Satellite image of Semeru volcano on 12 Aug 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 04:47 UTC, 12/08/26 from ADRMVA ADVISORYDTG: 20260812/0450ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2026/916INFO SOURCE: HIMAWARI-9, CVGHMERUPTION DETAILS: VA TO FL150 OBS AT 12/0430Z MOV EOBS VA DTG: 12/0430ZOBS VA CLD: SFC/FL150 S0809 E11250 - S0800 E11253 - S0806 E11335 - S0836 E11326 MOV E 05KTFCST VA CLD +6 HR: 12/1030Z SFC/FL150 S0805 E11250 - S0800 E11255 - S0820 E11331 - S0845 E11309FCST VA CLD +12 HR: 12/1630Z SFC/FL150 S0800 E11255 - S0813 E11323 - S0830 E11320 - S0838 E11302 - S0805 E11249FCST VA CLD +18 HR: 12/2230Z SFC/FL150 S0800 E11255 - S0817 E11323 - S0834 E11315 - S0838 E11256 - S0804 E11248RMK: DISCRETE VA IDENTIFIABLE ON CURRENT SAT IMG. GROUND REPORTS INDICATE INTERMITTENT DISCRETE ERUPTIONS ARE ONGOING. VA HEIGHT AND FORECAST BASED ON PAST SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260812/1050Z=