06/09/2026
Indonesia Eruption
The Mount Anak Krakatau volcano, about 80nm west of Jakarta, has erupted, with volcanic ash now affecting a large area across the WIII/Jakarta and YMMM/Melbourne FIRs.
The latest Sigmets show ash up to FL500, extending southwest from Indonesia well into the Indian Ocean. Lower-level ash has also been reported up to FL120.
Both WIII/Jakarta Soekarno-Hatta and WIHH/Jakarta Halim are closed, with the Notams currently running until 1030Z, 6 Sep.
Dozens of flights between Australia and the Middle East have diverted to Singapore as a fuel stop. Current forecasts show the ash continuing to move away from Jakarta at around 10 knots.