Mount Semeru Erupted Again This Morning, Volcanic Ash Height 1,200 Meters Above Summit
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Mount Semeru in East Java erupted again on Wednesday (10/6/2026) at 05:35 WIB. Over the past week, Mount Semeru has erupted 29 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached 1,200 meters above the summit, or 4,876 meters above sea level.
The ash column appeared white to grey with moderate intensity, drifting northward. Semeru eruption was ongoing at the time this report was published.
(Read: Kurious Survey: Most People Perceive Poor Air Quality in Indonesia)
MAGMA Indonesia volcanic activity reports set Mount Semeru at Activity Level III (Alert). Seismic monitoring on 10 June 2026 between 18:00-23:59 WIB recorded 21 eruption earthquakes with amplitude 10-22 mm, duration 76-147 seconds.
Additionally: 3 rockfall earthquakes (4-6 mm amplitude, 45-126s duration), 4 degassing tremors (3-7 mm amplitude, 51s duration).
PVMBG warns: No activities are permitted southeast along Besuk Kobokan within 13 km of the summit. Outside this zone, stay at least 500 m from Besuk Kobokan river banks – pyroclastic surges and lahars may reach up to 17 km from the crater.
During 2026, MAGMA Indonesia logged 2,490 volcanic eruptions nationwide; Mount Semeru recorded the highest count with 1,218 eruptions.
(Read: Alert: Jakarta Recorded World's Worst Morning Air Quality (Thursday, 15 June 2023))
"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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