Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.Original VAAC bulletin:FVAU02 at 21:55 UTC, 21/08/26 from ADRMVA ADVISORYDTG: 20260821/2200ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2026/955INFO SOURCE: HIMAWARI-9, CVGHMERUPTION DETAILS: VA TO FL150 MOV SEOBS VA DTG: 21/2120ZOBS VA CLD: SFC/FL150 S0802 E11256 - S0828 E11323 - S0837 E11302 - S0804 E11251 MOV SE 15KTFCST VA CLD +6 HR: 22/0320Z SFC/FL150 S0802 E11256 - S0828 E11323 - S0837 E11302 - S0804 E11251FCST VA CLD +12 HR: 22/0920Z SFC/FL150 S0802 E11256 - S0828 E11323 - S0837 E11302 - S0804 E11251FCST VA CLD +18 HR: 22/1520Z SFC/FL150 S0802 E11256 - S0828 E11323 - S0837 E11302 - S0804 E11251RMK: INTERMITTENT DISCRETE ERUPTION IDENTIFIABLE ON RGB SATELLITE IMAGERY. GROUND REPORT CONFIRM ONGOING INTERMITTENT ERUPTIONS. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260822/0400Z=