Mount Semeru Erupted Again This Morning (Tuesday, 11 August 2026)
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Mount Semeru in East Java erupted again on Tuesday (11/8/2026) at 10.26 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 eruption visual was not observed. The event was recorded on seismograph with maximum amplitude 29 mm and 77 seconds duration.
(Read: 175 Disaster Events Recorded in Indonesia Early 2026, Floods Most Frequent)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru status remains at Level III (Alert). Seismic monitoring 00.00-06.00 WIB 11 August 2026 registered 23 eruption earthquakes: amplitude 12-23 mm, duration 59-137 seconds.
Additionally: 2 rockfall earthquakes (3-4 mm amplitude, 53-70 sec duration), and 10 gas emission earthquakes (2-7 mm amplitude, 35-83 sec duration).
PVMBG prohibits all activities along the Besuk Kobokan southeast sector within 13 km of the summit. Beyond this zone, public must avoid 500 metres from Besuk Kobokan river banks; pyroclastic surges and lahars may reach 17 km from the peak.
For 2026, MAGMA Indonesia has logged 3,886 volcanic eruptions nationwide. Mount Semeru leads with 1,589 recorded eruptions.
(Read: Fatalities Distribution from Aceh Floods & Landslides (9 December 2025))
"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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