Alert! Mount Semeru Erupted Again This Morning (Friday, June 12, 2026)
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Mount Semeru in East Java erupted again on Friday (12/6/2026) at 05:12 WIB. Over the past week, Mount Semeru has erupted 49 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption visual was not observed. Mount Semeru's eruption was still ongoing when this report was published.
(Read: After Previous Surge, Natural Disaster Occurrences in Indonesia Decreased in 2024)
Per MAGMA Indonesia volcano activity reports, Mount Semeru is at Activity Level III (Alert). Seismic monitoring on June 12 2026 between 18:00-23:59 WIB recorded 20 eruption earthquakes with 10-22 mm amplitude and 72-129 second duration.
Additionally: 4 fall earthquakes (1-4 mm amplitude, 40-65 sec duration) and 7 emission earthquakes (2-5 mm amplitude, 41-64 sec duration).
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public activity is forbidden within 500 m of Besuk Kobokan river banks, as pyroclastic surges and lahar flows may reach up to 17 km from the crater.
During 2026 so far, MAGMA Indonesia registered 2,562 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,238 eruptions.
(Read: Natural Disaster Occurrences in Java Island Provinces 2020-2024)
"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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