Lewotobi Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Aug 21, 22:40 UTC

Satellite image of Lewotobi volcano on 21 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 23:01 UTC, 21/08/26 from ADRM
VA ADVISORY
DTG: 20260821/2300Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/406
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL070 MOV N REPORTED AT 21/2229Z
OBS VA DTG: 21/2240Z
OBS VA CLD: SFC/FL070 S0834 E12248 - S0834 E12245 - S0833
 E12237 - S0826 E12238 - S0825 E12246 - S0828 E12253 MOV N
 10KT
FCST VA CLD +6 HR: 22/0440Z SFC/FL070 S0834 E12246 - S0832
 E12229 - S0818 E12230 - S0814 E12246 - S0825 E12256 - S0834
 E12248
FCST VA CLD +12 HR: 22/1040Z SFC/FL070 S0833 E12248 - S0834
 E12246 - S0832 E12229 - S0818 E12230 - S0814 E12246 - S0824
 E12256
FCST VA CLD +18 HR: 22/1640Z SFC/FL070 S0834 E12246 - S0832
 E12230 - S0818 E12230 - S0814 E12246 - S0824 E12256 - S0834
 E12248
RMK: CVGHM REPORTED ERUPTION TO 500M ABOVE SUMMIT. VA NOT
 IDENTIFIABLE ON SATELLITE IMAGERY. VA HEIGHT BASED ON GROUND
 REPORT AND MOVEMENT BASED ON CONSENSUS MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260822/0500Z=