Mount Semeru Erupts Again Tonight (Tuesday, 15 September 2026)
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Mount Semeru in East Java erupted again on Tuesday (15/9/2026) at 00:10 WIB. Over the past week, Mount Semeru has erupted 7 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 recorded on seismographs with maximum amplitude 22 mm, duration 145 seconds.
(Read: 4.2 Magnitude Earthquake Strikes Fox Aleutian Islands)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring 15 September 2026 18:00-23:59 WIB recorded 26 eruption earthquakes (amplitude 10-22 mm, duration 71-181 seconds).
Additionally: 3 emission earthquakes (2-6 mm, 34-57 sec), 2 harmonic tremors (3 mm, 192-618 sec).
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan up to 13 km from the summit. Outside this zone, no activity is allowed within 500 m of Besuk Kobokan river banks; pyroclastic surges and lahars may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia logged 4,643 volcanic eruptions across Indonesia. Mount Semeru recorded the highest activity with 1,812 eruptions.
"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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