Sakurajima (Kyushu, Japan): (17 Oct) An eruption was reported at Sakurajima at 01:55 UTC on 17 October 2026, but volcanic ash was not identifiable in satellite data as of 01:50 UTC. No forecast ash cloud information is available.
Original VAAC bulletin: Sakurajima Volcanic Ash Advisory
Mayon (Luzon Island, Philippines): (17 Oct) An eruption was reported at Mayon at 03:05 UTC, with volcanic ash observed as of 03:10 UTC. No ash cloud was identifiable in satellite data at that time; forecasts are not available.
Original VAAC bulletin: eruption reported as of 03:10 UTC
Ibu (Halmahera, Indonesia): 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, and moving at 05 kts in N direction.
Original VAAC bulletin: ash plume to 6,000 ft (1,800 m) as of Oct 17, 19:00 UTC
Semeru (East Java, Indonesia): An eruption was reported at Semeru at 14:51 UTC on October 17. Ash movement toward the west at 10 knots is estimated, but the ash cloud height was not observed; forecasts indicate continued activity.
Original VAAC bulletin: Semeru Volcanic Ash Advisory
Dukono (Halmahera): (16 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 16, 22:50 UTC
White Island (New Zealand): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Wellington warned of a volcanic ash plume rising to an estimated 3000 ft (900 m), or flight level 030, and moving at 15 kts in N direction.
Original VAAC bulletin: ash plume to 3,000 ft (900 m) as of Oct 17, 11:28 UTC
Kilauea (Hawai’i): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 25000 ft (7600 m), or flight level 250.
Original VAAC bulletin: ash plume to 25,000 ft (7,600 m) as of Oct 17, 15:01 UTC
…17 Oct:
The long-awaited 55th episode of lava fountaining in Halemaʻumaʻu summit crater began a short time ago, at 3:19 AM HST local time on October 17, 2026.
Fountain heights were initially relatively low at about 100-150 feet (30-45 m), but have since increased greatly.
Continuous overflows from the vents began yesterday, October 16, just before 6 a.m. HST and transitioned into episode 55 fountains at 3:19 a.m. HST this morning. The current forecast is for winds blowing from the north-northeast direction, which suggests that volcanic gas emissions and volcanic material may be distributed to the south-southwest direction from Halemaʻumaʻu.
Santiaguito (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.
Original VAAC bulletin: ash plume to 14,000 ft (4,300 m) as of Oct 17, 11:50 UTC
Fuego (Guatemala): The Washington VAAC reports that volcanic ash emissions from Fuego are likely continuing as of October 17, 2026, 19:38 UTC, but no ash plume height was observed due to meteorological cloud cover. Forecasts indicate possible continued ash presence and movement.
Original VAAC bulletin: Fuego Volcanic Ash Advisory
Puracé (Colombia): The Volcanic Ash Advisory Center (VAAC) Washington issued the following bulletin.
Original VAAC bulletin: VA EM DETECTED
Sangay (Ecuador): Possible volcanic ash emissions were reported for Sangay, but no ash plume was observed on satellite or webcam as of October 17, 2026, 14:00 UTC. Forecasts indicate potential west-northwest movement of ash, with no ash expected after 02:00 UTC on October 18.
Original VAAC bulletin: Sangay Volcanic Ash Advisory
Reventador (Ecuador): A possible volcanic ash emission was reported for Reventador. Ash cloud height could not be observed due to weather conditions; forecasts indicate possible ash up to FL150 moving west as of October 17, 2026, 16:30 UTC.
Original VAAC bulletin: Reventador Volcanic Ash Advisory
Nevados de Chillán (Central Chile): (17 Oct) Sporadic puff emissions were reported at Nevados de Chillán. Ash was not identifiable in satellite data, but light emissions were seen on webcam as of October 17, 2026, 01:20 UTC.
Original VAAC bulletin: Nevados de Chillán Volcanic Ash Advisory