Satellite image of Semeru volcano on 4 Apr 2026Explosive 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 18:46 UTC, 04/04/26 from ADRMVA ADVISORYDTG: 20260404/1840ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2026/386INFO SOURCE: HIMAWARI-9, CVGHMERUPTION DETAILS: VA TO FL150 OBS ON SAT MOV SW 04/1820ZEST VA DTG: 04/1820ZEST VA CLD: SFC/FL150 S0804 E11255 - S0808 E11259 - S0824 E11255 - S0834 E11234 - S0825 E11219 - S0808 E11221 MOV SW 05KTFCST VA CLD +6 HR: 05/0020Z SFC/FL150 S0803 E11257 - S0808 E11259 - S0831 E11235 - S0823 E11221 - S0804 E11221FCST VA CLD +12 HR: 05/0620Z SFC/FL150 S0802 E11257 - S0808 E11300 - S0832 E11233 - S0825 E11219 - S0810 E11217 - S0759 E11245FCST VA CLD +18 HR: 05/1220Z SFC/FL150 S0807 E11300 - S0825 E11256 - S0841 E11239 - S0822 E11220 - S0806 E11233 - S0800 E11255RMK: VA IDENTIFIABLE ON RGB SATELLITE IMAGERY MOVING SW OF SUMMIT. GROUND REPORTS INDICATE INTERMITTENT VA EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SAT IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260405/0040Z=