Map of today's active volcanoesGamalama (Halmahera): (27 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gamalama on 26 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) ... [read more] ... [show less] Current Alerts:Observatory alert level: "Level 2 - Alert" (on a 4-level scale)Slamet (Central Java, Indonesia): (27 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Slamet on 26 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) ... [read more] ... [show less] Current Alerts:Observatory alert level: "Level 2 - Alert" (on a 4-level scale)Ibu (Halmahera, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 28/1340Z EST VA DTG:28/1600ZLewotobi (Flores): 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 15 kts in W direction.The full report is as follows: VA TO FL090 LAST REPORTED AT 28/1446Z MOV WSW to 9000 ft (2700 m)Soputan (North Sulawesi, Indonesia): (27 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 26 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) ... [read more] ... [show less] Current Alerts:Observatory alert level: "Level 2 - Alert" (on a 4-level scale)Lewotolo (Lesser Sunda Islands): 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 15 kts in SW direction.The full report is as follows: VA TO FL070 LAST REPORTED AT 28/0749Z MOV W to 7000 ft (2100 m)Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 28/1740Z EST VA DTG:28/1800ZDukono (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 .The full report is as follows: VA TO FL060 REPORTED FM GND AT 28/0928Z MOV NW to 6000 ft (1800 m)Ruang (Sangihe Islands, Indonesia): (27 Sep) The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Ruang on 26 September 2025 (local). The alert level remained at "Level 2 - Alert" (on a 4-level scale).Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) ... [read more] ... [show less] Current Alerts:Observatory alert level: "Level 2 - Alert" (on a 4-level scale)Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMSFuego (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: ONGOING VA EMS to 14000 ft (4300 m)Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS RPRTDSangay (Ecuador): 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 .The full report is as follows: VA EMS CONT to 22000 ft (6700 m)Reventador (Ecuador): 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: ONGOING VA EMS to 14000 ft (4300 m)Volcano Activity Summary for 28 Sep 2025: