Explosive 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 10:45 UTC, 18/08/26 from ADRM
VA ADVISORY
DTG: 20260818/1050Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/941
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 18/0430Z MOV SE
EST VA DTG: 18/1020Z
EST VA CLD: SFC/FL150 S0804 E11253 - S0750 E11311 - S0801
E11319 - S0817 E11318 - S0809 E11254 MOV E 10KT
FCST VA CLD +6 HR: 18/1620Z SFC/FL150 S0808 E11255 - S0805
E11252 - S0746 E11308 - S0802 E11320 - S0816 E11318
FCST VA CLD +12 HR: 18/2220Z SFC/FL150 S0807 E11253 - S0744
E11257 - S0746 E11312 - S0801 E11319 - S0809 E11255
FCST VA CLD +18 HR: 19/0420Z SFC/FL150 S0809 E11256 - S0808
E11253 - S0745 E11248 - S0743 E11301 - S0751 E11311
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. INTERMITTENT VA EMISSIONS EXPECTED TO BE ONGOING. VA
HEIGHT AND MOV BASED ON SATELLITE IMAGERY, GROUND REPORTS
AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260818/1650Z=