Satellite image of Semeru volcano on 22 Sep 2026Explosive 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 21:46 UTC, 22/09/26 from ADRMVA ADVISORYDTG: 20260922/2150ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2026/1087INFO SOURCE: HIMAWARI-9, CVGHMERUPTION DETAILS: VA TO FL150 OBS AT 22/0950Z MOV NEEST VA DTG: 22/2130ZEST VA CLD: SFC/FL150 S0808 E11250 - S0801 E11248 - S0743 E11319 - S0801 E11331 - S0822 E11319 MOV E 10KTFCST VA CLD +6 HR: 23/0330Z SFC/FL150 S0808 E11251 - S0801 E11249 - S0744 E11320 - S0801 E11331 - S0821 E11319FCST VA CLD +12 HR: 23/0930Z SFC/FL150 S0808 E11249 - S0801 E11248 - S0748 E11320 - S0802 E11330 - S0822 E11321FCST VA CLD +18 HR: 23/1530Z SFC/FL150 S0808 E11249 - S0801 E11248 - S0744 E11318 - S0802 E11330 - S0822 E11319RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY. VA EMISSION IS EXPECTED TO BE ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260923/0350Z=