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:
FVAU04 at 22:33 UTC, 25/09/26 from ADRM VA ADVISORY DTG: 20260925/2250Z VAAC: DARWIN VOLCANO: LEWOTOLOK 264230 PSN: S0816 E12330 AREA: INDONESIA SOURCE ELEV: 1423M AMSL ADVISORY NR: 2026/279 INFO SOURCE: HIMAWARI-9, CVGHM ERUPTION DETAILS: VA TO FL070 OBS AT AT 25/2230Z MOV NW EST VA DTG: 25/2230Z EST VA CLD: SFC/FL070 S0815 E12332 - S0818 E12331 - S0818 E12307 - S0802 E12313 MOV NW 10KT FCST VA CLD +6 HR: 26/0430Z SFC/FL070 S0815 E12332 - S0818 E12331 - S0818 E12307 - S0801 E12313 FCST VA CLD +12 HR: 26/1030Z SFC/FL070 S0818 E12332 - S0820 E12306 - S0800 E12313 - S0815 E12333 FCST VA CLD +18 HR: 26/1630Z SFC/FL070 S0818 E12332 - S0820 E12306 - S0800 E12313 - S0815 E12333 RMK: VA IDENTIFIABLE ON LATEST SATELLITE IMAGERY MOV NW. REGULAR GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260926/0450Z=
Etna (Sicily, Italy): An eruption with ongoing ash emission was reported at Etna, with the latest observation at 10:00 UTC on 25 September 2026. No ash plume height was observed or reported; forecasts indicate continued ash presence. Original VAAC bulletin:ongoing ash emission as of 25 Sep 2026, 10:00 UTC
Sheveluch (Kamchatka): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 38000 ft (11600 m), or flight level 380, and moving at 35 kts in W direction. Original VAAC bulletin:ash plume to 38,000 ft (11,600 m) as of Sep 25, 18:20 UTC
Sakurajima (Kyushu, Japan): An eruption was reported at Sakurajima at 12:36 UTC on 25 September 2026, but no volcanic ash cloud was identifiable in satellite data as of 12:30 UTC. No forecast information is available. Original VAAC bulletin:no ash plume identifiable as of 25 Sep 2026, 12:30 UTC
Lewotolo (Lesser Sunda Islands): (25 Sep) 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 NW direction. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Sep 25, 04:50 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, and moving at 05 kts in SE direction. Original VAAC bulletin:ash plume to 15,000 ft (4,600 m) as of Sep 25, 17:15 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. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Sep 25, 14:20 UTC
Santiaguito (Guatemala): (25 Sep) The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin. Original VAAC bulletin:NO VA EMS
Fuego (Guatemala): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin. Original VAAC bulletin:VA EMS CONT
Sangay (Ecuador): Possible volcanic ash emissions were reported for Sangay, but no ash plume was observed in satellite imagery as of 25 September 2026, 18:10 UTC. Forecasts indicate little change in ash cloud movement and height over the next 6 hours. Original VAAC bulletin:Sangay Volcanic Ash Advisory
Reventador (Ecuador): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 16000 ft (4900 m), or flight level 160. Original VAAC bulletin:ash plume to 16,000 ft (4,900 m) as of Sep 25, 11:30 UTC
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:
FVAU01 at 14:20 UTC, 25/09/26 from ADRM VA ADVISORY DTG: 20260925/1430Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N0142 E12754 AREA: INDONESIA SOURCE ELEV: 1229M AMSL ADVISORY NR: 2026/796 INFO SOURCE: HIMAWARI-9 ERUPTION DETAILS: VA TO FL070 OBS AT 25/0940Z EST VA DTG: 25/1410Z EST VA CLD: SFC/FL070 N0115 E12806 - N0117 E12716 - N0205 E12638 - N0253 E12706 - N0256 E12813 - N0205 E12848 MOV N 05KT FCST VA CLD +6 HR: 25/2010Z SFC/FL070 N0130 E12758 - N0130 E12741 - N0239 E12712 - N0248 E12818 - N0205 E12911 FCST VA CLD +12 HR: 26/0210Z SFC/FL070 N0128 E12754 - N0133 E12743 - N0235 E12719 - N0250 E12818 - N0211 E12908 FCST VA CLD +18 HR: 26/0810Z SFC/FL070 N0130 E12757 - N0139 E12734 - N0235 E12716 - N0257 E12803 - N0211 E12903 RMK: VA UNIDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. HOWEVER VA IS STILL EXPECTED IN THE AREA. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260925/2030Z=
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 16000 ft (4900 m), or flight level 160. Original VAAC bulletin:
FVXX21 at 11:55 UTC, 25/09/26 from KNES VA ADVISORY DTG: 20260925/1153Z
VAAC: WASHINGTON
VOLCANO: REVENTADOR 352010 PSN: S0005 W07739
AREA: ECUADOR
SOURCE ELEV: 11686 FT AMSL
ADVISORY NR: 2026/992
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS. GEOPHYSICAL INST.
