Mount Semeru Erupted Again This Morning (Friday, 28 August 2026)
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Mount Semeru in East Java erupted again on Friday (28/8/2026) at 09:06 WIB. Over the past week, Mount Semeru has erupted 19 times.
Based on 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 (4,376 meters above sea level).
The ash column appeared white to grey, with thick density drifting towards southeast and south directions. This eruption was registered on seismographs with maximum 22 mm amplitude and 125 seconds duration.
(Read: Indonesia Air Quality Slightly Improved in 2021)
According to MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring between 00:00-06:00 WIB on 28 August 2026 recorded 21 eruption earthquakes with 10-22 mm amplitude and 67-120 second duration.
Additionally, 2 rockfall earthquakes (2-12 mm amplitude, 56-88 second duration) and 2 gas emission earthquakes (6-8 mm amplitude, 52-77 second duration) were detected.
PVMBG advises against all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, the public must avoid areas within 500 m of Besuk Kobokan river banks, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia logged 4,318 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,707 eruptions.
(Read: Jakarta Morning Air Quality Ranked 3rd Worst Globally (Tuesday, 6 June 2023))
"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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