Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 and is moving at 10 kts in E direction.
The full report is as follows:
FVAU02 at 00:59 UTC, 17/12/25 from ADRM
VA ADVISORY
DTG: 20251217/0100Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1435
INFO SOURCE: CVGHM, HIMAWARI-9, WEBCAM
ERUPTION DETAILS: VA LAST REPORTED AT 17/0031Z
OBS VA DTG: 17/0040Z
OBS VA CLD: SFC/FL140 S0809 E11251 – S0801 E11252 – S0754
E11322 – S0818 E11320 MOV E 10KT
FCST VA CLD +6 HR: 17/0640Z SFC/FL140 S0808 E11251 – S0801
E11252 – S0758 E11322 – S0821 E11319
FCST VA CLD +12 HR: 17/1240Z SFC/FL140 S0808 E11251 – S0801
E11253 – S0802 E11323 – S0824 E11317
FCST VA CLD +18 HR: 17/1840Z SFC/FL140 S0808 E11250 – S0801
E11253 – S0807 E11324 – S0826 E11317
RMK: WEAK VA EMISSIONS OBS ON SATELLITE MOVING E TO NE.
GROUND REPORTS INDICATE INTERMITTENT DISCRETE EMISSIONS
REMAIN ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND
REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251217/0700Z=