Map of today's active volcanoesKrasheninnikov (Kamchatka, Russia): The Kamchatkan Volcanic Eruption Response Team (KVERT) and Laboratory for Seismic and Volcanic Activity Research (ISVA) reported that the eruption continued at Krasheninnikov on 10 September 2025 (local). The aviation alert level at Krasheninnikov remained at "Orange" (level 3 on a 4-level scale). Lava effusion continued from the northern crater. Lava flowed toward the E flank.Source: Kamchatkan Volcanic Eruption Response Team (KVERT); Laboratory for Seismic and Volcanic Activity Research (ISVA) ... [read more] ... [show less] Current Alerts:Observatory alert level: unavailable or not collectedKlyuchevskoy (Kamchatka): The Laboratory for Seismic and Volcanic Activity Research (ISVA) reported that the eruption continued at Klyuchevskoy on 10 September 2025 (local). The aviation alert level at Klyuchevskoy remained at "Green" (level 1 on a 4-level scale).Source: Laboratory for Seismic and Volcanic Activity Research (ISVA) ... [read more] ... [show less] Current Alerts:Observatory alert level: unavailable or not collectedKarymsky (Kamchatka): The Kamchatkan Volcanic Eruption Response Team (KVERT) and Laboratory for Seismic and Volcanic Activity Research (ISVA) reported that the eruption continued at Karymsky on 10 September 2025 (local). The aviation alert level at Karymsky remained at "Orange" (level 3 on a 4-level scale).Source: Kamchatkan Volcanic Eruption Response Team (KVERT); Laboratory for Seismic and Volcanic Activity Research (ISVA) ... [read more] ... [show less] Current Alerts:Observatory alert level: unavailable or not collectedShiveluch (Kamchatka): The Kamchatkan Volcanic Eruption Response Team (KVERT) and Laboratory for Seismic and Volcanic Activity Research (ISVA) reported that the eruption continued at Sheveluch on 10 September 2025 (local). The aviation alert level at Sheveluch remained at "Orange" (level 3 on a 4-level scale).Source: Kamchatkan Volcanic Eruption Response Team (KVERT); Laboratory for Seismic and Volcanic Activity Research (ISVA) ... [read more] ... [show less] Current Alerts:Observatory alert level: unavailable or not collectedBezymianny (Kamchatka): The Kamchatkan Volcanic Eruption Response Team (KVERT) and Laboratory for Seismic and Volcanic Activity Research (ISVA) reported that the eruption continued at Bezymianny on 10 September 2025 (local). The aviation alert level at Bezymianny remained at "Yellow" (level 2 on a 4-level scale).Source: Kamchatkan Volcanic Eruption Response Team (KVERT); Laboratory for Seismic and Volcanic Activity Research (ISVA) ... [read more] ... [show less] Current Alerts:Observatory alert level: unavailable or not collectedManam (Papua New Guinea): (11 Sep) New ash emissions have been detected throughout the satellite imagery.On 10 September, the latest Sentinel-2 acquisition depicts an ongoing ash plume which extended westward. In addition, the continuous thermal radiation is registered in the northern crater.Slamet (Central Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Slamet on 10 September 2025 (local). The alert level at Slamet remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 50 meters (164 feet) above the vent.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: VA LAST REPORTED 11/1548Z EST VA DTG:11/1940ZSinabung (Sumatra, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Sinabung on 10 September 2025 (local). The alert level at Sinabung remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 200 meters (656 feet) above the vent.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)Dieng (Central Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Dieng Volcanic Complex on 10 September 2025 (local). The alert level at Dieng Volcanic Complex remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 80 meters (262 feet) above the vent.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)Tambora (Sumbawa): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tambora on 10 September 2025 (local). The alert level at Tambora remained at "Level 1 - Normal" (on a 4-level scale). There were 2 seismically detected rockfalls.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 1 - Normal" (on a 4-level scale)Lewotolo (Lesser Sunda Islands): (11 Sep) 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 OBS AT 10/2350Z MOV NW OBS VA DTG:10/2350Z to 8000 ft (2400 m)Krakatau (Sunda Strait, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Krakatau on 10 September 2025 (local). The alert level at Krakatau remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 10 meters (33 feet) above the vent.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)Semeru (East Java, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION LAST REPORTED AT 11/0157Z EST VA DTG:11/1040ZIjen (East Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Ijen on 10 September 2025 (local). The alert level at Ijen remained at "Level 1 - Normal" (on a 4-level scale). Plumes rose to a maximum of 100 meters (328 feet) above the vent.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 1 - Normal" (on a 4-level scale)Papandayan (West Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Papandayan on 10 September 2025 (local). The alert level at Papandayan remained at "Level 1 - Normal" (on a 4-level scale). Plumes rose to a maximum of 15 meters (49 feet) above the vent.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 1 - Normal" (on a 4-level scale)Marapi (Western Sumatra, Indonesia): (11 Sep) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ERUPTION OF UNKNOWN HEIGHT REPORTED AT 11/0305ZRuang (Sangihe Islands, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Ruang on 10 September 2025 (local). The alert level at Ruang remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 50 meters (164 feet) above the vent.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)Agung (Bali): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Agung on 10 September 2025 (local). The alert level at Agung remained at "Level 1 - Normal" (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 1 - Normal" (on a 4-level scale)Kelimutu (Flores): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kelimutu on 10 September 2025 (local). The alert level at Kelimutu remained at "Level 1 - Normal" (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 1 - Normal" (on a 4-level scale)Banda Api (Banda Sea): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Banda Api on 10 September 2025 (local). The alert level at Banda Api remained at "Level 2 - Alert" (on a 4-level scale). Plumes rose to a maximum of 25 meters (82 feet) above the vent.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)Popocatépetl (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: NEW VA EMS to 20000 ft (6100 m)Santiaguito (Guatemala): (11 Sep) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBSFuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: FQT VA EMS CONTNevado del Ruiz (Colombia): (11 Sep) 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: RCNT VONA RPRT to 20000 ft (6100 m)Sangay (Ecuador): (11 Sep) 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: VA MOVG W to 20000 ft (6100 m)Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA RPRTD