Satellite image of Semeru volcano on 5 Dec 2025Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .The full report is as follows:FVAU02 at 22:06 UTC, 05/12/25 from ADRMVA ADVISORYDTG: 20251205/2200ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2025/1390INFO SOURCE: CVGHM, HIMAWARI-9ERUPTION DETAILS: VA TO FL150 OBS AT 05/2140Z MOV SOBS VA DTG: 05/2140ZOBS VA CLD: SFC/FL150 S0800 E11251 - S0759 E11259 - S0821 E11309 - S0822 E11246 MOV S 05KTFCST VA CLD +6 HR: 06/0340Z SFC/FL150 S0800 E11259 - S0824 E11312 - S0825 E11242 - S0800 E11251FCST VA CLD +12 HR: 06/0940Z SFC/FL150 S0758 E11257 - S0822 E11310 - S0824 E11242 - S0758 E11247FCST VA CLD +18 HR: 06/1540Z SFC/FL150 S0758 E11258 - S0825 E11310 - S0824 E11242 - S0758 E11248RMK: VA OBSERVED ON LATEST SATELLITE IMAGERY. GROUND REPORTS INDICATE DISCRETE VA EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. **CORRECTED FOR RMK TYPO**NXT ADVISORY: NO LATER THAN 20251206/0400Z=