Alert! Mount Semeru Erupted Again This Morning (Friday, 25 September 2026)
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Mount Semeru in East Java erupted again on Friday (25/9/2026) at 06:14 WIB. Over the past week, Mount Semeru has erupted 10 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 approximately 700 meters above the crater peak, or 4376 meters above sea level.
The ash column appeared white to grey, dense, drifting northeast. This eruption was recorded on seismograph with maximum 22 mm amplitude and 138 second duration.
(Read: Wildfire Casualties Update: 347 Injured, 4 Dead (9 September 2026))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring between 00:00-06:00 WIB on 25 September 2026 registered 32 eruption earthquakes (10-22 mm amplitude, 71-160 second duration).
Additionally, 6 rockfall earthquakes (1-4 mm amplitude, 32-96 second duration) and 1 degassing earthquake (4 mm amplitude, 74 second duration) 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: hot pyroclastic surges and lahars may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia logged 4771 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1847 eruptions.
(Read: 5 Companies Sanctioned by Ministry of Environment Over Wildfires: Affected Area Details)
"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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