Ibu Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Sep 6, 13:44 UTC

Satellite image of Ibu volcano on 6 Sep 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, and moving at 05 kts in NW direction.
Original VAAC bulletin:

FVAU03 at 13:44 UTC, 06/09/26 from ADRM
VA ADVISORY
DTG: 20260906/1345Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1012
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 LAST REPORTED AT 06/0959Z
EST VA DTG: 06/1320Z
EST VA CLD: SFC/FL070 N0125 E12736 - N0140 E12718 - N0153
E12729 - N0149 E12747 - N0127 E12743 MOV NW 05KT
FCST VA CLD +6 HR: 06/1920Z SFC/FL070 N0125 E12736 - N0144
E12721 - N0152 E12732 - N0149 E12747 - N0126 E12742
FCST VA CLD +12 HR: 07/0120Z SFC/FL070 N0125 E12736 - N0143
E12721 - N0152 E12732 - N0149 E12747 - N0126 E12742
FCST VA CLD +18 HR: 07/0720Z SFC/FL070 N0125 E12736 - N0143
E12721 - N0152 E12732 - N0149 E12747 - N0126 E12743
RMK: VA UNIDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
MET CLOUD. RECENT GROUND REPORTS INDICATE REGULAR DISCRETE
VA EMISSIONS. VA HEIGHT AND FORECAST BASED ON LAST SATELLITE
OBS, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260906/1945Z=

Krakatau Volcanic Ash Advisory: ash plume to 50,000 ft (15,200 m) as of Sep 6, 06:10 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 50000 ft (15200 m), or flight level 500.
Original VAAC bulletin:

FVAU04 at 06:35 UTC, 06/09/26 from ADRM
VA ADVISORY
DTG: 20260906/0630Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/185
INFO SOURCE: HIMAWARI-9 CVGHM
ERUPTION DETAILS: VA TO FL500 MOV SW, VA TO FL120 MOV W
OBS VA DTG: 06/0610Z
OBS VA CLD: SFC/FL120 S0448 E10801 - S0642 E11009 - S1053
E10644 - S0951 E09934 - S0301 E09728 MOV W 05KT SFC/FL500
S1051 E09952 - S1805 E09655 - S1309 E08138 - S0314 E08837 -
S0303 E09732 MOV SW 10KT
FCST VA CLD +6 HR: 06/1210Z SFC/FL120 S0446 E10758 - S0633
E10915 - S1141 E10600 - S1006 E09849 - S0317 E09718
SFC/FL500 S1033 E09853 - S2135 E09613 - S1612 E07822 - S1138
E07907 - S0149 E08639 - S0149 E09653
FCST VA CLD +12 HR: 06/1810Z SFC/FL120 S0425 E10550 - S0615
E10921 - S1003 E10639 - S1017 E09956 - S0409 E09525
SFC/FL500 S1036 E10018 - S2128 E09727 - S1827 E07808 - S1302
E07817 - S0443 E08331 - S0440 E09539
FCST VA CLD +18 HR: 07/0010Z SFC/FL120 S0449 E10755 - S0611
E10921 - S1008 E10634 - S1001 E09920 - S0308 E09534
SFC/FL500 S0709 E09757 - S1946 E09348 - S1634 E07801 - S1058
E07806 - S0631 E08053
RMK: HIGH LEVEL VA TO FL500 IS NOW DETATCHED FROM THE
VOLCANO AND MOVING SW. CONTINUOUS VA EMISSION TO FL120 MOV
W, WITH REMNANTS OF VA FROM EARLIER ERUPTION DRIFTING E. VA
HEIGHT AND FORECAST BASED ON SATELLITE IMAGERY AND MODEL
GIUIDANCE.
NXT ADVISORY: NO LATER THAN 20260906/0930Z=

Lewotolo Volcanic Ash Advisory: ash plume to 6,000 ft (1,800 m) as of Sep 6, 01:10 UTC

Satellite image of Lewotolo volcano on 6 Sep 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060.
Original VAAC bulletin:

FVAU06 at 01:28 UTC, 06/09/26 from ADRM
VA ADVISORY
DTG: 20260906/0130Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/198
INFO SOURCE: HIMAWARI-9 CVGHM
ERUPTION DETAILS: VA TO FL060 OBS AT 06/0110Z
OBS VA DTG: 06/0110Z
OBS VA CLD: SFC/FL060 S0814 E12334 - S0831 E12342 - S0837
E12324 - S0828 E12308 - S0812 E12307 - S0811 E12331 MOV S
05KT
FCST VA CLD +6 HR: 06/0710Z SFC/FL060 S0812 E12332 - S0814
E12335 - S0832 E12341 - S0836 E12324 - S0828 E12311 - S0813
E12312
FCST VA CLD +12 HR: 06/1310Z SFC/FL060 S0813 E12334 - S0819
E12336 - S0837 E12319 - S0834 E12308 - S0809 E12304
FCST VA CLD +18 HR: 06/1910Z SFC/FL060 S0817 E12336 - S0837
E12319 - S0833 E12306 - S0809 E12304 - S0812 E12335
RMK: VA IDENTIFIABLE ON RECENT SATELLITE IMAGERY. VA HEIGHT
AND MOV BASED ON HIMAWARI-9 SAT AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260906/0730Z=

