 mm amplitude, 64–161 second duration).
Additionally, 9 emission tremors (4–9 mm amplitude, 43–81 second duration) and 6 harmonic tremors (2–21 mm amplitude, 179–458 second duration) were detected.
PVMBG prohibits all activities in the southeast sector along the Besuk Kobokan valley within 13 km of the summit. Outside this zone, no activity is permitted within 500 m of riverbanks along Besuk Kobokan, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
For 2026 to date, MAGMA Indonesia has logged 5,040 volcanic eruptions nationwide. Mount Semeru (East Java) is the most active with 1,953 recorded eruptions.
(Read: Magnitude 5.1 Earthquake Strikes 242 Km West of Kurio)
"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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