Alert! Mount Semeru Erupted Again This Morning (Tuesday, 6 October 2026)
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Mount Semeru in East Java erupted again on Tuesday (6/10/2026) at 07.42 WIB. Over the past week, Mount Semeru has erupted 5 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached 800 metres above the crater peak, or 4476 metres above sea level.
The grey, dense ash column drifted northwards. This eruption was recorded on seismographs with maximum amplitude 22 mm, lasting 121 seconds.
(Read: Indonesia Has the Most Active Volcanoes in the World)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is at Alert Level III. Seismic monitoring between 00.00–06.00 WIB on 6 October 2026 recorded 22 eruption earthquakes (11–23 mm amplitude, 87–154 second duration).
Additionally, 9 rockfall earthquakes (2–6 mm, 44–87 seconds) and 4 degassing tremors (2–6 mm, 35–74 seconds) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, no activities are permitted within 500 m of Besuk Kobokan river banks, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia logged 4950 volcanic eruptions nationwide. Mount Semeru (East Java) recorded the highest activity with 1924 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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