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. Original VAAC bulletin:
FVXX25 at 11:26 UTC, 27/09/26 from KNES VA ADVISORY DTG: 20260927/1124Z
RMK: VA EMS OBS IN STLT IMG UP TO APPRX 17NM FM SUMMIT. NWP MDL GUIDANCE FCSTS GEN W TO WNW MOVMT THRU T+18. HGT BASED ON MOVMT AND NWP MDLS. ...MONAGHAN
Weak volcanic ash emissions were reported at Nevados de Chillán as of 09:10 UTC on 27 September 2026, but no ash cloud was identifiable in satellite data. No further advisories are expected unless conditions change. Original VAAC bulletin:
FVAG01 at 09:45 UTC, 27/09/26 from SABM VA ADVISORY DTG: 20260927/0945Z
VAAC: BUENOS AIRES
VOLCANO: NEVADOS DE CHILLAN 357070 PSN: S3651 W07122
AREA: CHILE
SUMMIT ELEV: 10538 FT [3212 M]
ADVISORY NR: 2026/004
INFO SOURCE: SVO. GOES-E.
AVIATION COLOUR CODE: NOT GIVEN
ERUPTION DETAILS: WEAK VA EMS
OBS VA DTG: 27/0910Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA
FCST VA CLD +6 HR: 27/1510Z NO VA EXP
FCST VA CLD +12 HR: 27/2110Z NO VA EXP
FCST VA CLD +18 HR: 28/0310Z NO VA EXP
RMK: ALTHOUGHT SVO INFORMED VA EMS DETECTED THERE IS NO INDICATION OF VA IN STLT IMAGERY. WE WILL CONTINUE MONITORING AND ISSUE AN ADVISORY IF NECESSARY. ...SMN
An ash plume from Semeru was observed on webcam at 02:00 UTC on 27 September 2026, moving southeast. Forecasts indicate continued movement, but the ash was not identifiable on the latest satellite imagery. Original VAAC bulletin:
FVAU02 at 05:18 UTC, 27/09/26 from ADRM VA ADVISORY DTG: 20260927/0520Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S0806 E11255 AREA: INDONESIA SOURCE ELEV: 3657M AMSL ADVISORY NR: 2026/1106 INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM ERUPTION DETAILS: VA OBS ON WEBCAM AT 27/0200Z MOV SE EST VA DTG: 27/0500Z EST VA CLD: SFC/FL150 S0806 E11251 - S0802 E11255 - S0819 E11324 - S0833 E11324 - S0836 E11312 MOV SE 10KT FCST VA CLD +6 HR: 27/1100Z SFC/FL150 S0808 E11252 - S0802 E11253 - S0758 E11319 - S0811 E11324 - S0822 E11317 FCST VA CLD +12 HR: 27/1700Z SFC/FL150 S0807 E11251 - S0800 E11254 - S0801 E11320 - S0821 E11323 - S0826 E11306 FCST VA CLD +18 HR: 27/2300Z SFC/FL150 S0806 E11251 - S0801 E11255 - S0806 E11324 - S0827 E11324 - S0832 E11304 RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY. GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS ARE ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260927/1120Z=
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 20000 ft (6100 m), or flight level 200. Original VAAC bulletin:
FVXX25 at 23:44 UTC, 26/09/26 from KNES VA ADVISORY DTG: 20260926/2341Z
RMK: VA EMS OBS ON STLT MVG W APPRX 35 NM FM SUMMIT. VA PSBLY SEEN ON WEBCAM BETWEEN WX CLDS. A GEN W TO WSW MVMT EXP THRU T+18. FL AND FCST BASED ON NWP MDLS. ...EVANS
Etna (Sicily, Italy): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Toulouse warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150, and moving at 35 kts in S direction. Original VAAC bulletin:ash plume to 15,000 ft (4,600 m) as of Sep 26, 16:00 UTC
Sheveluch (Kamchatka): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 28000 ft (8500 m), or flight level 280, and moving at 50 kts in SE direction. Original VAAC bulletin:ash plume to 28,000 ft (8,500 m) as of Sep 26, 17:20 UTC
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 Sep 26, 15:54 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 10 kts in W direction. Original VAAC bulletin:ash plume to 7,000 ft (2,100 m) as of Sep 26, 10:47 UTC
Dukono (Halmahera): (26 Sep) 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 NE direction. Original VAAC bulletin:ash plume to 15,000 ft (4,600 m) as of Sep 26, 07:00 UTC
Popocatépetl (Central Mexico): (25 Sep) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 20000 ft (6100 m), or flight level 200. Original VAAC bulletin:ash plume to 20,000 ft (6,100 m) as of Sep 25, 21:01 UTC
Fuego (Guatemala): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin. Original VAAC bulletin:VA EMS ONGOING
Puracé (Colombia): Possible volcanic ash emissions were reported for Puracé, but no ash plume was observed on satellite or webcam as of 26 September 2026, 15:40 UTC. Forecasts indicate potential northwest movement of ash, with no ash expected after 27 September 2026, 03:30 UTC. Original VAAC bulletin:Puracé Volcanic Ash Advisory
Sangay (Ecuador): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin. Original VAAC bulletin:PSBL CONTG VA EMS.
Reventador (Ecuador): Possible ongoing volcanic ash emissions are reported for Reventador as of 11:00 UTC on 26 September 2026, but no ash plume was observed due to cloud cover. Forecasts indicate little change in ash movement through the next 12 hours. Original VAAC bulletin:Reventador Volcanic Ash Advisory
Nevados de Chillán (Central Chile): (26 Sep) Weak volcanic ash emissions were reported at Nevados de Chillán, but no ash cloud was detected in satellite imagery as of 26 September 2026, 05:30 UTC. No further advisories are expected. Original VAAC bulletin:no ash plume identifiable as of 26 Sep 2026, 05:30 UTC
