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Volcanic Ash Advisory Center Darwin (VAAC) issued the following report:

FVAU04 at 02:08 UTC, 16/04/26 from ADRM
VA ADVISORY
DTG: 20260416/0208Z
VAAC: DARWIN
VOLCANO: MARAPI 261140
PSN: S0023 E10028
AREA: INDONESIA
SOURCE ELEV: 2885M AMSL
ADVISORY NR: 2026/59
INFO SOURCE: CVGHM
ERUPTION DETAILS: VA REPORTED TO FL150 AT 16/0143Z
EST VA DTG: 16/0150Z
EST VA CLD: SFC/FL150 S0027 E10026 – S0021 E10023 – S0011
E10032 – S0024 E10041 MOV NE 05KT
FCST VA CLD +6 HR: 16/0750Z NO VA EXP
FCST VA CLD +12 HR: 16/1350Z NO VA EXP
FCST VA CLD +18 HR: 16/1950Z NO VA EXP
RMK: GRND RPT AND PHOTO OF ERUPTION TO APPROX 1600M ABOVE
SUMMIT AT 16/0143Z. AREA CURRENTLY OBCURED BY MET CLOUD SO
IDENTIFICATION OF PLUME NOT POSSIBLE, ESTIMATED BASED ON
GROUND REPORT AND MODEL GUIDANCE. DISCRETE VA ASSUMED,
LIKELY TO DISSIPATE WITHIN 6HR.
NXT ADVISORY: NO LATER THAN 20260416/0808Z=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows:

FVAU01 at 00:08 UTC, 16/04/26 from ADRM
VA ADVISORY
DTG: 20260416/0010Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/430
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 OBS AT 15/2350 MOV E
OBS VA DTG: 15/2350Z
OBS VA CLD: SFC/FL070 N0127 E12736 – N0132 E12735 – N0146
E12811 – N0136 E12816 – N0125 E12815 MOV E 15KT
FCST VA CLD +6 HR: 16/0550Z SFC/FL070 N0127 E12734 – N0134
E12735 – N0141 E12810 – N0131 E12814 – N0119 E12809
FCST VA CLD +12 HR: 16/1150Z SFC/FL070 N0126 E12735 – N0134
E12735 – N0144 E12811 – N0134 E12815 – N0124 E12813
FCST VA CLD +18 HR: 16/1750Z SFC/FL070 N0127 E12735 – N0134
E12734 – N0145 E12808 – N0133 E12812 – N0123 E12811
RMK: REGULAR DISCRETE VA IDENTIFIABLE ON ANIMATED SAT IMG
BENEATH MET CLOUD. VA HEIGHT AND MOVEMENT BASED ON GROUND
REPORTS, SAT IMG AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260416/0610Z=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 05 kts in NE direction.
The full report is as follows:

FVAU04 at 19:15 UTC, 15/04/26 from ADRM
VA ADVISORY
DTG: 20260415/1920Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/47
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 LAST REP AT 15/1126Z
EST VA DTG: 15/1900Z
EST VA CLD: SFC/FL070 S0836 E12247 – S0833 E12242 – S0822
E12243 – S0823 E12251 – S0829 E12257 MOV NE 05KT
FCST VA CLD +6 HR: 16/0100Z SFC/FL070 S0835 E12249 – S0835
E12243 – S0824 E12239 – S0821 E12248 – S0827 E12257
FCST VA CLD +12 HR: 16/0700Z SFC/FL070 S0836 E12249 – S0836
E12243 – S0826 E12237 – S0822 E12245 – S0825 E12253
FCST VA CLD +18 HR: 16/1300Z SFC/FL070 S0835 E12245 – S0831
E12236 – S0823 E12239 – S0823 E12250 – S0833 E12250
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD AND DARKNESS. DISCRETE, INTERMITTENT ERUPTIONS ARE
EXPECTED TO BE ONGOING. VA HEIGHT AND MOVEMENT BASED ON
GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260416/0120Z=