Mount Semeru Erupted Again This Morning (Monday, 8 June 2026)
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Mount Semeru in East Java erupted again on Monday (8/6/2026) at 05:25 WIB. Over the past week, this was the only eruption recorded for Mount Semeru.
Based on eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached approximately 300 meters above the summit (3,976 meters above sea level).
The ash column appeared grey with thick density, drifting westwards. This eruption was recorded on seismographs with a maximum amplitude of 22 millimeters and lasted 118 seconds.
(Read: 2 Thousand Natural Disasters Occurred in Indonesia in 2024, Floods Were Most Common)
According to MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring between 00:00-06:00 WIB on 8 June 2026 recorded 18 eruption earthquakes with amplitudes 10-22 mm and durations 73-192 seconds.
Additionally, 5 rockfall earthquakes (amplitude 2-3 mm, duration 45-76 seconds) and 4 degassing earthquakes (amplitude 2-8 mm, duration 45-66 seconds) were detected.
PVMBG prohibits all activities in the southeast sector along the Besuk Kobokan valley up to 13 km from the summit. Outside this zone, people must avoid approaching within 500 meters of river banks along Besuk Kobokan, as pyroclastic flows and lahar may travel up to 17 km from the summit.
For the year 2026 so far, MAGMA Indonesia has documented 2,414 volcanic eruptions across Indonesia, with Mount Semeru accounting for the highest number at 1,190 events.
(Read: Number of Natural Disasters 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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