Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows:
FVAU02 at 00:17 UTC, 12/04/26 from ADRM
VA ADVISORY
DTG: 20260412/0020Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/416
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 12/0000Z MOV NW
OBS VA DTG: 12/0000Z
OBS VA CLD: SFC/FL150 S0811 E11256 – S0800 E11229 – S0746
E11232 – S0743 E11247 – S0806 E11301 MOV NW 10KT
FCST VA CLD +6 HR: 12/0600Z SFC/FL150 S0810 E11254 – S0758
E11233 – S0744 E11242 – S0746 E11259 – S0807 E11300
FCST VA CLD +12 HR: 12/1200Z SFC/FL150 S0806 E11259 – S0811
E11255 – S0801 E11231 – S0748 E11235 – S0744 E11250
FCST VA CLD +18 HR: 12/1800Z SFC/FL150 S0806 E11300 – S0812
E11255 – S0800 E11231 – S0744 E11238 – S0742 E11255
RMK: DISCRETE, INTERMITTENT VA EMISSIONS IDENTIFIABLE ON
RECENT SATELLITE IMAGERY. GROUND REPORTS CONFIRM CONTINUING
ERUPTIONS. VA HEIGHT BASED ON GROUND REPORTS AND RECENT
ERUPTIVE BEHAVIOUR, MOVEMENT BASED ON SATELLITE IMAGERY AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260412/0620Z=