Map of today's active volcanoesSakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20260118/2005Z FL090 EXTD E OBS VA DTG:18/2000ZMayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260118/1620Z VA CLD UNKNOWN REPORTED OBS VA DTG:18/1630ZIbu (Halmahera, Indonesia): (17 Jan) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .The full report is as follows: VA TO FL060 LAST REP AT 17/1450Z MOV E EST VA DTG:17/2300Z to 6000 ft (1800 m)Lewotolo (Lesser Sunda Islands): (18 Jan) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .The full report is as follows: VA TO FL060 REPORTED MOV ENE AT 18/0147Z EST VA DTG:18/0150Z to 6000 ft (1800 m)Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA ERUPTION LAST REPORTED AT 18/1750Z EST VA DTG:18/1840ZMarapi (Western Sumatra, Indonesia): (18 Jan) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 12000 ft (3700 m) altitude or flight level 120 .The full report is as follows: VA TO FL120 REPORTED MOV E OBS VA DTG:18/0410Z to 12000 ft (3700 m)Santiaguito (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .The full report is as follows: OCNL VA EM to 14000 ft (4300 m)Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .The full report is as follows: FQT SML VA EM to 14000 ft (4300 m)Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 .The full report is as follows: VA EMS REPORTED to 18000 ft (5500 m)Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .The full report is as follows: ONGOING VA EMS to 20000 ft (6100 m)Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING VA EMSPiton de la Fournaise (La Réunion): An new eruption started a few hours ago from several vents at the NW foot of the Dolomieu central cone in the Enclos area, marking the first eruption of the volcano since 2023.As of late evening 18 Jan 2026, a few hours into the eruption, at least 3 vents have opened spread along a fissure over approx. 500 distance. Webcam imagery shows lava fountains and several lava flows quickly traveling northeast. The eruption had been preceded by increased seismic activity and raised alert status since early January.Volcano Activity Summary for 18 Jan 2026: