Semeru Volcanic Ash Advisory: ash plume to 14,000 ft (4,300 m) as of Oct 15, 11:40 UTC

Satellite image of Semeru volcano on 15 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140.
Original VAAC bulletin:

FVAU02 at 11:55 UTC, 15/10/26 from ADRM
VA ADVISORY
DTG: 20261015/1200Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1180
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA TO FL140 OBS AT 15/1140Z MOV W
OBS VA DTG: 15/1140Z
OBS VA CLD: SFC/FL140 S0802 E11258 - S0812 E11258 - S0821
 E11150 - S0746 E11154 MOV W 15KT
FCST VA CLD +6 HR: 15/1740Z SFC/FL140 S0803 E11258 - S0810
 E11258 - S0815 E11201 - S0741 E11207
FCST VA CLD +12 HR: 15/2340Z SFC/FL140 S0803 E11258 - S0810
 E11258 - S0815 E11201 - S0742 E11206
FCST VA CLD +18 HR: 16/0540Z SFC/FL140 S0801 E11259 - S0810
 E11300 - S0836 E11205 - S0752 E11200
RMK: DISCRETE VA EMISSIONS IDENTIFIABLE ON SATELLITE
 IMAGERY. REGULAR GROUND REPORTS AND WEBCAM IMAGERY ALSO
 INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND
 MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND
 MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261015/1800Z=