Volcanic ash from Mount Anak Krakatau reaches Jakarta

Ash from Mount Anak Krakatau reached Jakarta after the volcano began erupting on Friday night, according to Indonesia's Meteorology, Climatology and Geophysical Agency, known as BMKG.

BMKG reported two ash-distribution clusters at 4 a.m. local time on Sunday. The first moved toward Jakarta, Banten and West Java. Ash from the surface to 20,000 feet was observed toward the northeast and south, covering parts of Jakarta, Banten and West Java and nearby waters.

The second cluster extended from the southwest toward the northwest. It covered parts of Banten, Lampung and Bengkulu, the southern Sunda Strait and the Indian Ocean west of Bengkulu, Lampung and Banten. Ash in that area reached from the surface to 50,000 feet.

Because the ash had reached Jakarta and Banten, Soekarno-Hatta International Airport was temporarily closed until 9:30 a.m. local time.

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Based on information from PVMBG and VAAC Darwin, as well as analysis of Himawari-9 RGB imagery on Sept. 6, 2026, two clusters of volcanic ash from Mount Anak Krakatau were identified.