Semeru Volcano Volcanic Ash Advisory: VA TO FL150 OBS AT 05/2140Z MOV S OBS VA DTG: 05/2140Z to 15000 ft (4600 m)

Satellite image of Semeru volcano on 5 Dec 2025

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 22:06 UTC, 05/12/25 from ADRM
VA ADVISORY
DTG: 20251205/2200Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1390
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL150 OBS AT 05/2140Z MOV S
OBS VA DTG: 05/2140Z
OBS VA CLD: SFC/FL150 S0800 E11251 – S0759 E11259 – S0821
E11309 – S0822 E11246 MOV S 05KT
FCST VA CLD +6 HR: 06/0340Z SFC/FL150 S0800 E11259 – S0824
E11312 – S0825 E11242 – S0800 E11251
FCST VA CLD +12 HR: 06/0940Z SFC/FL150 S0758 E11257 – S0822
E11310 – S0824 E11242 – S0758 E11247
FCST VA CLD +18 HR: 06/1540Z SFC/FL150 S0758 E11258 – S0825
E11310 – S0824 E11242 – S0758 E11248
RMK: VA OBSERVED ON LATEST SATELLITE IMAGERY. GROUND REPORTS
INDICATE DISCRETE VA EMISSIONS ARE ONGOING. VA HEIGHT AND
MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND
MODEL GUIDANCE. **CORRECTED FOR RMK TYPO**
NXT ADVISORY: NO LATER THAN 20251206/0400Z=