Mount Semeru Erupted Again This Afternoon (Monday, 5 October 2026)
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Mount Semeru in East Java erupted again on Monday (5/10/2026) at 13:12 WIB. Over the past week, Mount Semeru has erupted twice.
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. The event was recorded on seismograph with maximum amplitude 25 mm and 98 second duration.
(Read: Natural Disasters Damaged 220 Thousand Buildings in Indonesia in 2025)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru activity status is set at Level III (Alert). Seismic monitoring between 06:00-12:00 WIB on 5 October 2026 recorded 32 eruption earthquakes with 10-22 mm amplitude and 79-135 second duration.
Additionally, 2 collapse earthquakes (5-10 mm amplitude, 71-77 second duration) and 3 harmonic tremors (3-4 mm amplitude, 207-930 second duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit eruption centre. Outside this zone, public activities are also forbidden within 500 metres of river banks along Besuk Kobokan, as this area remains at risk from extended pyroclastic surges and lahar flows reaching up to 17 km from the peak.
During 2026, MAGMA Indonesia logged a total of 4,927 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,916 eruptions.
(Read: Data: Number of Houses Submerged Due Natural Disasters in Indonesia 2014)
"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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