Alert! Mount Semeru Erupts Again Tonight (Sunday, 9 August 2026)
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Mount Semeru in East Java erupted again on Sunday (9/8/2026) at 18:24 WIB. Over the past week, Mount Semeru has erupted 63 times.
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 900 meters above the crater peak, or 4576 meters above sea level.
The ash column appeared white to grey with moderate intensity, drifting southwest. Semeru's eruption was still ongoing at the time this report was published.
(Read: Estimated Forest & Land Fire Area in West Kalimantan Province 2016-2025)
According to MAGMA Indonesia volcanic activity reports, Mount Semeru is currently set at Activity Level III (Alert Status). Seismic monitoring on 9 August 2026 between 12:00-18:00 WIB recorded 26 eruption earthquakes with 13-22 mm amplitude and 63-127 second duration.
Additionally, 2 collapse earthquakes (2-3 mm amplitude, 37-59 second duration) and 4 emission earthquakes (3-5 mm amplitude, 38-52 second duration) were detected.
PVMBG has prohibited all activities in the southeast sector along the Besuk Kobokan valley within 13 km of the summit. Outside this zone, public activities are also banned within 500 meters of river banks along Besuk Kobokan, as pyroclastic flows and lahars may reach up to 17 km from the crater.
During 2026, MAGMA Indonesia has recorded a total of 3844 volcanic eruptions across Indonesia. Mount Semeru (East Java) accounts for the highest number with 1575 eruptions.
(Read: 5 Provinces with Most Peatland Fire Hotspots as of August 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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