Map of today's active volcanoesEtna (Sicily, Italy): (21 Aug) A new eruptive fissure opened on the southern flank of the Southeast Crater at about 13:40 local time yesterday.A new lava flow effuses from an altitude of 3,200 meters above sea level towards the southwest. ... [read more] ... [show less] The lava flow eruption from two vents at altitudes of 3,100 and 2,980 meters above sea level continues.Strombolian explosions from the Southeast Crater continue, accompanied by ash emissions.Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20250821/2021Z OVER FL060 EXTD SE OBS VA DTG:21/2010Z...21 Aug:The Japan Meteorological Agency (JMA) reported that the eruption continued at Aira between 18 August 2025 (local) and 20 August 2025 (local). The alert level at Aira remained at "Level 3 - Restriction on proximity to the volcano" (on a 5-level scale). Ground deformation data indicated a notable inflationary trend since 1600 on 19 August.Source: Japan Meteorological Agency (JMA) ... [read more] ... [show less] Current Alerts:Observatory alert level: "Level 3 - Restriction on proximity to the volcano" (on a 5-level scale)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 .The full report is as follows: VA TO FL070 MOV NW LAST REPORTED 21/1114Z EST VA DTG:21/1210Z to 7000 ft (2100 m)Lewotobi (Flores): (20 Aug) 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 N OBS AT 20/2300Z OBS VA DTG:20/2300Z to 8000 ft (2400 m)Dukono (Halmahera): 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 05 kts in NW direction.The full report is as follows: VA TO FL060 EXT NW LAST REPORTED 21/0905Z EST VA DTG:21/1600Z to 6000 ft (1800 m)Spurr (Cook Inlet, SW Alaska): Over the past several months, signs of volcanic unrest at Mount Spurr—including small earthquakes, gas emissions, melting ice, and surface changes—have been gradually decreasing. No ground deformation has been detected since March 2025.Taken together, this means that the movement of magma toward the surface, which began in early 2024, has stopped. As a result, the chances of an eruption in the near-term are now considered extremely low. ... [read more] ... [show less] Because of this, the Alaska Volcano Observatory (AVO) is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL, indicating that the volcano is currently quiet.Small earthquakes are still occurring more frequently than before the unrest began in February 2024, and volcanic gases are still being released from the summit crater and the Crater Peak vent on the south flank of the volcano. This is normal for volcanoes where magma has moved upward but has not erupted. Minor gas emissions and a slightly higher number of small earthquakes could persist for many months to several years.Popocatépetl (Central Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL LGT VA EMS?Santiaguito (Guatemala): (21 Aug) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA EMSNevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 .The full report is as follows: VA EMISSIONS DETECTED to 24000 ft (7300 m)Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT SEEN IN SAT OR WEBCAM.Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .The full report is as follows: VA EMISSIONS DETECTED to 16000 ft (4900 m)