Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Aug 28, 15:40 UTC

Satellite image of Semeru volcano on 28 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 SE direction.
Original VAAC bulletin:

FVAU02 at 15:55 UTC, 28/08/26 from ADRM
VA ADVISORY
DTG: 20260828/1600Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/983
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA ERUPTION TO FL150 OBS AT 28/1540Z
OBS VA DTG: 28/1540Z
OBS VA CLD: SFC/FL150 S0803 E11255 - S0818 E11317 - S0831
 E11317 - S0830 E11254 - S0806 E11252 MOV SE 05KT
FCST VA CLD +6 HR: 28/2140Z SFC/FL150 S0802 E11250 - S0801
 E11306 - S0833 E11319 - S0849 E11302 - S0845 E11242
FCST VA CLD +12 HR: 29/0340Z SFC/FL150 S0805 E11251 - S0801
 E11313 - S0833 E11321 - S0849 E11308 - S0846 E11250
FCST VA CLD +18 HR: 29/0940Z SFC/FL150 S0803 E11253 - S0801
 E11315 - S0825 E11323 - S0846 E11304 - S0835 E11248 - S0806
 E11250
RMK: VA EMISSIONS IDENTIFIABLE ON RECENT SATELLITE IMAGERY
 MOVING SE. GROUND REPORTS INDICATE ONGOING ERUPTIONS. VA
 HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND
 REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260828/2200Z=