Map of today's active volcanoesKlyuchevskoy (Kamchatka): (31 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.Shiveluch (Kamchatka): (31 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 12000 ft (3700 m) altitude or flight level 120 and is moving at 10 kts in E direction.The full report is as follows: POSS ERUPTION OBS AT 20250731/0000Z FL120 EXTD E OBS VA DTG:31/0110Z to 12000 ft (3700 m)Kirishima (Kyushu): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20250731/1950Z FL050 EXTD W OBS VA DTG:31/2000ZIbu (Halmahera, Indonesia): (31 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .The full report is as follows: VA TO FL070 REPORTED AT 30/1232Z OBS VA DTG:31/0410Z to 7000 ft (2100 m)Marapi (Western Sumatra, Indonesia): (31 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 11000 ft (3400 m) altitude or flight level 110 and is moving at 05 kts in SE direction.The full report is as follows: VA REPORTED TO FL110 AT 31/0041Z OBS VA DTG:31/0100Z to 11000 ft (3400 m)Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA LAST REPORTED TO FL060 AT 31/0344Z EST VA DTG:31/1750ZSantiaguito (Guatemala): Mild explosive activity continues from the volcano. The Volcanic Ash Advisory Center (VAAC) Washington reported intermittent emissions of volcanic ash plumes.The full report is as follows: sporadic emissions of volcanic ashNevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 .The full report is as follows: VA EMS OBS to 19000 ft (5800 m)Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: OCNL VA EMSReventador (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: OCNL VA EMS to 15000 ft (4600 m)Barren Island (Indian Ocean): (31 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 10 kts in NE direction.The full report is as follows: VA OBS TO FL070 AT 31/0410Z OBS VA DTG:31/0410Z to 7000 ft (2100 m)