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, and moving at 05 kts in NE direction.
Original VAAC bulletin:
FVAU02 at 22:42 UTC, 18/08/26 from ADRM
VA ADVISORY
DTG: 20260818/2250Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/943
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 REP AT 18/00650Z
EST VA DTG: 18/2230Z
EST VA CLD: SFC/FL150 S0808 E11253 - S0744 E11253 - S0745
E11306 - S0754 E11313 - S0808 E11256 MOV NE 05KT
FCST VA CLD +6 HR: 19/0430Z SFC/FL150 S0808 E11253 - S0746
E11246 - S0743 E11258 - S0749 E11309 - S0809 E11257
FCST VA CLD +12 HR: 19/1030Z SFC/FL150 S0808 E11253 - S0746
E11246 - S0743 E11258 - S0749 E11309 - S0809 E11257
FCST VA CLD +18 HR: 19/1630Z SFC/FL150 S0808 E11253 - S0746
E11246 - S0743 E11258 - S0749 E11309 - S0808 E11257
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 20260819/0450Z=