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Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Buenos Aires warned of a volcanic ash plume rising to an estimated 22000 ft (6700 m), or flight level 220, and moving at 10 kts in SE direction.
Original VAAC bulletin:

FVAG01 at 12:22 UTC, 04/09/26 from SABM
VA ADVISORY
DTG: 20260904/1225Z

VAAC: BUENOS AIRES

VOLCANO: SABANCAYA 354006
PSN: S1547 W07150

AREA: PERU

SUMMIT ELEV: 19576 FT [5967 M]

ADVISORY NR: 2026/503

INFO SOURCE: GOES-E. GFS. WEBCAM.

AVIATION COLOUR CODE: NOT GIVEN

ERUPTION DETAILS: WEAK PUFF EMS

OBS VA DTG: 04/1210Z

OBS VA CLD: SFC/FL220 S1546 W07152 - S1553 W07138
- S1558 W07148 - S1546 W07152 MOV SE 10KT

FCST VA CLD +6 HR: 04/1810Z SFC/FL220 S1546 W07152
- S1601 W07128 - S1611 W07141 - S1546 W07152

FCST VA CLD +12 HR: 05/0010Z NOT AVBL

FCST VA CLD +18 HR: 05/0610Z NOT AVBL

RMK: A WEAK ISOLATED PUFF IS SEEN ON STLT IMAGERY
MOV SE 10 KT TL FL220 ...SMN

NXT ADVISORY: WILL BE ISSUED BY 20260904/1825Z=

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Toulouse warned of a volcanic ash plume rising to an estimated 12000 ft (3700 m), or flight level 120, and moving at 15 kts in S direction.
Original VAAC bulletin:

FVXX01 at 06:44 UTC, 04/09/26 from LFPW
VA ADVISORY
DTG: 20260904/0644Z
VAAC: TOULOUSE
VOLCANO: ETNA 211060
PSN: N3744 E01459
AREA: SICILY VOLCANIC PROVINCE
SOURCE ELEV: 3357M
ADVISORY NR: 2026/112
INFO SOURCE: INGV WEBCAM
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: ERUPTION AT 20260904/0600Z NO EXPLOSIVE ACTIVITY
OBS VA DTG: 04/0630Z
OBS VA CLD: SFC/FL120 N3745 E01506 - N3721 E01506 - N3721 E01448 -
N3748 E01457 - N3745 E01506 MOV S 15KT
FCST VA CLD +6 HR: 04/1230Z SFC/FL120 N3745 E01503 - N3712 E01506 -
N3712 E01445 - N3748 E01457 - N3745 E01503
FCST VA CLD +12 HR: 04/1830Z NO VA EXP
FCST VA CLD +18 HR: 05/0030Z NO VA EXP
RMK: DARK PLUME OVER THE CRATER WITH SIGNIFICANT ASH CONCENTRATIONS
IN THE CLOSE VICINITY OF THE VOLCANO. THIN PLUME INDENTIFIAFLE FROM
SAT IMAGERY, DISSIPATING WHILE DRIFTING SOUTHWARD. DUE TO THE LOW
INTENSITY OF THE ERUPTIVE EVENT, QVA NOT PROVIDED.
NXT ADVISORY: NO FURTHER ADVISORIES=

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 17000 ft (5200 m), or flight level 170.
Original VAAC bulletin:

FVXX23 at 02:03 UTC, 04/09/26 from KNES
VA ADVISORY
DTG: 20260904/0200Z

VAAC: WASHINGTON

VOLCANO: PURACE 351060
PSN: N0219 W07624

AREA: COLOMBIA

SOURCE ELEV: 15256 FT AMSL

ADVISORY NR: 2026/480

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

ERUPTION DETAILS: NEW VA EMS

OBS VA DTG: 04/0130Z

OBS VA CLD: SFC/FL170 N0223 W07636 - N0220 W07624
- N0219 W07624 - N0216 W07636 - N0223 W07636 MOV
W 20KT 

FCST VA CLD +6HR: 04/0730Z SFC/FL170 N0225 W07638
- N0220 W07623 - N0219 W07625 - N0216 W07638 -
N0225 W07638 

FCST VA CLD +12HR: 04/1330Z SFC/FL170 N0226
W07639 - N0220 W07624 - N0219 W07624 - N0216
W07639 - N0226 W07639 

FCST VA CLD +18HR: 04/1930Z SFC/FL170 N0226
W07640 - N0220 W07624 - N0218 W07625 - N0216
W07639 - N0226 W07640 

RMK: VA DETECTED ON STLT MOVG W OF SUMMIT. VONA
INDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FL
NXT 18 HR. ...KONON

NXT ADVISORY: WILL BE ISSUED BY 20260904/0800Z

Satellite image of Semeru volcano on 4 Sep 2026

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 00:08 UTC, 04/09/26 from ADRM
VA ADVISORY
DTG: 20260904/0000Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1010
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA OBS TO FL150 AT 03/2340Z MOV NW
OBS VA DTG: 03/2340Z
OBS VA CLD: SFC/FL150 S0807 E11247 - S0743 E11259 - S0751
 E11319 - S0803 E11323 - S0817 E11321 - S0813 E11250 MOV NW
 05KT
FCST VA CLD +6 HR: 04/0540Z SFC/FL150 S0806 E11247 - S0753
 E11252 - S0745 E11307 - S0752 E11320 - S0800 E11324 - S0810
 E11324 - S0820 E11320 - S0812 E11249
FCST VA CLD +12 HR: 04/1140Z SFC/FL150 S0806 E11248 - S0743
 E11259 - S0750 E11317 - S0808 E11323 - S0813 E11252
FCST VA CLD +18 HR: 04/1740Z SFC/FL150 S0808 E11249 - S0743
 E11259 - S0749 E11319 - S0805 E11323 - S0807 E11323 - S0812
 E11254
RMK: VA PARTIALLY IDENTIFIABLE ON RECENT SATELLITE IMAGERY.
 VA HEIGHT AND FORECAST BASED ON HIMAWARI-9 SAT IMG, GROUND
 REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260904/0600Z=