Map of today's active volcanoesKatla (Southern Iceland): (9 Jun) An article on mbl.is reports that unusually strong earthquake activity at Katla volcano may indicate the system is close to a critical stress threshold.Geophysicist Halldór Geirsson said one possible interpretation is that Katla is “in many ways close to its expansion limits,” meaning that even small changes in magma volume could trigger increased earthquake activity in different parts of the volcano. ... [read more] ... [show less] Katla, located beneath the Mýrdalsjökull ice cap in southern Iceland, has recently produced unusually intense seismic activity, possibly among the strongest recorded since modern monitoring began.However, Geirsson emphasized that scientists do not all agree on this interpretation. The instrumental record is relatively short, and measuring crustal deformation beneath a glacier is especially difficult.Shiveluch (Kamchatka): (9 Jun) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 33000 ft (10100 m) altitude or flight level 330 and is moving at 10 kts in NE direction.The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:09/0520Z to 33000 ft (10100 m)Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260609/1906Z FL090 EXTD NW REPORTED OBS VA DTG:09/1910ZTitan Ridge (Admiralty Islands and Bismarck Sea Volcanic Province): (9 Jun) The underwater eruption in the Bismark Sea continues. A video on social media shows the volcano from a boat nearby emitting dense plumes of steam as magma interacts with sea water:#Volcan #Volcano #TitanRidge #Mer_de_Bismarck pic.twitter.com/2EA02sZQvU— Shérine (@SherineFrance) June 8, 2026 Ibu (Halmahera, Indonesia): 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 05 kts in NW direction.The full report is as follows: VA TO FL070 LAST REPORTED AT 09/1720Z EST VA DTG:09/1810Z to 7000 ft (2100 m)Lewotobi (Flores): (9 Jun) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .The full report is as follows: VA TO FL080 MOV SW OBS VA DTG:09/0440Z to 8000 ft (2400 m)Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 05 kts in NW direction.The full report is as follows: VA TO FL150 OBS AT 09/1310Z OBS VA DTG:09/1310Z to 15000 ft (4600 m)Marapi (Western Sumatra, Indonesia): 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 .The full report is as follows: VA TO FL110 REPORTED AT 09/1519Z EST VA DTG:09/1600Z to 11000 ft (3400 m)Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 and is moving at 10 kts in NW direction.The full report is as follows: VA TO FL090 OBS AT 09/1840Z EST VA DTG:09/1840Z to 9000 ft (2700 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: FRQT VA EMS to 14000 ft (4300 m)Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: OCNL VA EMSReventador (Ecuador): 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 ash