Mount Semeru Erupted Again This Morning, Eruption Height Reaches 300 Meters Above The Summit
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Mount Semeru in East Java erupted again on Saturday (26/09/2026) at 05:27 WIB. Over the past week, Mount Semeru has erupted 20 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 300 meters above the summit, or 3976 meters above sea level.
The ash column appeared white to grey with moderate intensity, drifting northwards. Mount Semeru eruption was still ongoing when this report was published.
(Read: Volcanic Eruption Trends In Recent Years)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is set at Activity Level III (Alert). Seismic monitoring on September 26 2026, 18:00–23:59 WIB recorded 31 eruption earthquakes with 12–25 mm amplitude and 90–128 seconds duration.
Additionally, 3 rockfall earthquakes (2–4 mm amplitude, 44–60 seconds) and 4 harmonic tremors (4–7 mm amplitude, 95–160 seconds) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public activities are forbidden within 500 meters of Besuk Kobokan river banks, as pyroclastic surges and lahars may reach up to 17 km from the summit.
Throughout 2026, MAGMA Indonesia registered 4,792 volcanic eruptions nationwide. East Java's Mount Semeru recorded the highest activity with 1,857 eruptions.
(Read: Indonesia Ranks First Globally For Number Of Active Volcanoes)
"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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