The Volcanic Ash Advisory Center (VAAC) Darwin issued the following bulletin.
Original VAAC bulletin:
FVAU05 at 16:04 UTC, 26/09/26 from ADRM
VA ADVISORY
DTG: 20260926/1604Z
VAAC: DARWIN
VOLCANO: MARAPI 261140
PSN: S0023 E10028
AREA: INDONESIA
SOURCE ELEV: 2885M AMSL
ADVISORY NR: 2026/79
INFO SOURCE: VONA
ERUPTION DETAILS: ERUPTION REPORTED AT 26/1440Z
EST VA DTG: 26/1540Z
EST VA CLD: SFC/FL120 S0027 E10025 - N0000 E10000 - N0008
E10040 - S0025 E10033 MOV N 05KT
FCST VA CLD +6 HR: 26/2140Z NO VA EXP
FCST VA CLD +12 HR: 27/0340Z NO VA EXP
FCST VA CLD +18 HR: 27/0940Z NO VA EXP
RMK: GROUND OBSERVER REPORTING ERUPTION OF UNKNOWN HEIGHT AT
26/1440Z. VA UNIDENTIFIABLE ON SATELLITE DUE TO OBSCURATION
BY MET CLOUD. HEIGHT BASED ON RECENT ERUPTIVE BEHAVIOUR.
MOVEMENT BASED ON MODEL GUIDANCE. VA EXPECTED TO DISSIPATE
WITHIN 6 HOURS.
NXT ADVISORY: NO LATER THAN 20260926/2204Z=