Volcanic activity worldwide 5 Sep 2026: Etna volcano, Fuego, Krakatau, Semeru, Ibu, Reventador, Sina…

Map of today's active volcanoes

Map of today's active volcanoes

Etna (Sicily, Italy): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Toulouse warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150, and moving at 10 kts in S direction.
Original VAAC bulletin: ash plume to 15,000 ft (4,600 m) as of Sep 5, 10:00 UTC

Ibu (Halmahera, Indonesia): A ground report indicated a volcanic ash eruption at Ibu at 08:13 UTC on September 5. As of 09:40 UTC, ash emissions were estimated and moving northwest, but ash was not identifiable on satellite imagery due to meteorological clouds.
Original VAAC bulletin: Ibu Volcanic Ash Advisory

Sinabung (Sumatra, Indonesia): (5 Sep) A volcanic ash advisory was issued for Sinabung. Ash was previously observed up to FL140 moving east at 04:30 UTC on September 5, 2026, but recent satellite data does not identify any ash cloud and the advisory has been terminated.
Original VAAC bulletin: Sinabung Volcanic Ash Advisory

Lewotolo (Lesser Sunda Islands): (5 Sep) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060.
Original VAAC bulletin: ash plume to 6,000 ft (1,800 m) as of Sep 5, 07:30 UTC

Krakatau (Sunda Strait, Indonesia): The recent strong paroxysm episode at the volcano was also captured from space.

The Sentinel-2 satellite detected the tall ash plume and large amounts of floating pumice stones.
…5 Sep:
A major eruptive episode has occurred (or is still occurring) at the volcano. Local residents from nearby coastal areas reported powerful explosions and tall lava fountains, eruption lightning visible from afar and a dense column of ash. This paroxysm likely marks the strongest activity since the eruption that led to the collapse of the previous cone of Anak Krakatau in Dec 2018.
The VAAC center in Darwin estimates an ash plume height of 50,000 ft (15 km).
… [read more]

Semeru (East Java, Indonesia): (5 Sep) 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.
Original VAAC bulletin: ash plume to 15,000 ft (4,600 m) as of Sep 4, 23:40 UTC

Aoba (Vanuatu): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070, and moving at 10 kts in SE direction.
Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Sep 5, 20:43 UTC

Fuego (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 16000 ft (4900 m), or flight level 160, and moving at 10 kts in W direction.
Original VAAC bulletin: ash plume to 16,000 ft (4,900 m) as of Sep 5, 20:00 UTC

Puracé (Colombia): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin.
Original VAAC bulletin: VA EM LKLY

Reventador (Ecuador): A possible light volcanic ash emission from Reventador is indicated, but no ash plume was observed due to cloud cover as of 5 September 2026, 10:50 UTC. Forecasts suggest west-northwest movement of any ash cloud through the next 12 hours.
Original VAAC bulletin: Reventador Volcanic Ash Advisory

Krakatau Volcanic Ash Advisory: ash plume to 50,000 ft (15,200 m) as of Sep 5, 16:10 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 50000 ft (15200 m), or flight level 500.
Original VAAC bulletin:

FVAU04 at 16:25 UTC, 05/09/26 from ADRM
VA ADVISORY
DTG: 20260905/1630Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/179
INFO SOURCE: HIMAWARI-9 CVGHM
ERUPTION DETAILS: VA TO FL500 MOV W, VA TO FL200 MOV S TO SE
OBS VA DTG: 05/1610Z
OBS VA CLD: SFC/FL200 S0519 E10710 - S0639 E10930 - S0902
E10829 - S0933 E10514 - S0738 E10138 MOV SE 10KT SFC/FL500
S0711 E10611 - S1007 E09930 - S1547 E09446 - S1128 E08348 -
S0311 E09128 - S0142 E10116 - S0517 E10715 MOV W 30KT
FCST VA CLD +6 HR: 05/2210Z SFC/FL200 S0504 E10702 - S0655
E11008 - S0907 E10859 - S0959 E10507 - S0726 E10141
SFC/FL500 S0659 E10614 - S1029 E09932 - S1727 E09513 - S1210
E08104 - S0252 E09040 - S0003 E09932 - S0504 E10704
FCST VA CLD +12 HR: 06/0410Z SFC/FL200 S0501 E10710 - S0653
E11017 - S0903 E10913 - S1001 E10515 - S0727 E10147
SFC/FL500 S0654 E10626 - S1016 E09957 - S1856 E09505 - S1244
E07912 - S0305 E08923 - N0010 E09945 - S0506 E10708
FCST VA CLD +18 HR: 06/1010Z SFC/FL200 S0504 E10700 - S0641
E11009 - S0904 E10916 - S0959 E10501 - S0722 E10152
SFC/FL500 S0652 E10628 - S1026 E10000 - S1955 E09456 - S1314
E07817 - S0309 E08858 - N0028 E09940 - S0500 E10658
RMK: CONTINUOUS VA TO FL500 IDENTIFIABLE ON SAT IMAGE MOV W.
CONTINUOUS VA TO FL200 MOV S TO SE. HEIGHT AND MOV BASED ON
SATELLITE IMAGERY AND FCST BASED ON DISPERSION MODELS.
NXT ADVISORY: NO LATER THAN 20260905/1830Z=