Ibu Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Oct 4, 03:40 UTC

Satellite image of Ibu volcano on 4 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070.
Original VAAC bulletin:

FVAU03 at 03:59 UTC, 04/10/26 from ADRM
VA ADVISORY
DTG: 20261004/0400Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1125
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 MOV E
OBS VA DTG: 04/0340Z
OBS VA CLD: SFC/FL070 N0126 E12737 - N0132 E12735 - N0151
 E12814 - N0133 E12823 - N0119 E12818 MOV E 10KT
FCST VA CLD +6 HR: 04/0940Z SFC/FL070 N0126 E12737 - N0132
 E12736 - N0152 E12816 - N0136 E12823 - N0117 E12819
FCST VA CLD +12 HR: 04/1540Z SFC/FL070 N0126 E12737 - N0132
 E12736 - N0151 E12816 - N0135 E12823 - N0119 E12818
FCST VA CLD +18 HR: 04/2140Z SFC/FL070 N0131 E12736 - N0151
 E12816 - N0135 E12823 - N0119 E12818 - N0126 E12737
RMK: NTERMITTENT ERUPTIONS IDENTIFIABLE ON SATELLITE
 IMAGERY. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY,
 GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261004/1000Z=