Mount Semeru Erupted Again Early This Morning (Tuesday, 9 June 2026)
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Mount Semeru in East Java erupted again on Tuesday (9/6/2026) at 04:43 WIB. Over the past week, Mount Semeru has erupted 12 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached approximately 600 metres above the crater peak, or 4276 metres above sea level.
The ash column appeared grey, thick and drifted northwards. This eruption was recorded on seismographs with a maximum amplitude of 22 mm and lasted 192 seconds.
(Read: 10 Countries with Most Earthquakes 2023: Indonesia Ranks First)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert Status). Seismic monitoring between 18:00 - 23:59 WIB on 9 June 2026 recorded 19 eruption earthquakes (11-22 mm amplitude, 99-160 second duration).
Additionally, 2 emission earthquakes (4-8 mm amplitude, 39-46 second duration) and 2 distant tectonic earthquakes (11-18 mm amplitude, 16-36 s S-P interval, 68-87 second duration) were detected.
PVMBG warns against all activity in the southeastern sector along the Besuk Kobokan valley within 13 km of the summit. Outside this zone, public activity is prohibited within 500 metres of river banks along Besuk Kobokan, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia has logged 2446 volcanic eruptions nationwide. Mount Semeru has recorded the highest activity with 1201 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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