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Center for Volcanology and Geological Hazard Mitigation

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Situations

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Anak Krakatau volcanic activity and new land formation

7 clusters · 59 sources · last updated

Latest: Mount Anak Krakatau alert level raised to Watch following eruptions

The Anak Krakatau volcano in the Sunda Strait has undergone a shift in activity levels. In mid-September 2026, the volcano transitioned from a period of continuous eruption to a Strombolian phase, marked by more episodic

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Indonesia volcanic activity September-October 2026

45 clusters · 77 sources · last updated

Latest: Mount Semeru and Mount Merapi show increased volcanic activity

Indonesia’s volcanic activity intensified through August and early September 2026. Between August 18 and 20, Mount Ibu, Mount Lewotobi Laki-laki, and Mount Semeru all experienced eruptions. Mount Ibu was placed at Level

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Search ends for missing journalists near Anak Krakatau

18 clusters · 521 sources · last updated

Latest: Surakman identified as crew member of missing KM Arupadatu I

Indonesian authorities have officially terminated the search and rescue operation for eight people missing in the Sunda Strait. The group, consisting of five journalists and three crew members aboard the speedboat KM Aru

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Anak Krakatau volcanic activity and ash impact

6 clusters · 39 sources · last updated

Latest: Anak Krakatau eruptions disrupt aviation and impact regional air quality

Mount Anak Krakatau in the Sunda Strait experienced a period of intense volcanic activity in late August 2026. During this time, the volcano produced frequent eruptions, including a series of events on August 24 and 25 t