Eruption
Mount Semeru erupts again with plume reaching 1,000 meters
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Mount Semeru, on the border of Lumajang and Malang in East Java, erupted again on Saturday morning (December 20, 2025) with an ash column reaching 1,000 meters above the peak. This marks the 11th eruption since early morning, accompanied by intense seismic activity. PVMBG maintains Alert Level III status and urges residents to avoid hazardous areas.
Mount Semeru on the border of Lumajang and Malang, East Java, erupted on Thursday night, January 1, 2026, with an eruption column reaching 900 meters above the peak. This marks the fourth eruption of the day, following three in the morning. The Center for Volcanology and Geological Hazard Mitigation (PVMBG) maintains alert status and issues safety recommendations for nearby residents.
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Mount Semeru on the border of Lumajang and Malang in East Java erupted 16 times on Wednesday morning. The highest eruption reached 1,100 meters above the summit at 05:55 WIB. PVMBG recommends residents avoid hazardous areas to prevent disaster risks.