Mount Semeru Erupts Again This Morning, Volcanic Ash Reaches 600 Meters Above Summit
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Mount Semeru in East Java erupted again on Tuesday (19/5/2026) at 05.45 WIB. Over the past week, this volcano has erupted 4 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app, observed ash column height was around 600 m above the summit, or 4,276 m above sea level.
The grey, thick ash column drifted southwest. This eruption registered on seismographs with maximum 22 mm amplitude and 138 seconds duration.
(Read: Warning: Jakarta Had World's Worst Air Quality This Morning (Thursday 15 June 2023))
As per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Alert Level III. Seismic monitoring on 19 May 2026 18:00-23:59 WIB recorded 21 eruption earthquakes (10-22 mm amplitude, 86-215s duration).
Additionally: 4 degassing earthquakes (2-4 mm, 77-86s), plus 1 local tectonic earthquake (15 mm, 37s duration).
PVMBG prohibits all activity in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, stay 500m away from Besuk Kobokan river banks; pyroclastic flows and lahars may reach 17 km from the peak.
For 2026, MAGMA Indonesia logged 2,046 volcanic eruptions nationwide. Mount Semeru accounted for the most, with 1,033 recorded eruptions.
(Read: West Kalimantan Had Indonesia's Worst Air Quality This Morning (Friday 18 August 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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