Mount Semeru Erupted Again Early This Morning (Monday, 12 October 2026)
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Mount Semeru in East Java erupted again on Monday (12/10/2026) at 01.45 WIB. Over the past week, this was only its single eruption.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app: no visual eruption was observed. The event was registered on seismographs with maximum amplitude 25 mm, lasting 102 seconds.
(Read also: Alert: Jakarta Had the Worst Air Quality in the World This Morning (Thursday, 15 June 2023))
MAGMA Indonesia activity reports place Mount Semeru at Alert Level III. Seismic monitoring on 12 Oct 2026 18:00-23:59 WIB recorded: 30 eruption earthquakes (amplitude 11-23 mm, duration 67-152 sec), 1 collapse earthquake (2 mm, 81 sec), 2 gas emission quakes (3-4 mm, 35-49 sec).
PVMBG prohibits all activities within the southeast zone along Besuk Kobokan, up to 13 km from the crater. Outside this zone, public activity is also banned within 500 m of Besuk Kobokan river banks: pyroclastic surges and lahars may reach up to 17 km from the summit.
For 2026 to date, MAGMA Indonesia logged 5,058 volcanic eruptions nationwide. Mount Semeru recorded the highest count at 1,959 events.
(Read also: Jatibening Listed Among Top 15 Best Air Quality Locations in Indonesia (September 2023))
"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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