Satellite image of Semeru volcano on 17 Aug 2026
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 NW direction.
Original VAAC bulletin:
FVAU02 at 04:53 UTC, 17/08/26 from ADRM
VA ADVISORY
DTG: 20260817/0450Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/936
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA TO FL150 OBS FROM GROUND 16/2209Z
EST VA DTG: 17/0430Z
EST VA CLD: SFC/FL150 S0816 E11253 - S0806 E11223 - S0735
E11236 - S0742 E11311 - S0812 E11308 MOV NW 05KT
FCST VA CLD +6 HR: 17/1030Z SFC/FL150 S0815 E11259 - S0804
E11226 - S0738 E11235 - S0735 E11300 - S0753 E11317
FCST VA CLD +12 HR: 17/1630Z SFC/FL150 S0815 E11301 - S0806
E11228 - S0739 E11236 - S0739 E11308 - S0800 E11324
FCST VA CLD +18 HR: 17/2230Z SFC/FL150 S0816 E11254 - S0801
E11230 - S0735 E11243 - S0739 E11309 - S0757 E11321
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. RECENT GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS
ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON PAST SATELLITE
IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260817/1050Z=