Krakatau Volcanic Ash Advisory: ash plume to 4,000 ft (1,200 m) as of Aug 12, 23:40 UTC

Satellite image of Krakatau volcano on 12 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 4000 ft (1200 m), or flight level 040, and moving at 05 kts in NW direction.

Original VAAC bulletin:

FVAU06 at 23:54 UTC, 12/08/26 from ADRM
VA ADVISORY
DTG: 20260813/0000Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/97
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: VA PLUME OBS AT 12/2340Z EXTD NW
OBS VA DTG: 12/2340Z
OBS VA CLD: SFC/FL040 S0612 E10530 - S0629 E10439 - S0600
E10415 - S0535 E10443 - S0600 E10533 MOV NW 05KT
FCST VA CLD +6 HR: 13/0540Z SFC/FL040 S0609 E10531 - S0632
E10424 - S0559 E10401 - S0538 E10430 - S0601 E10530
FCST VA CLD +12 HR: 13/1140Z SFC/FL040 S0605 E10533 - S0614
E10528 - S0616 E10448 - S0556 E10435 - S0533 E10452 - S0535
E10526
FCST VA CLD +18 HR: 13/1740Z SFC/FL040 S0614 E10527 - S0608
E10441 - S0535 E10437 - S0528 E10524 - S0604 E10534
RMK: CONTINUOUS VA EMISSION IDENTIFIABLE ON CURRENT
SATELLITE IMAGE. EMISSIONS ARE EXPECTED TO BE ONGOING.
HEIGHT AND FORECAST BASED ON SATELLITE IMAGERY AND MODEL
GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260813/0600Z=

Lewotobi Volcanic Ash Advisory: ash plume to 9,000 ft (2,700 m) as of Aug 12, 19:10 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 15 kts in SE direction.

Original VAAC bulletin:

FVAU04 at 19:10 UTC, 12/08/26 from ADRM
VA ADVISORY
DTG: 20260812/1910Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/370
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL090 LAST REPORTED AT 12/1824Z MOV
SSE
EST VA DTG: 12/1850Z
EST VA CLD: SFC/FL090 S0825 E12249 - S0902 E12332 - S0928
E12318 - S0918 E12237 - S0827 E12239 MOV SE 15KT
FCST VA CLD +6 HR: 13/0050Z SFC/FL090 S0824 E12249 - S0857
E12320 - S0919 E12308 - S0912 E12237 - S0827 E12238
FCST VA CLD +12 HR: 13/0650Z SFC/FL090 S0828 E12240 - S0826
E12250 - S0852 E12310 - S0908 E12256 - S0857 E12238
FCST VA CLD +18 HR: 13/1250Z SFC/FL090 S0826 E12250 - S0851
E12310 - S0908 E12258 - S0856 E12237 - S0827 E12238
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGE DUE TO
DARKNESS AND MET CLOUD. GROUND REPORTS INDICATE ERUPTIONS
ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON PAST SATELLITE
IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260813/0110Z=

Puracé Volcanic Ash Advisory: ash plume to 18,000 ft (5,500 m) as of Aug 12, 15:10 UTC

Mild explosive activity continues intermittently. The Volcanic Ash Advisory Center (VAAC) Washington reported sporadic emissions of volcanic ash.

Original VAAC bulletin:

FVXX23 at 15:43 UTC, 12/08/26 from KNES
VA ADVISORY
DTG: 20260812/1541Z

VAAC: WASHINGTON

VOLCANO: PURACE 351060
PSN: N0219 W07624

AREA: COLOMBIA

SOURCE ELEV: 15256 FT AMSL

ADVISORY NR: 2026/388

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: INTMT VA EMS

OBS VA DTG: 12/1510Z

OBS VA CLD: SFC/FL180 N0226 W07634 - N0219 W07623
- N0219 W07624 - N0224 W07635 - N0226 W07634 MOV
NW 15KT

FCST VA CLD +6HR: 12/2100Z SFC/FL180 N0226 W07636
- N0219 W07623 - N0219 W07624 - N0223 W07638 -
N0226 W07636

FCST VA CLD +12HR: 13/0300Z SFC/FL180 N0225
W07637 - N0219 W07623 - N0219 W07623 - N0222
W07638 - N0225 W07637

FCST VA CLD +18HR: 13/0900Z SFC/FL180 N0225
W07637 - N0219 W07623 - N0219 W07624 - N0222
W07638 - N0225 W07637

RMK: VA EMS OBS IN STLT IMG EXT APRX 15NM WNW FM
SUMMIT. WNW MVMT EXP THRU T+18. FCST BASED ON
STLT AND MDL WINDS. ...GATLING

NXT ADVISORY: WILL BE ISSUED BY 20260812/2145Z

Aoba Volcanic Ash Advisory: ash plume to 9,000 ft (2,700 m) as of Aug 12, 11:56 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 9000 ft (2700 m), or flight level 090, and moving at 10 kts in SW direction.

Original VAAC bulletin:

FVPS01 at 11:56 UTC, 12/08/26 from NZKL
VA ADVISORY
DTG: 20260812/1156Z
VAAC: WELLINGTON
VOLCANO: AMBAE 257030
PSN: S1523 E16750
AREA: VANUATU
SOURCE ELEV: 1496M AMSL
ADVISORY NR: 2026/296
INFO SOURCE: HMIAWARI SATELLITE
ERUPTION DETAILS: ERUPTION AT 20260812/1100Z LOW LEVEL
ERUPTION
OBS VA DTG: 12/1156Z
OBS VA CLD: SFC/FL090 S1525 E16757 - S1547 E16729 - S1523
E16719 - S1516 E16753 MOV SW 10KT
FCST VA CLD +6 HR: 12/1756Z NOT AVBL
FCST VA CLD +12 HR: 12/2356Z NOT AVBL
FCST VA CLD +18 HR: 13/0556Z NOT AVBL
RMK: MORE INFORMATION TO FOLLOW SHORTLY
NXT ADVISORY: NO LATER THAN 20260812/1756Z=

Reventador Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Aug 12, 05:40 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.

Original VAAC bulletin:

FVXX22 at 06:26 UTC, 12/08/26 from KNES
VA ADVISORY
DTG: 20260812/0624Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0004 W07739

AREA: ECUADOR

SOURCE ELEV: 11686 FT AMSL

ADVISORY NR: 2026/812

INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.

ERUPTION DETAILS: VA EMS OBS

OBS VA DTG: 12/0540Z

OBS VA CLD: SFC/FL150 S0000 W07755 - S0004 W07738
- S0006 W07739 - S0003 W07755 - S0000 W07755 MOV
NW 15KT

FCST VA CLD +6HR: 12/1130Z SFC/FL150 N0001 W07801
- S0004 W07738 - S0006 W07738 - S0004 W07802 -
N0001 W07801

FCST VA CLD +12HR: 12/1730Z SFC/FL150 N0004
W07757 - S0004 W07739 - S0006 W07739 - S0001
W07759 - N0004 W07757

FCST VA CLD +18HR: 12/2330Z SFC/FL150 N0000
W07757 - S0004 W07738 - S0006 W07739 - S0003
W07758 - N0000 W07757

RMK: VA EMS OBS IN STLT IMG UP TO APPRX 15NM FM
SUMMIT. VOL INCANDESCENCE SEEN IN WEBCAM. NWP MDL
GUIDANCE FCSTS GEN WNW MOVMT THRU T+18.
...MONAGHAN

NXT ADVISORY: WILL BE ISSUED BY 20260812/1230Z