Mount Semeru Erupts Again Tonight (Wednesday, 20 May 2026)
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Mount Semeru in East Java erupted again on Wednesday (20/5/2026) at 18:30 WIB. Over the past week, Mount Semeru has erupted 11 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption visual was not observed. Mount Semeru eruption was ongoing when this report was published.
(Read: Not Jakarta: This is the Region with the Worst Air Quality in Indonesia (Wednesday, 7 June 2023))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru activity status is set at Level III (Alert). Seismic monitoring on 20 May 2026 between 12:00-18:00 WIB recorded 15 eruption earthquakes with 10-22 mm amplitude and 63-152 second duration.
Additionally, 4 emission earthquakes with 4-5 mm amplitude and 30-61 second duration, plus 3 distant tectonic earthquakes with 4-35 mm amplitude, 18-78 second S-P interval, and 60-219 second duration were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Beyond this zone, public activities are forbidden within 500 meters of the riverbanks along Besuk Kobokan, as pyroclastic surge and lahar hazards may reach up to 17 km from the summit.
Throughout 2026, MAGMA Indonesia has recorded 2,071 volcanic eruptions nationwide. Mount Semeru in East Java recorded the highest eruption count with 1,040 events.
(Read: How Can Residents Identify Clean Air Amid Poor Air Quality Conditions?)
"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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