Mount Semeru Erupts Again Tonight, Ash Column Height Around 1,000 Meters
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Mount Semeru in East Java erupted again on Tuesday (14/7/2026) at 00:32 WIB. Over the past week, Mount Semeru has erupted 10 times.
According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height is around 1,000 meters above the peak or 4,676 meters above sea level.
The ash column appeared white to grey with moderate intensity, drifting southwest. Semeru's eruption was ongoing when this report was published.
(Read: Countries With The Most Active Volcanoes In The World, Indonesia Ranks First)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is set at Activity Level III (Alert). Seismic monitoring on 14 July 2026 between 18:00–23:59 WIB recorded 17 eruption earthquakes with amplitude 11–22 mm, duration 96–145 seconds.
Additionally, 3 rockfall earthquakes (2–4 mm amplitude, 30–50 sec duration) and 6 degassing earthquakes (3–6 mm amplitude, 48–51 sec duration) were detected.
PVMBG prohibits all activity in the southeast sector along Besuk Kobokan within 13 km of the summit. Beyond that zone, no activity is allowed 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 3,161 volcanic eruptions nationwide. Mount Semeru recorded the highest number at 1,395 eruptions.
(Read: Indonesia Has The Most Active Volcanoes In The World)
"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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