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Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 10 kts in NE direction.
The full report is as follows:

FVAU04 at 16:56 UTC, 23/07/26 from ADRM
VA ADVISORY
DTG: 20260723/1700Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/288
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL100 REPORTED AT 23/1555Z
EST VA DTG: 23/1640Z
EST VA CLD: SFC/FL100 S0846 E12230 – S0820 E12226 – S0809
E12254 – S0811 E12321 – S0836 E12315 MOV NE 10KT
FCST VA CLD +6 HR: 23/2240Z SFC/FL100 S0842 E12233 – S0821
E12232 – S0813 E12258 – S0823 E12321 – S0844 E12309
FCST VA CLD +12 HR: 24/0440Z SFC/FL100 S0848 E12239 – S0838
E12219 – S0817 E12234 – S0818 E12307 – S0838 E12324 – S0849
E12305
FCST VA CLD +18 HR: 24/1040Z SFC/FL100 S0841 E12231 – S0828
E12219 – S0816 E12232 – S0819 E12310 – S0839 E12319 – S0851
E12301
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY. AREA OBSC BY
MET CLD. INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT
AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260723/2300Z=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows:

FVXX20 at 10:46 UTC, 23/07/26 from KNES
VA ADVISORY
DTG: 20260723/1044Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2026/853

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

ERUPTION DETAILS:

OBS VA DTG: 23/1020Z

OBS VA CLD: SFC/FL160 N1430 W09052 – N1427 W09052
– N1418 W09134 – N1428 W09135 – N1430 W09052 MOV
SW 20KT

FCST VA CLD +6HR: 23/1630Z SFC/FL160 N1429 W09052
– N1427 W09052 – N1412 W09144 – N1428 W09147 –
N1429 W09052

FCST VA CLD +12HR: 23/2230Z SFC/FL160 N1430
W09052 – N1428 W09052 – N1401 W09134 – N1414
W09141 – N1430 W09052

FCST VA CLD +18HR: 24/0430Z SFC/FL160 N1429
W09053 – N1428 W09051 – N1359 W09133 – N1411
W09141 – N1429 W09053

RMK: FREQ VA EMS OBS IN SAT MOV WSW UP TO APPX 40
NM FM SUMMIT. OBS VA FL ESTD FM NWP MDLS WEBCAM.
FL MVMT FCST TO TURN SLIGHTLY TO SW THRU T+18
HRS. …CLARK

NXT ADVISORY: WILL BE ISSUED BY 20260723/1645Z

Satellite image of Semeru volcano on 23 Jul 2026

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

FVAU02 at 07:51 UTC, 23/07/26 from ADRM
VA ADVISORY
DTG: 20260723/0750Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/836
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA LAST REPORTED AT 23/0202Z
EST VA DTG: 23/0730Z
EST VA CLD: SFC/FL150 S0802 E11252 – S0801 E11339 – S0815
E11340 – S0825 E11335 – S0810 E11251 MOV E 35KT
FCST VA CLD +6 HR: 23/1330Z SFC/FL150 S0802 E11252 – S0801
E11339 – S0814 E11340 – S0826 E11335 – S0810 E11251
FCST VA CLD +12 HR: 23/1930Z SFC/FL150 S0802 E11252 – S0801
E11339 – S0814 E11340 – S0825 E11335 – S0810 E11251
FCST VA CLD +18 HR: 24/0130Z SFC/FL150 S0802 E11252 – S0801
E11339 – S0814 E11340 – S0825 E11335 – S0810 E11251
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGE.
INTERMITTENT DISCRETE VA EMISSIONS EXPECTED TO CONTINUE. VA
HEIGHT AND MOVEMENT BASED ON LAST SATELLITE OBS, GROUND
REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260723/1350Z=