Alert! Mount Semeru Erupted Again This Afternoon (Monday, 12 October 2026)
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Mount Semeru in East Java erupted again on Monday (12/10/2026) at 16:29 WIB. Over the past week, Mount Semeru has erupted 7 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 700 meters above the summit, or 4376 meters above sea level.
The ash column appeared white to grey, with thick intensity drifting southwest. This eruption was recorded on seismographs with maximum amplitude 25 mm and duration 103 seconds.
(Read: Hundreds of Natural Disasters Recorded Up To Early April 2024, Floods Most Frequent)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert Status). Seismic monitoring on 12 October 2026 06:00-12:00 WIB recorded 24 eruption earthquakes with amplitude 11-24 mm and duration 72-149 seconds.
Additionally, 1 rockfall earthquake (3 mm amplitude, 46 sec duration) and 5 gas emission earthquakes (2-7 mm amplitude, 42-56 sec duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan up to 13 km from the summit. Outside this zone, no activity is permitted within 500 meters of river banks along Besuk Kobokan, as pyroclastic flows and lahars may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia has logged 5,070 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,965 eruptions.
(Read: Count of Slightly Damaged Houses Due to Natural Disasters in Indonesia 2015-2024)
"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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