Global-Affair.net

The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin.
Original VAAC bulletin:

FVXX21 at 12:00 UTC, 19/10/26 from KNES
VA ADVISORY
DTG: 20261019/1158Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0005 W07739

AREA: ECUADOR

SOURCE ELEV: 11686 FT AMSL

ADVISORY NR: 2026/1095

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

ERUPTION DETAILS: FRQT VA EMS

EST VA DTG: 19/1120Z

EST VA CLD: SFC/FL140 S0003 W07753 - S0004 W07739
- S0005 W07739 - S0009 W07752 - S0003 W07753 MOV
W 5KT 

FCST VA CLD +6HR: 19/1730Z SFC/FL140 S0001 W07755
- S0004 W07739 - S0005 W07739 - S0007 W07755 -
S0001 W07755 

FCST VA CLD +12HR: 19/2330Z SFC/FL140 S0001
W07755 - S0004 W07739 - S0005 W07739 - S0007
W07755 - S0001 W07755 

FCST VA CLD +18HR: 20/0530Z SFC/FL140 S0001
W07752 - S0004 W07739 - S0005 W07739 - S0007
W07752 - S0001 W07752 

RMK: FRQT VA EMS SEEN ON WEBCAM MOVG WSW. NO VA
EMS OBSD ON STLT IMG. NWP MDLS FCST GEN W MVMT
THRU T+18. FL BASED ON WEBCAM ACTIVITY. ...BUTLER

NXT ADVISORY: WILL BE ISSUED BY 20261019/1745Z

Lava flow periods within the Halemaʻumaʻu summit crater since mid-August (image: Sentinel-2)

The eruptive episode of the volcano from mid-August until 18 October, when the latest powerful, 55th lava fountaining activity took place, is clearly visible from the attached satellite imagery timelapse. The red lava continues to layer the Halemaʻumaʻu summit crater as multiple lava fountains remain active.

Satellite image of Krakatau volcano on 18 Oct 2026

An ash plume from Krakatau was reported reaching 3,000 ft (900 m) at 18/1022Z, with movement towards the northwest. Forecasts indicate possible continued ash presence, but satellite detection is limited due to meteorological clouds.
Original VAAC bulletin:

FVAU04 at 17:26 UTC, 18/10/26 from ADRM
VA ADVISORY
DTG: 20261018/1730Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/233
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL030 REPORTED AT 18/1022Z MOV NW
EST VA DTG: 18/1710Z
EST VA CLD: SFC/FL030 S0610 E10529 - S0620 E10458 - S0553
 E10457 - S0550 E10524 - S0603 E10531 MOV W 05KT
FCST VA CLD +6 HR: 18/2310Z SFC/FL030 S0609 E10529 - S0616
 E10458 - S0552 E10457 - S0551 E10523 - S0604 E10530
FCST VA CLD +12 HR: 19/0510Z SFC/FL030 S0605 E10533 - S0613
 E10529 - S0616 E10456 - S0549 E10457 - S0542 E10525
FCST VA CLD +18 HR: 19/1110Z SFC/FL030 S0604 E10533 - S0615
 E10530 - S0620 E10457 - S0553 E10456 - S0543 E10518
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGE DUE TO
 MET CLOUD. VA HEIGHT AND MOVEMENT BASED ON HIMAWARI-9
 IMAGERY, GROUND REPORT AND MODEL GUIDANCE. LOW CONFIDENCE IN
 FORECAST DUE TO LIGHT AND VARIABLE WINDS.
NXT ADVISORY: NO LATER THAN 20261018/2330Z=