Mayon (Luzon Island, Philippines): (3 Oct) An eruption was reported at Mayon on 3 October 2026 at 00:04 UTC, but the ash cloud was not identifiable in satellite data as of 00:10 UTC. No ash plume height was observed or reported.
Original VAAC bulletin: ash cloud reported, height unknown as of 03 Oct 2026, 00:10 UTC
Manam (Papua New Guinea): (3 Oct) 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 Oct 3, 06:40 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, and moving at 15 kts in E direction.
Original VAAC bulletin: ash plume to 7,000 ft (2,100 m) as of Oct 3, 09:40 UTC
Semeru (East Java, Indonesia): An eruption was last reported at Semeru at 10:57 UTC on October 3, 2026. Ash height and movement are based on ground reports and model guidance, but no specific ash plume height was observed or confirmed in satellite imagery.
Original VAAC bulletin: Semeru Volcanic Ash Advisory
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 Oct 3, 12:20 UTC
Santiaguito (Guatemala): Volcanic ash emissions were observed at Santiaguito, with the latest observation at 03 October 2026, 13:40 UTC. Forecasts indicate ash cloud movement generally north to northwest through the next 12 hours.
Original VAAC bulletin: Santiaguito Volcanic Ash Advisory
Fuego (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140, and moving at 5 kts in N direction.
Original VAAC bulletin: ash plume to 14,000 ft (4,300 m) as of Oct 3, 16:10 UTC
Telica (Nicaragua): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin.
Original VAAC bulletin: LGT VA EMS OBS
Puracé (Colombia): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington 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 Oct 3, 17:30 UTC
Sangay (Ecuador): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 21000 ft (6400 m), or flight level 210.
Original VAAC bulletin: ash plume to 21,000 ft (6,400 m) as of Oct 3, 10:50 UTC
Reventador (Ecuador): Ongoing volcanic ash emissions are reported at Reventador. As of 03 October 2026 at 09:00 UTC, no ash plume height was observed due to weather clouds, but summit activity is visible on webcam and ash emissions are likely continuing.
Original VAAC bulletin: Reventador Volcanic Ash Advisory