Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Sep 29, 17:00 UTC

Satellite image of Semeru volcano on 29 Sep 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 17:13 UTC, 29/09/26 from ADRM
VA ADVISORY
DTG: 20260929/1720Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1116
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 29/1700Z MOV SE
OBS VA DTG: 29/1700Z
OBS VA CLD: SFC/FL150 S0759 E11253 - S0803 E11317 - S0828
 E11312 - S0829 E11250 - S0805 E11247 MOV SE 10KT
FCST VA CLD +6 HR: 29/2300Z SFC/FL150 S0805 E11248 - S0758
 E11254 - S0802 E11315 - S0808 E11319 - S0827 E11312 - S0827
 E11251
FCST VA CLD +12 HR: 30/0500Z SFC/FL150 S0807 E11250 - S0802
 E11251 - S0756 E11300 - S0800 E11323 - S0823 E11320 - S0826
 E11258
FCST VA CLD +18 HR: 30/1100Z SFC/FL150 S0807 E11249 - S0802
 E11249 - S0752 E11301 - S0754 E11322 - S0816 E11325 - S0822
 E11304
RMK: VA CLEARLY IDENTIFIABLE ON LATEST RGB SATELLITE. VA
 HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND
 REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260929/2320Z=