Alert! Mount Semeru Erupted Again This Morning (Tuesday, 13 October 2026)
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Mount Semeru in East Java erupted again on Tuesday (13/10/2026) at 08.10 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 800 meters above the crater peak, or 4476 meters above sea level.
The ash column appeared white to grey, thick in density, drifting southwest and west. This eruption was recorded on seismographs with maximum amplitude 22 mm and duration 157 seconds.
(Read: 207 Thousand Houses Flooded Early 2026, Highest Count in Central Java)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert Status). Seismic monitoring between 00.00-06.00 WIB on 13 October 2026 recorded 28 eruption earthquakes with amplitude 12-25 mm and duration 75-137 seconds.
Additionally, 3 rockfall earthquakes (amplitude 1-4 mm, 54-61 sec duration) and 3 harmonic tremor events (amplitude 7-11 mm, 142-347 sec duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, residents must avoid the 500 meter river buffer zone along Besuk Kobokan, as pyroclastic flows and lahars may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia has logged 5,089 volcanic eruptions across Indonesia. Mount Semeru (East Java) recorded the highest activity with 1,978 eruptions.
(Read: Damaged House Count from Floods & Landslides, Sumatra (16 December 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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