Alert! 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 05:53 WIB. This volcano has erupted twice within the past week.
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 4,476 meters above sea level.
The thick grey ash column drifted towards the north and northwest. This eruption was recorded on seismographs with maximum 23 mm amplitude and 133 seconds duration.
(Read: Hotspot Count in 6 Priority Provinces for Forest & Land Fire Handling (7 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 14 September 2026 recorded 27 eruption earthquakes (10–23 mm amplitude, 58–178 second duration), 9 rockfall earthquakes (2–4 mm amplitude, 43–71 second duration), and 8 gas emission earthquakes (2–7 mm amplitude, 41–76 second duration).
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the crater. Outside this zone, no activity is allowed within 500 meters of Besuk Kobokan river banks, as pyroclastic flows and lahar may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia logged 4,625 volcanic eruptions nationwide. Mount Semeru recorded the highest activity with 1,807 eruptions this year.
(Read: Hotspot Update in 6 Priority Provinces for Forest & Land Fire Handling (8 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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