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Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 17500 ft (5300 m) altitude or flight level 175 .
The full report is as follows:

FVXX20 at 18:37 UTC, 16/11/25 from KNES
VA ADVISORY
DTG: 20251116/1835Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0004 W07739

AREA: ECUADOR

SUMMIT ELEV: 11686 FT [3562 M]

ADVISORY NR: 2025/1151

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: VA EM DETECTED

OBS VA DTG: 16/1800Z

OBS VA CLD: SFC/FL175 S0004 W07740 – S0005 W07738
– S0024 W07747 – S0019 W07756 – S0004 W07740 MOV
SW 5KT

FCST VA CLD +6HR: 17/0000Z SFC/FL175 S0004 W07738
– S0021 W07720 – S0026 W07731 – S0005 W07740 –
S0004 W07738

FCST VA CLD +12HR: 17/0600Z SFC/FL175 S0004
W07738 – S0023 W07725 – S0028 W07737 – S0005
W07740 – S0004 W07738

FCST VA CLD +18HR: 17/1200Z SFC/FL175 S0004
W07740 – S0005 W07738 – S0028 W07746 – S0023
W07758 – S0004 W07740

RMK: VA EM SEEN IN STLT IMG MONVG SW AT APX 20
NMI FM SUMMIT. LGT AND VAR WNDS EXP WITH MOVNT TO
SW THRU T+18 HRS. FL BSD ON PST ACT. FCST BSD ON
NWP MDLS. …LINER

NXT ADVISORY: WILL BE ISSUED BY 20251117/0030Z

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows:

FVXX22 at 14:05 UTC, 16/11/25 from KNES
VA ADVISORY
DTG: 20251116/1404Z

VAAC: WASHINGTON

VOLCANO: SANTA MARIA 342030
PSN: N1445 W09133

AREA: GUATEMALA

SUMMIT ELEV: 12287 FT [3745 M]

ADVISORY NR: 2025/760

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: DISCRETE SML VA EM.

OBS VA DTG: 16/1330Z

OBS VA CLD: SFC/FL140 N1446 W09143 – N1446 W09133
– N1444 W09133 – N1443 W09143 – N1446 W09143 MOV
W 10KT

FCST VA CLD +6HR: 16/1930Z SFC/FL140 N1446 W09133
– N1444 W09133 – N1435 W09150 – N1442 W09153 –
N1446 W09133

FCST VA CLD +12HR: 17/0130Z NO VA EXP

FCST VA CLD +18HR: 17/0730Z NO VA EXP

RMK: SML VA CLD OBSD TO ABT 10 NMI W OF SUMMIT.
EM OCCURRED ARND 1250Z. FL ESTD FM NWP MDLS. NWP
MDLS FCST VA TO MOV WSW BY T+6HRS. …HOSLEY

NXT ADVISORY: WILL BE ISSUED BY 20251116/2000Z

Satellite image of Ibu volcano on 16 Nov 2025

Volcanic Ash Advisory Center Darwin (VAAC) issued the following report:

FVAU01 at 02:59 UTC, 16/11/25 from ADRM
VA ADVISORY
DTG: 20251116/0300Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SUMMIT ELEV: 1325M
ADVISORY NR: 2025/1285
INFO SOURCE: CVGHM, HIMAWARI-8
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: ERUPTION REPORTED AT 15/1546Z
EST VA DTG: 16/0230Z
EST VA CLD: SFC/FL060 N0129 E12737 – N0130 E12737 – N0133
E12747 – N0124 E12748 MOV E 10KT
FCST VA CLD +6 HR: 16/0830Z SFC/FL060 N0129 E12737 – N0130
E12737 – N0133 E12747 – N0124 E12748
FCST VA CLD +12 HR: 16/1430Z SFC/FL060 N0129 E12737 – N0130
E12737 – N0133 E12747 – N0124 E12748
FCST VA CLD +18 HR: 16/2030Z SFC/FL060 N0129 E12737 – N0130
E12737 – N0133 E12747 – N0124 E12747
RMK: VA UNIDNTIFIABLE ON SATELLITE IMAGERY HOWEVER,
INTERMITTENT DISCRETE ERUPTION EXPECTED TO BE ONGOING.
HEIGHT AND MOVEMENT BASED ON RECENT GROUND REPORT AND MODEL
GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251116/0900Z=

Volcanic Ash Advisory Center Darwin (VAAC) issued the following report:

FVAU02 at 01:21 UTC, 16/11/25 from ADRM
VA ADVISORY
DTG: 20251116/0130Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SUMMIT ELEV: 3657M
ADVISORY NR: 2025/1303
INFO SOURCE: CVGHM, HIMAWARI-8
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA ERUPTION REPORTED AT 15/2200Z
EST VA DTG: 16/0100Z
EST VA CLD: SFC/FL150 S0805 E11254 – S0751 E11312 – S0804
E11321 – S0808 E11311 – S0808 E11255 MOV NE 15KT
FCST VA CLD +6 HR: 16/0700Z SFC/FL150 S0805 E11254 – S0750
E11312 – S0803 E11321 – S0809 E11313 – S0808 E11255
FCST VA CLD +12 HR: 16/1300Z SFC/FL150 S0805 E11253 – S0749
E11312 – S0803 E11321 – S0808 E11312 – S0808 E11255
FCST VA CLD +18 HR: 16/1900Z SFC/FL150 S0805 E11254 – S0759
E11316 – S0813 E11316 – S0808 E11254
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD, HOWEVER GROUND REPORTS INDICATE INTERMITTENT DISCRETE
ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON RECENT
GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251116/0730Z=

Volcanic Ash Advisory Center Washington (VAAC) issued the following report:

FVXX23 at 23:51 UTC, 15/11/25 from KNES
VA ADVISORY
DTG: 20251115/2349Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SUMMIT ELEV: 12346 FT [3763 M]

ADVISORY NR: 2025/549

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: VA EM DETECTED

EST VA DTG: 15/2320Z

EST VA CLD: SFC/FL140 N1434 W09112 – N1428 W09052
– N1427 W09052 – N1426 W09113 – N1434 W09112 MOV
W 10KT

FCST VA CLD +6HR: 16/0530Z SFC/FL140 N1443 W09113
– N1428 W09052 – N1427 W09052 – N1432 W09118 –
N1443 W09113

FCST VA CLD +12HR: 16/1130Z SFC/FL140 N1435
W09116 – N1429 W09052 – N1427 W09052 – N1426
W09118 – N1435 W09116

FCST VA CLD +18HR: 16/1730Z SFC/FL140 N1432
W09118 – N1428 W09052 – N1427 W09052 – N1423
W09118 – N1432 W09118

RMK: EVIDENCE OF VOL ACT AND VA EM OBS AROUND
SUMMIT IN STLT IMG. OBS VA DIR NOT CERTAIN DUE TO
MET CLD CVR. EXP W MOVNT THRU T+18 HRS. FL BSD ON
PST ACT. FCST BSD ON NWP MDLS. …LINER

NXT ADVISORY: WILL BE ISSUED BY 20251116/0545Z