Volcanic Ash Advisory

Ibu

Sat, 16 May 2026 02:30:00 GMT

Raw Output

FVAU01 at 02:30 UTC, 16/05/26 from ADRM
VA ADVISORY
DTG: 20260516/0230Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/550
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 MOV W LAST REPORTED AT
        16/0137Z
EST VA DTG: 16/0210Z
EST VA CLD: SFC/FL070 N0128 E12740 - N0128 E12713 - N0142
        E12714 - N0131 E12740 MOV W 10KT
FCST VA CLD +6 HR: 16/0810Z SFC/FL070 N0128 E12740 - N0122
        E12714 - N0138 E12712 - N0131 E12740
FCST VA CLD +12 HR: 16/1410Z SFC/FL070 N0128 E12740 - N0122
        E12714 - N0138 E12712 - N0131 E12739
FCST VA CLD +18 HR: 16/2010Z SFC/FL070 N0128 E12740 - N0116
        E12722 - N0125 E12716 - N0137 E12718 - N0132 E12739
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
        CLOUD. RECENT GROUND REPORTS INDICATE INTERMITTENT DISCRETE
        ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON
        SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260516/0830Z=

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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