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Map of today's active volcanoes

Sakurajima (Kyushu, Japan): (31 Aug) The Volcanic Ash Advisory Center (VAAC) Tokyo issued the following bulletin.
Original VAAC bulletin: ERUPTED AT 20260831/0730Z FL080 EXTD NW OBS VA DTG: 31/0730Z

Ibu (Halmahera, Indonesia): 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: ash plume to 7,000 ft (2,100 m) as of Aug 31, 15:50 UTC

Sinabung (Sumatra, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 17000 ft (5200 m), or flight level 170.
Original VAAC bulletin: ash plume to 17,000 ft (5,200 m) as of Aug 31, 10:30 UTC

Lewotobi (Flores): (31 Aug) 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: ash plume to 6,000 ft (1,800 m) as of Aug 31, 05:22 UTC

Lewotolo (Lesser Sunda Islands): 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 15 kts in W direction.
Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Aug 31, 18:37 UTC
…31 Aug:
The activity at the volcano has been very intense over the past weeks, as the group of an ongoing expeditions to Flores observed:

Strombolian to vulcanian type explosions occurred on average every 5-15 minutes, ejecting abundant incandescent material and ash plumes that rose approx. 200 – 800 m above the summit crater. Loud explosion sounds accompanied the eruptions.
…31 Aug:
The elevated eruptive activity at the volcano continues.

The lava flow started to ooze out onto the northeastern slope this time, as the main source of lava is being generated from the cinder cone. Most of the lava occupies the main caldera, from which different branches fall over steep caldera slopes.

Vulcanian-to-strombolian-type explosions produce ash plumes reaching an approx. altitude of 6,000 ft (1,800 m) that propagate to the west of the volcano.
…31 Aug:
The elevated eruptive activity at the volcano continues.

A lava flow started to ooze out onto the northeastern slope. The source of the lava flow remains a vent at the central cinder cone. Most of the summit caldera is being covered by fresh lava flows, from which different branches fall over the steep outer slopes.

Vulcanian-to-strombolian-type explosions produce ash plumes reaching an approx. altitude of 6,000 ft (1,800 m) that propagate to the west of the volcano.

Krakatau (Sunda Strait, Indonesia): (31 Aug) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 3000 ft (900 m), or flight level 030, and moving at 05 kts in W direction.
Original VAAC bulletin: ash plume to 3,000 ft (900 m) as of Aug 30, 23:33 UTC

Semeru (East Java, Indonesia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.
Original VAAC bulletin: ash plume to 15,000 ft (4,600 m) as of Aug 31, 15:30 UTC

Dukono (Halmahera): 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 10 kts in NE direction.
Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Aug 31, 16:10 UTC

Aoba (Vanuatu): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 41000 ft (12500 m), or flight level 410, and moving at 05 kts in N direction.
Original VAAC bulletin: ash plume to 41,000 ft (12,500 m) as of Aug 31, 15:59 UTC

Fuego (Guatemala): Ongoing volcanic ash emissions have been observed at Fuego as of August 31, 2026. Forecasts indicate continued ash presence up to FL140 over the next 18 hours.
Original VAAC bulletin: Fuego Volcanic Ash Advisory

Puracé (Colombia): Possible volcanic ash emissions were reported at Puracé, but no ash was currently observed in satellite imagery or webcam as of August 31, 2026, 16:22 UTC. Forecasts indicate potential ash movement westward over the next 18 hours.
Original VAAC bulletin: Puracé Volcanic Ash Advisory

Reventador (Ecuador): Ongoing volcanic ash emissions were reported for Reventador. Ash was not observed in satellite imagery due to partial cloud cover, but recent emissions were seen on webcam. Forecasts indicate little change in ash movement through the next 18 hours.
Original VAAC bulletin: Reventador Volcanic Ash Advisory

Volcano Activity Summary for 31 Aug 2026:

Ongoing volcanic ash emissions have been observed at Fuego as of August 31, 2026. Forecasts indicate continued ash presence up to FL140 over the next 18 hours.
Original VAAC bulletin:

FVXX20 at 16:56 UTC, 31/08/26 from KNES
VA ADVISORY
DTG: 20260831/1655Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2026/1022

INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: ONGOING VA EMS

EST VA DTG: 31/1630Z

EST VA CLD: SFC/FL140 N1435 W09105 - N1429 W09052
- N1427 W09052 - N1428 W09106 - N1435 W09105 MOV
W 20KT 

FCST VA CLD +6HR: 31/2230Z SFC/FL140 N1430 W09111
- N1429 W09052 - N1428 W09052 - N1422 W09108 -
N1430 W09111 

FCST VA CLD +12HR: 01/0430Z SFC/FL140 N1430
W09110 - N1429 W09052 - N1427 W09052 - N1420
W09108 - N1430 W09110 

FCST VA CLD +18HR: 01/1030Z SFC/FL140 N1436
W09106 - N1429 W09052 - N1427 W09052 - N1426
W09107 - N1436 W09106 

RMK: VA EMS OBS IN WEBCAM BUT STLT IMAGERY
REMAINS OBSCD BY WX CLDS. VA FCST THRU T+18 HRS
BASED ON NWP MDL GUIDANCE. ...COVERDALE

NXT ADVISORY: WILL BE ISSUED BY 20260831/2300Z

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 17000 ft (5200 m), or flight level 170.
Original VAAC bulletin:

FVAU06 at 10:49 UTC, 31/08/26 from ADRM
VA ADVISORY
DTG: 20260831/1050Z
VAAC: DARWIN
VOLCANO: SINABUNG 261080
PSN: N0310 E09824
AREA: INDONESIA
SOURCE ELEV: 2460M AMSL
ADVISORY NR: 2026/5
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA OBS TO FL170 OBS AT 31/1020Z MOV E
OBS VA DTG: 31/1030Z
OBS VA CLD: SFC/FL170 N0304 E09817 - N0324 E09817 - N0352
 E09909 - N0331 E10015 - N0241 E09956 MOV E 10KT
FCST VA CLD +6 HR: 31/1630Z SFC/FL170 N0304 E09818 - N0324
 E09816 - N0346 E09907 - N0322 E10012 - N0232 E09952
FCST VA CLD +12 HR: 31/2230Z SFC/FL170 N0305 E09818 - N0324
 E09817 - N0345 E09907 - N0322 E10011 - N0232 E09952
FCST VA CLD +18 HR: 01/0430Z SFC/FL170 N0304 E09817 - N0324
 E09817 - N0344 E09906 - N0322 E10011 - N0232 E09952
RMK: VA HEIGHT AND MOVEMENT BASED ON GROUND REPORT,
 HIMAWARI-9 IMAGERY AND MODEL GUIDANCE. PREVIOUS ADVISORY
 UPDATED DUE TO ERROR IN OBS TIME.
NXT ADVISORY: NO LATER THAN 20260831/1650Z=