Mount Semeru Erupts Again This Afternoon (Thursday, 21 May 2026)
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Mount Semeru in East Java erupted again on Thursday (21/5/2026) at 13:42 WIB. Over the past week, Mount Semeru has erupted 20 times.
According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption visual was not observed. Mount Semeru's eruption was ongoing when this report was published.
(Read: Floods & Forest Fires: Most Common Disasters in Indonesia 2025)
Per MAGMA Indonesia volcano activity reports, Mount Semeru is at Activity Level III (Alert). Seismic monitoring on 21 May 2026 06:00-12:00 WIB recorded 17 eruption earthquakes (10-22 mm amplitude, 74-195 sec duration) and 4 emission earthquakes (4-6 mm amplitude, 45-69 sec duration).
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, residents must avoid the 500m river buffer along Besuk Kobokan due to pyroclastic flow and lahar risks up to 17 km from the peak.
During 2026, MAGMA Indonesia recorded 2,086 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 1,049 eruptions.
(Read: Damaged Houses Count From Sumatra Floods & Landslides (17 Dec 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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