A volcanic ash emission was reported at Ibu on 14 September at 15:46 UTC, with ash estimated to be moving northeast at 15 knots. The ash cloud height could not be identified on satellite imagery due to weather and darkness; estimates are based on ground reports and model guidance.Original VAAC bulletin:FVAU03 at 22:01 UTC, 14/09/26 from ADRMVA ADVISORYDTG: 20260914/2200ZVAAC: DARWINVOLCANO: IBU 268030PSN: N0129 E12738AREA: INDONESIASOURCE ELEV: 1325M AMSLADVISORY NR: 2026/1046INFO SOURCE: HIMAWARI-9, CVGHMERUPTION DETAILS: VA EMISSION REPORTED 14/1546ZEST VA DTG: 14/2140ZEST VA CLD: SFC/FL080 N0127 E12735 - N0132 E12734 - N0155 E12808 - N0139 E12823 - N0124 E12819 MOV NE 15KTFCST VA CLD +6 HR: 15/0340Z SFC/FL080 N0126 E12737 - N0130 E12734 - N0158 E12747 - N0159 E12802 - N0151 E12814 - N0134 E12815FCST VA CLD +12 HR: 15/0940Z SFC/FL080 N0127 E12737 - N0131 E12733 - N0203 E12759 - N0159 E12821 - N0138 E12820FCST VA CLD +18 HR: 15/1540Z SFC/FL080 N0126 E12737 - N0132 E12733 - N0200 E12809 - N0149 E12826 - N0130 E12821RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY DUE TO MET CLOUD AND DARKNESS. GROUND REPORTS INDICATE ONGOING VA ERUPTIONS. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260915/0400Z=