Global Volcanic Ash Advisories Issued for November 2026
Volcanic ash plumes from active volcanoes prompted aviation warnings on November 9, 2026, Volcano Discovery reported.
Karangetang on Siau Island in Indonesia produced an ash plume reaching 10,000 feet at 11:14 UTC, moving toward the northwest, according to a ground report cited by Volcano Discovery. The Volcanic Ash Advisory Center expected the cloud to dissipate within six hours.
Explosive activity continued at Ibu on Halmahera, where VAAC Darwin warned of a volcanic ash plume rising to an estimated 7,000 feet and moving northwest at 10 knots.
Semeru in East Java erupted at 0812 UTC on November 9, with ash movement estimated toward the southwest at 15 knots by 1100 UTC, though satellite imagery could not identify the cloud. In Guatemala, both Santiaguito and Fuego generated ash plumes reaching 14,000 feet, according to advisories from VAAC Washington.
Volcanic ash emissions reported across South America and globally
Puracé in Colombia recorded volcanic ash emissions, though no plume height was observed by the 0954 UTC advisory, with forecasts indicating movement toward the west-southwest. Sangay and Reventador in Ecuador reported ongoing emissions, though weather clouds obscured satellite observation of plume heights at Reventador.
Nevados de Chillán in Central Chile showed no volcanic ash emissions as of 0200 UTC on November 9, with satellite data identifying no ash cloud. Other volcanoes globally, including Ambrym in Vanuatu and Etna in Italy, remained under observation for eruptive activity and emissions.
Questions about volcano ash plumes and emissions
Which volcanoes produced the highest ash plumes on November 9?
Santiaguito and Fuego in Guatemala recorded the highest observed ash plumes of the day, both reaching an estimated 14,000 feet, according to advisories from VAAC Washington.
How long is the Karangetang ash cloud expected to persist?
The Volcanic Ash Advisory Center expected the 10,000-foot ash plume from Karangetang to dissipate within six hours of its 11:14 UTC observation.
Were any ash emissions detected at Nevados de Chillán?
Satellite data did not identify any ash cloud from Nevados de Chillán as of 0200 UTC on November 9, and forecasters expected no ash emissions in subsequent hours.
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