Alert! Mount Semeru Erupts Again Tonight (Tuesday, 16 June 2026)
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Mount Semeru in East Java erupted again on Tuesday (16/6/2026) at 19:37 WIB. Over the past week, Mount Semeru has erupted 18 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app, the observed ash column reached approx 800?m above the summit (4476?m above sea level).
The ash column appeared white to grey, with moderate intensity drifting westwards. This eruption was still ongoing when this report was published.
(Related: Fatalities Distribution from Floods & Landslides in Aceh (9 December 2025))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert). Seismic monitoring on 16 June 2026 between 12:00–18:00 WIB recorded 12 eruption earthquakes (amplitude 12–22?mm, duration 85–154?s).
Additionally, 5 emission earthquakes (2–4?mm amplitude, 44–62?s duration) and 2 harmonic tremor events (2?mm amplitude, 401–415?s duration) were detected.
PVMBG advises: No activities are permitted in the southeast sector along Besuk Kobokan within 13?km of the summit. Outside this zone, avoid activities within 500?m of Besuk Kobokan river banks; pyroclastic flows and lahar may reach up to 17?km from the peak.
For 2026 up to this date, MAGMA Indonesia logged 2703 volcanic eruptions nationwide. Mount Semeru (East Java) recorded the highest count at 1269 eruptions.
(Related: Damaged Houses Count from Sumatra Floods & Landslides (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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