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Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 25000 ft (7600 m), or flight level 250.
Original VAAC bulletin:

FVXX25 at 15:23 UTC, 17/10/26 from KNES
VA ADVISORY
DTG: 20261017/1520Z

VAAC: WASHINGTON

VOLCANO: KILAUEA 332010
PSN: N1925 W15517

AREA: HAWAIIAN.IS

SOURCE ELEV: 4009 FT AMSL

ADVISORY NR: 2026/047

INFO SOURCE: GOES-18. VONA. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: ONGOING VA EMS

OBS VA DTG: 17/1501Z

OBS VA CLD: SFC/FL250 N1925 W15517 - N1925 W15517
- N1904 W15526 - N1914 W15537 - N1925 W15517 MOV
WSW 20KT 

FCST VA CLD +6HR: 17/2100Z SFC/FL250 N1925 W15517
- N1924 W15516 - N1905 W15538 - N1920 W15546 -
N1925 W15517 

FCST VA CLD +12HR: 18/0300Z SFC/FL250 N1932
W15546 - N1925 W15516 - N1924 W15516 - N1914
W15544 - N1932 W15546 

FCST VA CLD +18HR: 18/0900Z SFC/FL250 N1940
W15541 - N1925 W15517 - N1924 W15516 - N1923
W15546 - N1940 W15541 

RMK: ONGOING VA EMS OBSD ON STLT IMG EXT APPRX
25NMI SW FM SUMMIT. NWP MDLS FCST WSW MVMT THRU
T+18. ...BUTLER

NXT ADVISORY: WILL BE ISSUED BY 20261017/2115Z

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140.
Original VAAC bulletin:

FVXX22 at 12:27 UTC, 17/10/26 from KNES
VA ADVISORY
DTG: 20261017/1225Z

VAAC: WASHINGTON

VOLCANO: SANTA MARIA 342030
PSN: N1445 W09133

AREA: GUATEMALA

SOURCE ELEV: 12287 FT AMSL

ADVISORY NR: 2026/607

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

ERUPTION DETAILS: OCNL VA EMS

OBS VA DTG: 17/1150Z

OBS VA CLD: SFC/FL140 N1445 W09133 - N1445 W09132
- N1431 W09134 - N1433 W09140 - N1445 W09133 MOV
SW 10KT 

FCST VA CLD +6HR: 17/1800Z SFC/FL140 N1445 W09133
- N1445 W09132 - N1427 W09134 - N1429 W09143 -
N1445 W09133 

FCST VA CLD +12HR: 18/0000Z SFC/FL140 N1446
W09133 - N1445 W09132 - N1428 W09139 - N1431
W09146 - N1446 W09133 

FCST VA CLD +18HR: 18/0600Z SFC/FL140 N1445
W09132 - N1445 W09132 - N1430 W09138 - N1434
W09144 - N1445 W09132 

RMK: VA EMS OBSD ON STLT IMG MOVG SW EXT APPRX
15NMI FM SUMMIT. NWP MDLS FCST GEN WSW MVMT THRU
T+18. ...BUTLER

NXT ADVISORY: WILL BE ISSUED BY 20261017/1830Z

Satellite image of Ibu volcano on 17 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, and moving at 05 kts in NW direction.
Original VAAC bulletin:

FVAU03 at 06:56 UTC, 17/10/26 from ADRM
VA ADVISORY
DTG: 20261017/0700Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1178
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 REPORTED AT 17/0541Z
EST VA DTG: 17/0640Z
EST VA CLD: SFC/FL070 N0126 E12739 - N0131 E12717 - N0149
 E12718 - N0150 E12735 - N0130 E12742 MOV NW 05KT
FCST VA CLD +6 HR: 17/1240Z SFC/FL070 N0126 E12736 - N0139
 E12717 - N0159 E12728 - N0150 E12749 - N0127 E12742
FCST VA CLD +12 HR: 17/1840Z SFC/FL070 N0126 E12737 - N0137
 E12717 - N0156 E12724 - N0151 E12746 - N0129 E12743
FCST VA CLD +18 HR: 18/0040Z SFC/FL070 N0127 E12735 - N0149
 E12726 - N0159 E12739 - N0149 E12751 - N0127 E12742
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY DUE TO
 MET CLOUD, HOWEVER GROUND REPORTS INDICATE INTERMITTENT
 ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON
 SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261017/1300Z=

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:

FVAU02 at 03:45 UTC, 17/10/26 from ADRM
VA ADVISORY
DTG: 20261017/0350Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1187
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 17/0250Z MOV W
EST VA DTG: 17/0330Z
EST VA CLD: SFC/FL150 S0803 E11258 - S0808 E11259 - S0814
 E11245 - S0804 E11242 MOV W 15KT
FCST VA CLD +6 HR: 17/0930Z SFC/FL150 S0810 E11259 - S0831
 E11208 - S0753 E11204 - S0801 E11258
FCST VA CLD +12 HR: 17/1530Z SFC/FL150 S0809 E11258 - S0827
 E11206 - S0749 E11206 - S0802 E11258
FCST VA CLD +18 HR: 17/2130Z SFC/FL150 S0803 E11258 - S0810
 E11258 - S0827 E11208 - S0751 E11205
RMK: DISCRETE VA EMISSIONS IDENTIFIABLE ON RECENT SATELLITE
 IMAGERY. REGULAR GROUND REPORTS ALSO INDICATE INTERMITTENT
 ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON
 SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261017/0950Z=