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Lewotobi Volcanic Ash Advisory: ash plume to 9,000 ft (2,700 m) as of Aug 25, 22:50 UTC

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, and moving at 10 kts in W direction.
Original VAAC bulletin:

FVAU04 at 22:50 UTC, 25/08/26 from ADRM
VA ADVISORY
DTG: 20260825/2250Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/424
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL090 LAST REPORTED AT 25/1319Z
EST VA DTG: 25/2230Z
EST VA CLD: SFC/FL090 S0834 E12249 - S0839 E12235 - S0833
 E12230 - S0828 E12236 - S0832 E12249 MOV W 10KT
FCST VA CLD +6 HR: 26/0430Z SFC/FL090 S0836 E12253 - S0848
 E12220 - S0834 E12207 - S0814 E12221 - S0824 E12254
FCST VA CLD +12 HR: 26/1030Z SFC/FL090 S0823 E12251 - S0838
 E12303 - S0852 E12248 - S0847 E12205 - S0823 E12204 - S0813
 E12224
FCST VA CLD +18 HR: 26/1630Z SFC/FL090 S0823 E12257 - S0844
 E12302 - S0849 E12220 - S0835 E12206 - S0815 E12221
RMK: VA NOT CURRENTLY IDENTIFIABLE ON SATELLITE IMAGERY,
 HOWEVER INTERMITTENT ERUPTIONS EXPECTED TO BE ONGOING. VA
 HEIGHT BASED ON GROUND REPORT AND MOVEMENT BASED ON
 CONSENSUS MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260826/0450Z=
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Krakatau Volcanic Ash Advisory: ash plume to 6,000 ft (1,800 m) as of Aug 25, 18:20 UTC

Satellite image of Krakatau volcano on 25 Aug 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:

FVAU05 at 18:26 UTC, 25/08/26 from ADRM
VA ADVISORY
DTG: 20260825/1840Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/139
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: VA TO FL060 MOV SW
OBS VA DTG: 25/1820Z
OBS VA CLD: SFC/FL060 S0609 E10532 - S0728 E10422 - S0608
 E10341 - S0558 E10526 MOV SW 05KT
FCST VA CLD +6 HR: 26/0020Z SFC/FL060 S0606 E10535 - S0700
 E10517 - S0742 E10426 - S0644 E10324 - S0532 E10349 - S0555
 E10528
FCST VA CLD +12 HR: 26/0620Z SFC/FL060 S0610 E10535 - S0656
 E10527 - S0732 E10412 - S0629 E10319 - S0510 E10359 - S0544
 E10525
FCST VA CLD +18 HR: 26/1220Z SFC/FL060 S0610 E10534 - S0657
 E10516 - S0716 E10353 - S0602 E10317 - S0504 E10418 - S0548
 E10529
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 20260826/0040Z=
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Ibu Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Aug 25, 13:20 UTC

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 10 kts in N direction.
Original VAAC bulletin:

FVAU03 at 13:26 UTC, 25/08/26 from ADRM
VA ADVISORY
DTG: 20260825/1340Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/963
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 OBS AT 25/1320Z
OBS VA DTG: 25/1320Z
OBS VA CLD: SFC/FL070 N0126 E12740 - N0127 E12735 - N0146
 E12730 - N0155 E12744 - N0142 E12752 MOV N 10KT
FCST VA CLD +6 HR: 25/1920Z SFC/FL070 N0127 E12741 - N0127
 E12734 - N0146 E12728 - N0156 E12740 - N0148 E12751
FCST VA CLD +12 HR: 26/0120Z SFC/FL070 N0126 E12740 - N0127
 E12734 - N0153 E12732 - N0200 E12748 - N0149 E12756
FCST VA CLD +18 HR: 26/0720Z SFC/FL070 N0126 E12740 - N0127
 E12734 - N0154 E12732 - N0201 E12748 - N0149 E12757
RMK: VA ERUPTION OBS ON LATEST SATELLITE IMAGERY. VA HEIGHT
 AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND
 MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260825/1940Z=