An ash plume from Semeru was observed on webcam at 02:00 UTC on 27 September 2026, moving southeast. Forecasts indicate continued movement, but the ash was not identifiable on the latest satellite imagery.
Original VAAC bulletin:
FVAU02 at 05:18 UTC, 27/09/26 from ADRM
VA ADVISORY
DTG: 20260927/0520Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1106
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA OBS ON WEBCAM AT 27/0200Z MOV SE
EST VA DTG: 27/0500Z
EST VA CLD: SFC/FL150 S0806 E11251 - S0802 E11255 - S0819
E11324 - S0833 E11324 - S0836 E11312 MOV SE 10KT
FCST VA CLD +6 HR: 27/1100Z SFC/FL150 S0808 E11252 - S0802
E11253 - S0758 E11319 - S0811 E11324 - S0822 E11317
FCST VA CLD +12 HR: 27/1700Z SFC/FL150 S0807 E11251 - S0800
E11254 - S0801 E11320 - S0821 E11323 - S0826 E11306
FCST VA CLD +18 HR: 27/2300Z SFC/FL150 S0806 E11251 - S0801
E11255 - S0806 E11324 - S0827 E11324 - S0832 E11304
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY. GROUND
REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT
AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260927/1120Z=