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Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Aug 15, 04:47 UTC

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 04:47 UTC, 15/08/26 from ADRM
VA ADVISORY
DTG: 20260815/0450Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/928
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 15/0230Z MOV WNW
EST VA DTG: 15/0430Z
EST VA CLD: SFC/FL150 S0802 E11301 - S0812 E11301 - S0815
 E11236 - S0752 E11232 - S0742 E11253 MOV NW 05KT
FCST VA CLD +6 HR: 15/1030Z SFC/FL150 S0802 E11301 - S0812
 E11301 - S0815 E11236 - S0800 E11229 - S0748 E11241
FCST VA CLD +12 HR: 15/1630Z SFC/FL150 S0802 E11301 - S0812
 E11301 - S0825 E11241 - S0814 E11228 - S0757 E11237
FCST VA CLD +18 HR: 15/2230Z SFC/FL150 S0802 E11301 - S0812
 E11301 - S0825 E11241 - S0814 E11228 - S0757 E11237
RMK: VA NOT IDENTIFIABLE ON CURRENT SAT IMG DUE TO MET
 CLOUD. GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE
 ONGOING. VA HEIGHT AND MOVEMENT BASED ON PAST SATELLITE
 IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260815/1050Z=
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Lewotobi Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Aug 15, 01:08 UTC

Satellite image of Lewotobi volcano on 15 Aug 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:

FVAU04 at 01:08 UTC, 15/08/26 from ADRM
VA ADVISORY
DTG: 20260815/0110Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/379
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 REP AT 14/1853Z MOV WNW
EST VA DTG: 15/0050Z
EST VA CLD: SFC/FL070 S0837 E12249 - S0836 E12219 - S0822
 E12216 - S0812 E12227 - S0830 E12250 MOV W 10KT
FCST VA CLD +6 HR: 15/0650Z SFC/FL070 S0837 E12249 - S0853
 E12227 - S0841 E12217 - S0827 E12222 - S0830 E12250
FCST VA CLD +12 HR: 15/1250Z SFC/FL070 S0837 E12249 - S0838
 E12220 - S0825 E12215 - S0817 E12225 - S0830 E12250
FCST VA CLD +18 HR: 15/1850Z SFC/FL070 S0837 E12249 - S0838
 E12220 - S0823 E12216 - S0812 E12228 - S0830 E12250
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
 CLOUD. GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE
 ONGOING. VA HEIGHT AND MOVEMENT BASED ON PAST SATELLITE
 IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260815/0710Z=