Satellite image of Semeru volcano on 4 May 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 10:48 UTC, 04/05/26 from ADRMVA ADVISORYDTG: 20260504/1050ZVAAC: DARWINVOLCANO: SEMERU 263300PSN: S0806 E11255AREA: INDONESIASOURCE ELEV: 3657M AMSLADVISORY NR: 2026/507INFO SOURCE: CVGHM, HIMAWARI-9, WEBCAMERUPTION DETAILS: VA TO FL150 OBS AT 04/1030Z MOV WNWOBS VA DTG: 04/1030ZOBS VA CLD: SFC/FL150 S0802 E11259 - S0812 E11258 - S0808 E11228 - S0752 E11233 MOV W 10KTFCST VA CLD +6 HR: 04/1630Z SFC/FL150 S0802 E11259 - S0812 E11258 - S0818 E11204 - S0744 E11208FCST VA CLD +12 HR: 04/2230Z SFC/FL150 S0802 E11259 - S0812 E11258 - S0817 E11204 - S0740 E11210FCST VA CLD +18 HR: 05/0430Z SFC/FL150 S0802 E11259 - S0812 E11258 - S0818 E11203 - S0732 E11214RMK: DISCRTE VA EMISSIONS IDENTIFIABLE ON SATELLITE AND WEBCAM IMAGERY. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.NXT ADVISORY: NO LATER THAN 20260504/1650Z=