Alert! Mount Semeru Erupts Again Tonight (Wednesday, 30 September 2026)
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Mount Semeru in East Java erupted again on Wednesday (30/9/2026) at 20:03 WIB. Over the past week, Mount Semeru has erupted 27 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption plume was not visually observed. Mount Semeru eruption was still ongoing when this report was published.
(Read: Here Are The 10 Largest Earthquakes In Recorded History, Two Occurred In Indonesia)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru activity status is set at Level III (Alert). Seismic monitoring between 12:00 - 18:00 WIB on 30 September 2026 recorded 24 eruption earthquakes with 15-22 mm amplitude and 91-145 second duration.
Additionally, 3 collapse earthquakes (4-6 mm amplitude, 43-81 sec duration) and 4 emission earthquakes (4-6 mm amplitude, 53-102 sec duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan, within 13 km from the summit. Beyond this zone, public activities are forbidden within 500 m of river banks along Besuk Kobokan, due to risk of pyroclastic surges and lahars reaching up to 17 km from the crater.
During 2026, MAGMA Indonesia logged 4,870 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,893 eruptions.
(Read: Indonesia Ranked As Country Most Frequently Hit By Earthquakes As Of 2025)
"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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