Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Oct 12, 00:00 UTC

Satellite image of Semeru volcano on 12 Oct 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 00:14 UTC, 12/10/26 from ADRM
VA ADVISORY
DTG: 20261012/0020Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1166
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 MOV SW
OBS VA DTG: 12/0000Z
OBS VA CLD: SFC/FL150 S0801 E11254 - S0807 E11300 - S0838
 E11244 - S0834 E11231 - S0824 E11227 MOV SW 10KT
FCST VA CLD +6 HR: 12/0600Z SFC/FL150 S0802 E11255 - S0808
 E11301 - S0839 E11247 - S0829 E11224 - S0800 E11222
FCST VA CLD +12 HR: 12/1200Z SFC/FL150 S0802 E11256 - S0809
 E11300 - S0839 E11247 - S0830 E11225 - S0800 E11221
FCST VA CLD +18 HR: 12/1800Z SFC/FL150 S0809 E11258 - S0825
 E11223 - S0758 E11221 - S0802 E11257
RMK: VA IDENTIFIABLE ON SATELLITE IMAGERY. GROUND REPORTS
 ALSO INDICATE ONGOING EMISSIONS. HEIGHT AND MOVEMENT BASED
 ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261012/0620Z=