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Satellite image of Semeru volcano on 29 Dec 2025

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in SE direction.
The full report is as follows:

FVAU02 at 22:08 UTC, 29/12/25 from ADRM
VA ADVISORY
DTG: 20251229/2210Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1490
INFO SOURCE: CVGHM, HIMAWARI-9, WEBCAM
ERUPTION DETAILS: VA TO FL150 LAST REPORTED AT 29/1908Z
EST VA DTG: 29/2140Z
EST VA CLD: SFC/FL150 S0806 E11251 – S0801 E11254 – S0807
E11318 – S0818 E11318 – S0823 E11307 MOV SE 10KT
FCST VA CLD +6 HR: 30/0340Z SFC/FL150 S0806 E11252 – S0801
E11255 – S0807 E11318 – S0818 E11318 – S0824 E11306
FCST VA CLD +12 HR: 30/0940Z SFC/FL150 S0806 E11251 – S0801
E11255 – S0807 E11318 – S0818 E11319 – S0824 E11306
FCST VA CLD +18 HR: 30/1540Z SFC/FL150 S0808 E11253 – S0801
E11254 – S0800 E11319 – S0811 E11325 – S0822 E11314
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. RECENT GROUND REPORTS INDICATE INTERMITTENT DISCRETE
EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON
GROUND REPORTS AND MODEL GUIDANCE. PREVIOUS ADVISORY UPDATED
DUE TO ERROR IN DTG.
NXT ADVISORY: NO LATER THAN 20251230/0410Z=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Toulouse warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 and is moving at 10 kts in NW direction.
The full report is as follows:

FVXX01 at 11:00 UTC, 29/12/25 from LFPW
VA ADVISORY
DTG: 20251229/1100Z
VAAC: TOULOUSE
VOLCANO: ETNA 211060
PSN: N3744 E01459
AREA: SICILY VOLCANIC PROVINCE
SOURCE ELEV: 3357M
ADVISORY NR: 2025/95
INFO SOURCE: VONA, WEBCAM, SAT IMAGERY
AVIATION COLOUR CODE: RED
ERUPTION DETAILS: ERUPTION AT 20251228/1918Z ERUPTION ONGOING
OBS VA DTG: 29/1100Z
OBS VA CLD: SFC/FL160 N3742 E01500 – N3806 E01439 – N3812 E01503 –
N3745 E01506 – N3742 E01500 MOV NW 10KT
FCST VA CLD +6 HR: 29/1700Z NO VA EXP
FCST VA CLD +12 HR: 29/2300Z NO VA EXP
FCST VA CLD +18 HR: 30/0500Z NO VA EXP
RMK: VOLCANIC ASH EMISSION OF LIGHT TO MODERATE INTENSITY, DRIFTING
NORTH NORTHWESTWARD. DUE TO THE LOW INTENSITY OF THIS ERUPTIVE
EVENT QVA DO NOT SHOW ANY SIGNIFICANT AREA AND WILL NOT BE
PROVIDED.
NXT ADVISORY: NO LATER THAN 20251229/1400Z=

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

FVAU02 at 10:25 UTC, 29/12/25 from ADRM
VA ADVISORY
DTG: 20251229/1030Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1487
INFO SOURCE: CVGHM, HIMAWARI-9, WEBCAM
ERUPTION DETAILS: ERUPTION LAST REPORTED AT 28/1634Z
EST VA DTG: 29/1010Z
EST VA CLD: SFC/FL150 S0806 E11251 – S0758 E11257 – S0807
E11318 – S0824 E11306 MOV SE 10KT
FCST VA CLD +6 HR: 29/1610Z SFC/FL150 S0806 E11251 – S0758
E11258 – S0807 E11318 – S0824 E11306
FCST VA CLD +12 HR: 29/2210Z SFC/FL150 S0806 E11251 – S0758
E11258 – S0807 E11318 – S0824 E11306
FCST VA CLD +18 HR: 30/0410Z SFC/FL150 S0806 E11251 – S0758
E11258 – S0807 E11317 – S0824 E11306
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. RECENT GROUND REPORTS INDICATE INTERMITTENT DISCRETE
EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON
GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251229/1630Z=