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Satellite image of Semeru volcano on 18 Aug 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 04:50 UTC, 18/08/26 from ADRM
VA ADVISORY
DTG: 20260818/0450Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/940
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA TO FL150 OBS AT 18/0430Z MOV SE
OBS VA DTG: 18/0430Z
OBS VA CLD: SFC/FL150 S0804 E11251 - S0753 E11314 - S0808
 E11320 - S0823 E11311 - S0811 E11251 MOV E 10KT
FCST VA CLD +6 HR: 18/1030Z SFC/FL150 S0810 E11252 - S0804
 E11250 - S0750 E11311 - S0758 E11318 - S0810 E11318
FCST VA CLD +12 HR: 18/1630Z SFC/FL150 S0806 E11250 - S0747
 E11305 - S0750 E11316 - S0801 E11318 - S0811 E11254
FCST VA CLD +18 HR: 18/2230Z SFC/FL150 S0809 E11251 - S0744
 E11257 - S0746 E11310 - S0755 E11317 - S0810 E11256
RMK: VA IDENTIFIABLE ON RECENT SATELLITE IMAGERY MOV SE.
 INTERMITTENT VA EMISSIONS ARE ONGOING. VA HEIGHT AND MOV
 BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL
 GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260818/1050Z=

Satellite image of Etna volcano on 18 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Toulouse warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150, and moving at 25 kts in SE direction.

Original VAAC bulletin:

FVXX01 at 03:00 UTC, 18/08/26 from LFPW
VA ADVISORY
DTG: 20260818/0300Z
VAAC: TOULOUSE
VOLCANO: ETNA 211060
PSN: N3744 E01459
AREA: SICILY VOLCANIC PROVINCE
SOURCE ELEV: 3357M
ADVISORY NR: 2026/104
INFO SOURCE: VONA, INGV WEBCAMS, SAT IMAGERY
AVIATION COLOUR CODE: RED
ERUPTION DETAILS: ERUPTION AT 20260816/1620Z ONGOING ERUPTION
DECREASING
OBS VA DTG: 18/0300Z
OBS VA CLD: SFC/FL150 N3748 E01503 - N3645 E01841 - N3536 E01800 -
N3736 E01500 - N3748 E01503 MOV SE 25KT FL050/200 N3536 E01800 -
N3645 E01839 - N3521 E02315 - N3400 E02342 - N3200 E02130 - N3536
E01800 MOV SE 20KT
FCST VA CLD +6 HR: 18/0900Z SFC/FL150 N3757 E01503 - N3538 E02027 -
N3408 E01856 - N3730 E01442 - N3757 E01503 FL050/200 NO VA EXP
FCST VA CLD +12 HR: 18/1500Z SFC/FL150 N3438 E02015 - N3342 E01824 -
N3527 E01700 - N3733 E01445 - N3748 E01500 - N3618 E01806 - N3438
E02015
FCST VA CLD +18 HR: 18/2100Z SFC/FL150 N3430 E02006 - N3351 E01815 -
N3530 E01703 - N3736 E01448 - N3751 E01506 - N3621 E01809 - N3430
E02006
RMK: ASH EMISSION DECREASING. ASH CLOUD MAINLY COMPOSED OF WATER
AND SO2 AND EASTERN CLOUD DISSIPATING. QVA NOT PROVIDED DUE TO THE
LOW INTENSITY OF THE EVENT.
NXT ADVISORY: NO LATER THAN 20260818/0900Z=

Satellite image of Dukono volcano on 17 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060, and moving at 10 kts in N direction.

Original VAAC bulletin:

FVAU01 at 22:21 UTC, 17/08/26 from ADRM
VA ADVISORY
DTG: 20260817/2220Z
VAAC: DARWIN
VOLCANO: DUKONO 268010
PSN: N0142 E12754
AREA: INDONESIA
SOURCE ELEV: 1229M AMSL
ADVISORY NR: 2026/638
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: CONTINUOUS VA TO FL060 OBS AT 17/2200Z
 EXTD N
OBS VA DTG: 17/2200Z
OBS VA CLD: SFC/FL060 N0134 E12756 - N0136 E12747 - N0245
 E12744 - N0246 E12813 - N0231 E12836 MOV N 10KT
FCST VA CLD +6 HR: 18/0400Z SFC/FL060 N0134 E12756 - N0136
 E12747 - N0244 E12744 - N0246 E12813 - N0230 E12836
FCST VA CLD +12 HR: 18/1000Z SFC/FL060 N0134 E12756 - N0136
 E12747 - N0245 E12745 - N0246 E12813 - N0230 E12836
FCST VA CLD +18 HR: 18/1600Z SFC/FL060 N0134 E12756 - N0136
 E12747 - N0244 E12745 - N0246 E12813 - N0231 E12836
RMK: CONTINUOUS VA IDENTIFIABLE ON SATELLITE IMAGERY MOV N.
 HEIGHT AND MOV BASED ON SATELLITE IMAGERY AND MODEL
 GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260818/0420Z=