Alert! Mount Semeru Erupted Again Tonight (Thursday, 15 October 2026)
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Mount Semeru in East Java erupted again on Thursday (15/10/2026) at 23:42 WIB. Over the past week, this volcano has erupted 35 times.
Per 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's eruption was still ongoing when this report was published.
(Read: Volcano Eruption Trends In Recent Years)
According to MAGMA Indonesia volcanic activity reports, Mount Semeru is set at Activity Level III (Alert Status). Seismic monitoring on 15 October 2026 between 12:00-18:00 WIB recorded 26 eruption earthquakes with 10-22 mm amplitude and 60-201 second duration.
Additionally, 9 rockfall earthquakes (2-5 mm amplitude, 27-58 sec duration) and 8 emission tremors (3-8 mm amplitude, 27-61 sec duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Beyond this radius, public activity is forbidden within 500 m of the Besuk Kobokan river banks, as pyroclastic surges and lahar flows may reach up to 17 km from the crater.
For the full year 2026, MAGMA Indonesia logged 5,124 volcanic eruptions across Indonesia, with Mount Semeru accounting for the highest total at 1,993 events.
"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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