Mount Semeru Erupted Again This Morning (Monday, 14 September 2026)
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Mount Semeru in East Java erupted again on Monday (14/9/2026) at 09:41 WIB. Over the past week, Mount Semeru has erupted 4 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 400 meters above the crater peak, or 4076 meters above sea level.
The ash column was observed white to grey, thick density, drifting eastward. This eruption was recorded on seismograph with maximum amplitude 25 mm, duration 105 seconds.
(Read: 91 Regencies/Cities Affected by Forest and Land Fires in Sumatra and Kalimantan)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Alert Level III. Seismic monitoring between 00:00 - 06:00 WIB on 14 September 2026 recorded 27 eruption earthquakes (amplitude 10-23 mm, duration 58-178 seconds), 9 rockfall earthquakes (amplitude 2-4 mm, 43-71 seconds), and 8 emission tremors (amplitude 2-7 mm, 41-76 seconds).
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public activity is also banned within 500 meters of river banks along Besuk Kobokan, due to risk of pyroclastic surges and lahar flows reaching up to 17 km from the peak.
For full year 2026, MAGMA Indonesia logged 4,630 volcanic eruptions nationwide. Mount Semeru recorded the highest activity with 1,809 eruption events.
(Read: Updated Hotspot Count for 6 Priority Forest Fire Mitigation Provinces (9 September 2026))
"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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