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

Satellite image of Lewotolo volcano on 21 Sep 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, and moving at 10 kts in W direction.
Original VAAC bulletin:

FVAU04 at 22:56 UTC, 21/09/26 from ADRM
VA ADVISORY
DTG: 20260921/2300Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/263
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 OBS AT 21/2240Z EXTD W
OBS VA DTG: 21/2240Z
OBS VA CLD: SFC/FL070 S0817 E12333 - S0827 E12307 - S0811
 E12305 - S0813 E12333 MOV W 10KT
FCST VA CLD +6 HR: 22/0440Z SFC/FL070 S0815 E12332 - S0819
 E12331 - S0816 E12306 - S0805 E12306 - S0759 E12315
FCST VA CLD +12 HR: 22/1040Z SFC/FL070 S0815 E12332 - S0819
 E12331 - S0816 E12305 - S0806 E12304 - S0800 E12311
FCST VA CLD +18 HR: 22/1640Z SFC/FL070 S0816 E12333 - S0819
 E12331 - S0818 E12305 - S0804 E12305 - S0756 E12318
RMK: CONTINUOUS VA EMISSION OBSERVED ON SATELLITE. HEIGHT
 AND FCST BASED ON SATELLITE IMAGE, GROUND REPORTS AND MODEL
 GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260922/0500Z=