Map of today's active volcanoesKirishima (Kyushu): (21 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: POSS ACTIVITY CONT. VA CLD UNKNOWN AT 20250721/0600ZLewotolo (Lesser Sunda Islands): 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 and is moving at 10 kts in NW direction.The full report is as follows: VA TO FL060 LAST REPORTED AT 21/1119Z EST VA DTG:21/1400Z to 6000 ft (1800 m)Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 21/1029Z EST VA DTG:21/1040ZPopocatépetl (Central Mexico): 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: LIGHT VA EMS DTCTD to 20000 ft (6100 m)Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LGT VA EMS PSBLTelica (Nicaragua): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 5000 ft (1500 m) altitude or flight level 050 .The full report is as follows: LGT VA EMS OBS to 5000 ft (1500 m)Nevado del Ruiz (Colombia): (21 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 and is moving at 20 kts in W direction.The full report is as follows: CONT VA EMS OBS to 22000 ft (6700 m)Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS PSBL OBSReventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .The full report is as follows: VA EMS OBS to 15000 ft (4600 m)Volcano Activity Summary for 21 Jul 2025: