Krakatau Volcanic Ash Advisory: ash plume to 9,000 ft (2,700 m) as of Aug 23, 01:00 UTC

Satellite image of Krakatau volcano on 23 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 9000 ft (2700 m), or flight level 090.
Original VAAC bulletin:

FVAU05 at 01:18 UTC, 23/08/26 from ADRM
VA ADVISORY
DTG: 20260823/0127Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/127
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: VA TO FL090 OBS AT 23/0100Z, MOV SW
OBS VA DTG: 23/0100Z
OBS VA CLD: SFC/FL090 S0610 E10535 - S0704 E10447 - S0601
 E10411 - S0553 E10525 MOV SW 05KT
FCST VA CLD +6 HR: 23/0700Z SFC/FL090 S0610 E10535 - S0745
 E10530 - S0759 E10438 - S0643 E10320 - S0542 E10356 - S0554
 E10526
FCST VA CLD +12 HR: 23/1300Z SFC/FL090 S0611 E10535 - S0758
 E10449 - S0644 E10318 - S0546 E10320 - S0457 E10406 - S0551
 E10530
FCST VA CLD +18 HR: 23/1900Z SFC/FL090 S0609 E10538 - S0747
 E10507 - S0758 E10406 - S0635 E10257 - S0528 E10310 - S0459
 E10410 - S0551 E10527
RMK: CONTINUOUS VA ERUPTION IDENTIFIABLE ON CURRENT
 SATELLITE IMAGERY. HEIGHT AND MOVEMENT BASED ON HIMAWARI-9
 SATELLITE IMAGERY AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260823/0727Z=