A ground report indicated volcanic ash up to FL070 moving west as of 30 August 2026, 10:30 UTC. Forecasts suggest ash is expected to dissipate within 6 to 12 hours.
Original VAAC bulletin:
FVAU04 at 11:04 UTC, 30/08/26 from ADRM
VA ADVISORY
DTG: 20260830/1050Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/172
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: GROUND REPORT OF VA TO FL070 MOV WEST
EST VA DTG: 30/1030Z
EST VA CLD: SFC/FL070 S0815 E12332 - S0818 E12332 - S0824
E12301 - S0808 E12301 MOV W 10KT
FCST VA CLD +6 HR: 30/1630Z SFC/FL070 S0814 E12332 - S0818
E12332 - S0825 E12257 - S0806 E12256
FCST VA CLD +12 HR: 30/2230Z NO VA EXP
FCST VA CLD +18 HR: 31/0430Z NO VA EXP
RMK: GROUND REPORT OF ERUPTION AT 30/0844Z WITH VA TO 1920FT
ABOVE SUMMIT MOVING WEST. CONTINUOUS VA EMISSION
IDENTIFIABLE ON EARLIER SATELLITE IMAGERY MOVING WEST, NOW
NOT DISCERNIBLE DUE TO MET CLOUD AND DARKNESS. VA EXPECTED
TO DISSIPATE WITHIN 6 - 12 HOURS.
NXT ADVISORY: NO LATER THAN 20260830/1650Z=