Volcanic Ash Advisory
Ibu
Wed, 30 Sep 2026 22:10:00 GMT
Raw Output
FVAU03 at 22:05 UTC, 30/09/26 from ADRM
VA ADVISORY
DTG: 20260930/2210Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1112
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA ERUPTION OBS AT 30/2150Z MOV E
OBS VA DTG: 30/2150Z
OBS VA CLD: SFC/FL070 N0132 E12734 - N0149 E12748 - N0135
E12805 - N0112 E12758 - N0125 E12734 MOV E 05KT
FCST VA CLD +6 HR: 01/0350Z SFC/FL070 N0123 E12736 - N0128
E12732 - N0201 E12741 - N0152 E12808 - N0119 E12806
FCST VA CLD +12 HR: 01/0950Z SFC/FL070 N0123 E12738 - N0132
E12730 - N0157 E12757 - N0146 E12815 - N0125 E12802
FCST VA CLD +18 HR: 01/1550Z SFC/FL070 N0132 E12733 - N0151
E12814 - N0139 E12833 - N0121 E12821 - N0124 E12734
RMK: VA EMISSIONS OBS ON LATEST SATELLITE IMAGERY. REGULAR
GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING.
HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND
REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261001/0410Z=
Ibu
Indonesia
Level 4
The truncated summit of Gunung Ibu stratovolcano along the NW coast of Halmahera Island has large nested summit craters. The inner crater, 1 km wide and 400 m deep, has contained several small crater lakes. The 1.2-km-wide outer crater is breached on the N, creating a steep-walled valley. A large cone grew ENE of the summit, and a smaller one to the WSW has fed a lava flow down the W flank. A group of maars is located below the N and W flanks. The first observed and recorded eruption was a small explosion from the summit crater in 1911. Eruptive activity began again in December 1998, producing a lava dome that eventually covered much of the floor of the inner summit crater along with ongoing explosive ash emissions.
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