Krakatau Volcanic Ash Advisory: ash plume to 9,000 ft (2,700 m) as of Oct 20, 00:00 UTC

Satellite image of Krakatau volcano on 20 Oct 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:

FVAU04 at 00:03 UTC, 20/10/26 from ADRM
VA ADVISORY
DTG: 20261020/0020Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/238
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL090 MOV SW AT 20/0000Z
OBS VA DTG: 20/0000Z
OBS VA CLD: SFC/FL090 S0606 E10530 - S0612 E10525 - S0618
 E10509 - S0603 E10505 - S0559 E10515 - S0602 E10528 MOV SW
 10KT
FCST VA CLD +6 HR: 20/0600Z SFC/FL090 S0606 E10531 - S0613
 E10527 - S0621 E10505 - S0607 E10501 - S0553 E10508 - S0601
 E10530
FCST VA CLD +12 HR: 20/1200Z NO VA EXP
FCST VA CLD +18 HR: 20/1800Z NO VA EXP
RMK: VONA RECEIVED INDICATING ERUPTION ONGOING. VA CLEARLY
 DISCERNIBLE ON LATEST SAT IMG. VA HEIGHT AND FORECAST BASED
 ON LATEST SAT IMG, GROUND REPORT AND MODEL GUIDANCE.VA
 EXPECTED TO DISSIPATE WITHIN 6-12 HOURS.
NXT ADVISORY: NO LATER THAN 20261020/0620Z=