Volcanic Ash Advisory
Ibu
Wed, 08 Apr 2026 14:30:00 GMT
Raw Output
FVAU01 at 14:24 UTC, 08/04/26 from ADRM
VA ADVISORY
DTG: 20260408/1430Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/400
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 REP FM GND AT 08/0423Z
EST VA DTG: 08/1410Z
EST VA CLD: SFC/FL070 N0132 E12738 - N0113 E12804 - N0101
E12759 - N0100 E12745 - N0130 E12735 MOV SE 10KT
FCST VA CLD +6 HR: 08/2010Z SFC/FL070 N0130 E12735 - N0133
E12739 - N0113 E12804 - N0058 E12756 - N0058 E12741
FCST VA CLD +12 HR: 09/0210Z SFC/FL070 N0129 E12735 - N0133
E12738 - N0124 E12809 - N0111 E12804 - N0104 E12754
FCST VA CLD +18 HR: 09/0810Z SFC/FL070 N0128 E12734 - N0133
E12738 - N0122 E12807 - N0104 E12800 - N0102 E12741
RMK: VA OBSCURED BY MET CLOUD ON LATEST SATELLITE IMAGERY.
GROUND REPORTS INDICATE ERUPTIONS ARE ONGOING. VA HEIGHT AND
MOVEMENT BASED ON SAT OBS, GROUND REPORT AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260408/2030Z=
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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