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Lewotobi Volcanic Ash Advisory: ash plume to 8,000 ft (2,400 m) as of Aug 19, 01:28 UTC

Satellite image of Lewotobi volcano on 19 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 8000 ft (2400 m), or flight level 080, and moving at 10 kts in W direction.

Original VAAC bulletin:

FVAU04 at 01:28 UTC, 19/08/26 from ADRM
VA ADVISORY
DTG: 20260819/0130Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/395
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL080 REP AT 18/1310Z
EST VA DTG: 19/0110Z
EST VA CLD: SFC/FL080 S0835 E12248 - S0841 E12222 - S0833
 E12219 - S0824 E12222 - S0830 E12248 MOV W 10KT
FCST VA CLD +6 HR: 19/0710Z SFC/FL080 S0835 E12248 - S0841
 E12222 - S0833 E12219 - S0824 E12222 - S0830 E12248
FCST VA CLD +12 HR: 19/1310Z SFC/FL080 S0835 E12248 - S0841
 E12222 - S0833 E12219 - S0824 E12222 - S0830 E12248
FCST VA CLD +18 HR: 19/1910Z SFC/FL080 S0835 E12248 - S0841
 E12222 - S0833 E12219 - S0824 E12222 - S0830 E12248
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY. GROUND
 REPORTS CONFIRM INTERMITTENT ERUPTIONS ARE ONGOING. VA
 HEIGHT AND MOVEMENT BASED ON RECENT SATELLITE IMAGERY,
 GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260819/0730Z=
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Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Aug 18, 22:42 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, and moving at 05 kts in NE direction.

Original VAAC bulletin:

FVAU02 at 22:42 UTC, 18/08/26 from ADRM
VA ADVISORY
DTG: 20260818/2250Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/943
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 REP AT 18/00650Z
EST VA DTG: 18/2230Z
EST VA CLD: SFC/FL150 S0808 E11253 - S0744 E11253 - S0745
 E11306 - S0754 E11313 - S0808 E11256 MOV NE 05KT
FCST VA CLD +6 HR: 19/0430Z SFC/FL150 S0808 E11253 - S0746
 E11246 - S0743 E11258 - S0749 E11309 - S0809 E11257
FCST VA CLD +12 HR: 19/1030Z SFC/FL150 S0808 E11253 - S0746
 E11246 - S0743 E11258 - S0749 E11309 - S0809 E11257
FCST VA CLD +18 HR: 19/1630Z SFC/FL150 S0808 E11253 - S0746
 E11246 - S0743 E11258 - S0749 E11309 - S0808 E11257
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
 CLOUD. INTERMITTENT VA EMISSIONS EXPECTED TO BE ONGOING. VA
 HEIGHT AND MOV BASED ON SATELLITE IMAGERY, GROUND REPORTS
 AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260819/0450Z=