Klyuchevskoy (Kamchatka): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 18000 ft (5500 m), or flight level 180, and moving at 20 kts in NE direction.
Original VAAC bulletin: ash plume to 18,000 ft (5,500 m) as of Aug 21, 20:00 UTC
…21 Aug:
The eruption at the volcano is ongoing.
Dense ash emissions continue to rise from the summit and propagate to the southeast of the volcano.
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 21, 19:50 UTC
Lewotolo (Lesser Sunda Islands): (21 Aug) The effusive eruption at the volcano continues.
The lava flow continues to advance from the summit cinder cone towards the southern flank, currently about 1,400 meters, as visible in the satellite imagery from 20 August.
Krakatau (Sunda Strait, 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 21, 18:10 UTC
Semeru (East Java, Indonesia): (21 Aug) 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 21, 04:00 UTC
Dukono (Halmahera): (21 Aug) Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 8000 ft (2400 m), or flight level 080.
Original VAAC bulletin: ash plume to 8,000 ft (2,400 m) as of Aug 21, 04:20 UTC
Santiaguito (Guatemala): Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington 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 21, 09:20 UTC
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.
Original VAAC bulletin: ash plume to 14,000 ft (4,300 m) as of Aug 21, 19:10 UTC
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 Aug 21, 18:30 UTC
Reventador (Ecuador): 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 Aug 21, 10:50 UTC
Sabancaya (Peru): (21 Aug) No volcanic ash emissions were observed from Sabancaya as of 02:15 UTC on 21 August 2026. Satellite and webcam data under clear skies did not identify any ash, and no further advisories are expected.
Original VAAC bulletin: no ash plume observed as of 21 Aug 2026, 02:15 UTC