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Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Oct 12, 00:00 UTC

Satellite image of Semeru volcano on 12 Oct 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 00:14 UTC, 12/10/26 from ADRM
VA ADVISORY
DTG: 20261012/0020Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1166
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 MOV SW
OBS VA DTG: 12/0000Z
OBS VA CLD: SFC/FL150 S0801 E11254 - S0807 E11300 - S0838
 E11244 - S0834 E11231 - S0824 E11227 MOV SW 10KT
FCST VA CLD +6 HR: 12/0600Z SFC/FL150 S0802 E11255 - S0808
 E11301 - S0839 E11247 - S0829 E11224 - S0800 E11222
FCST VA CLD +12 HR: 12/1200Z SFC/FL150 S0802 E11256 - S0809
 E11300 - S0839 E11247 - S0830 E11225 - S0800 E11221
FCST VA CLD +18 HR: 12/1800Z SFC/FL150 S0809 E11258 - S0825
 E11223 - S0758 E11221 - S0802 E11257
RMK: VA IDENTIFIABLE ON SATELLITE IMAGERY. GROUND REPORTS
 ALSO INDICATE ONGOING EMISSIONS. HEIGHT AND MOVEMENT BASED
 ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261012/0620Z=
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Lewotolo Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Oct 11, 22:00 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070, and moving at 10 kts in W direction.
Original VAAC bulletin:

FVAU06 at 22:21 UTC, 11/10/26 from ADRM
VA ADVISORY
DTG: 20261011/2223Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/326
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 EXT W
OBS VA DTG: 11/2200Z
OBS VA CLD: SFC/FL070 S0815 E12331 - S0817 E12331 - S0821
 E12322 - S0819 E12318 - S0815 E12319 MOV W 10KT
FCST VA CLD +6 HR: 12/0400Z SFC/FL070 S0817 E12331 - S0823
 E12318 - S0816 E12313 - S0810 E12317 - S0815 E12331
FCST VA CLD +12 HR: 12/1000Z SFC/FL070 S0815 E12331 - S0818
 E12331 - S0822 E12317 - S0815 E12314 - S0808 E12320
FCST VA CLD +18 HR: 12/1600Z SFC/FL070 S0815 E12331 - S0817
 E12331 - S0821 E12317 - S0815 E12314 - S0808 E12320
RMK: VA IDENTIFIABLE ON SATELLITE IMAGERY. HEIGHT AND
 MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORT AND MODEL
 GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261012/0423Z=
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Ibu Volcano Volcanic Ash Advisory: VA REP FM GND AT 11/1104Z EST VA DTG: 11/1830Z

The Volcanic Ash Advisory Center (VAAC) Darwin issued the following bulletin.
Original VAAC bulletin:

FVAU03 at 18:49 UTC, 11/10/26 from ADRM
VA ADVISORY
DTG: 20261011/1900Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1156
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA REP FM GND AT 11/1104Z
EST VA DTG: 11/1830Z
EST VA CLD: SFC/FL070 N0126 E12739 - N0128 E12727 - N0137
 E12711 - N0154 E12713 - N0156 E12728 - N0129 E12742 MOV NW
 10KT
FCST VA CLD +6 HR: 12/0030Z SFC/FL070 N0125 E12739 - N0134
 E12709 - N0153 E12713 - N0156 E12730 - N0130 E12743
FCST VA CLD +12 HR: 12/0630Z SFC/FL070 N0125 E12740 - N0126
 E12728 - N0132 E12708 - N0150 E12713 - N0156 E12730 - N0129
 E12743
FCST VA CLD +18 HR: 12/1230Z SFC/FL070 N0125 E12740 - N0121
 E12727 - N0132 E12706 - N0154 E12709 - N0157 E12732 - N0130
 E12744
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY DUE TO
 MET CLOUD. HOWEVER, INTERMITTENT DISCRETE EMISSIONS ARE
 EXPECTED TO BE ONGOING. VA HEIGHT AND FCST BASED ON
 SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261012/0100Z=
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Lewotolo Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Oct 11, 10:10 UTC

Satellite image of Lewotolo volcano on 11 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070.
Original VAAC bulletin:

FVAU06 at 10:29 UTC, 11/10/26 from ADRM
VA ADVISORY
DTG: 20261011/1029Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/324
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 OBS 11/1010Z MOV NW
OBS VA DTG: 11/1010Z
OBS VA CLD: SFC/FL070 S0817 E12331 - S0818 E12330 - S0814
 E12318 - S0808 E12318 - S0807 E12324 MOV NW 10KT
FCST VA CLD +6 HR: 11/1610Z SFC/FL070 S0816 E12332 - S0818
 E12330 - S0816 E12317 - S0810 E12317 - S0808 E12324
FCST VA CLD +12 HR: 11/2210Z SFC/FL070 S0816 E12331 - S0818
 E12331 - S0819 E12320 - S0813 E12317 - S0810 E12323
FCST VA CLD +18 HR: 12/0410Z SFC/FL070 S0815 E12331 - S0817
 E12331 - S0819 E12320 - S0814 E12318 - S0809 E12323
RMK: VA IDENTIFIABLE ON LATEST SATELLITE IMAGERY. RECENT
 GROUND REPORT INDICATES VA EMISSION 500M ABOVE SUMMIT.
 HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND
 REPORT AND MODEL DATA.
NXT ADVISORY: NO LATER THAN 20261011/1629Z=