Sangay Volcanic Ash Advisory: ash plume to 22,000 ft (6,700 m) as of Oct 4, 10:40 UTC

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 22000 ft (6700 m), or flight level 220, and moving at 10 kts in NW direction.
Original VAAC bulletin:

FVXX25 at 11:15 UTC, 04/10/26 from KNES
VA ADVISORY
DTG: 20261004/1113Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SOURCE ELEV: 17342 FT AMSL

ADVISORY NR: 2026/648

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: FREQUENT VA EMS

OBS VA DTG: 04/1040Z

OBS VA CLD: SFC/FL220 S0141 W07842 - S0143 W07840
- S0145 W07844 - S0143 W07846 - S0141 W07842 MOV
NW 10KT SFC/FL220 S0126 W07914 - S0128 W07911 -
S0132 W07915 - S0130 W07919 - S0126 W07914 MOV NW
10KT

FCST VA CLD +6HR: 04/1630Z SFC/FL220 S0134 W07832
- S0201 W07820 - S0201 W07820 - S0136 W07838 -
S0134 W07832

FCST VA CLD +12HR: 04/2230Z SFC/FL220 S0133
W07831 - S0201 W07820 - S0201 W07820 - S0135
W07837 - S0133 W07831

FCST VA CLD +18HR: 05/0430Z SFC/FL220 S0133
W07830 - S0201 W07820 - S0201 W07820 - S0134
W07835 - S0133 W07830

RMK: DISCRETE VA EMS OBS IN STLT IMG EXT APRX
70NM NW FM SUMMIT. NW MVMT EXP THRU T+18. FCST
BASED ON STLT AND MDL WINDS. ...GATLING

NXT ADVISORY: WILL BE ISSUED BY 20261004/1715Z

Dukono Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Oct 4, 06:40 UTC

Satellite image of Dukono volcano on 4 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070, and moving at 20 kts in E direction.
Original VAAC bulletin:

FVAU01 at 07:01 UTC, 04/10/26 from ADRM
VA ADVISORY
DTG: 20261004/0701Z
VAAC: DARWIN
VOLCANO: DUKONO 268010
PSN: N0142 E12754
AREA: INDONESIA
SOURCE ELEV: 1229M AMSL
ADVISORY NR: 2026/833
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: VA TO FL070 EXTD EAST
OBS VA DTG: 04/0640Z
OBS VA CLD: SFC/FL070 N0139 E12751 - N0145 E12750 - N0206
E12816 - N0159 E12917 - N0137 E12920 MOV E 20KT
FCST VA CLD +6 HR: 04/1240Z SFC/FL070 N0140 E12752 - N0140
E12752 - N0144 E12750 - N0204 E12802 - N0227 E12848 - N0217
E12913 - N0156 E12925 - N0135 E12925
FCST VA CLD +12 HR: 04/1840Z SFC/FL070 N0143 E12751 - N0204
E12802 - N0227 E12848 - N0217 E12912 - N0156 E12926 - N0136
E12925 - N0139 E12753
FCST VA CLD +18 HR: 05/0040Z SFC/FL070 N0144 E12751 - N0204
E12802 - N0226 E12848 - N0216 E12913 - N0157 E12926 - N0136
E12926 - N0139 E12752
RMK: CONTINUOUS VA ERUPTION IDENTIFIABLE ON VIS SATELLITE
IMAGERY. HEIGHT AND MOVEMENT BASED ON RECENT SATELLITE
IMAGERY AND MODEL GUIDANCE.**ADV UPDATED**
NXT ADVISORY: NO LATER THAN 20261004/1301Z=

Ibu Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Oct 4, 03:40 UTC

Satellite image of Ibu volcano on 4 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070.
Original VAAC bulletin:

FVAU03 at 03:59 UTC, 04/10/26 from ADRM
VA ADVISORY
DTG: 20261004/0400Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1125
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL070 MOV E
OBS VA DTG: 04/0340Z
OBS VA CLD: SFC/FL070 N0126 E12737 - N0132 E12735 - N0151
E12814 - N0133 E12823 - N0119 E12818 MOV E 10KT
FCST VA CLD +6 HR: 04/0940Z SFC/FL070 N0126 E12737 - N0132
E12736 - N0152 E12816 - N0136 E12823 - N0117 E12819
FCST VA CLD +12 HR: 04/1540Z SFC/FL070 N0126 E12737 - N0132
E12736 - N0151 E12816 - N0135 E12823 - N0119 E12818
FCST VA CLD +18 HR: 04/2140Z SFC/FL070 N0131 E12736 - N0151
E12816 - N0135 E12823 - N0119 E12818 - N0126 E12737
RMK: NTERMITTENT ERUPTIONS IDENTIFIABLE ON SATELLITE
IMAGERY. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY,
GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261004/1000Z=

Lewotolo Volcanic Ash Advisory: ash plume to 6,000 ft (1,800 m) as of Oct 4, 01:00 UTC

Satellite image of Lewotolo volcano on 4 Oct 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 6000 ft (1800 m), or flight level 060.
Original VAAC bulletin:

FVAU04 at 01:33 UTC, 04/10/26 from ADRM
VA ADVISORY
DTG: 20261004/0141Z
VAAC: DARWIN
VOLCANO: LEWOTOLOK 264230
PSN: S0816 E12330
AREA: INDONESIA
SOURCE ELEV: 1423M AMSL
ADVISORY NR: 2026/306
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL060 MOV NW
OBS VA DTG: 04/0100Z
OBS VA CLD: SFC/FL060 S0818 E12331 - S0759 E12249 - S0744
E12259 - S0816 E12333 MOV NW 15KT
FCST VA CLD +6 HR: 04/0700Z SFC/FL060 S0819 E12331 - S0801
E12246 - S0737 E12303 - S0816 E12333
FCST VA CLD +12 HR: 04/1300Z SFC/FL060 S0819 E12330 - S0800
E12246 - S0737 E12303 - S0816 E12333
FCST VA CLD +18 HR: 04/1900Z SFC/FL060 S0818 E12331 - S0801
E12247 - S0737 E12303 - S0816 E12333
RMK: INTERMITTENT DISCRETE ERUPTION IDENTIFIABLE ON
SATELLITE IMAGERY. HEIGHT AND MOVEMENT BASED ON SATELLITE
IMAGERY, GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20261004/0741Z=