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Geological Agency of Indonesia

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Situations

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Indonesia volcanic activity late July 2026

33 clusters · 45 sources · last updated

Latest: Indonesia faces multiple volcanic eruptions and forest fires

Indonesia’s principal volcanoes remained unsettled through late July 2026. After the July 18 eruptions of Gunung Semeru that sent a 1-km ash column skyward and prompted a Level III alert with a 5-km summit exclusion and

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Anak Krakatau volcanic activity

2 clusters · 5 sources · last updated

Latest: Anak Krakatau volcano erupts multiple times in Sunda Strait

The Anak Krakatau volcano in the Sunda Strait has experienced a period of increased volcanic activity. In late July 2026, the volcano erupted twice, producing ash plumes approximately 300 metres above the crater. Followi