Volcanic activity worldwide 9 Sep 2025: Santiaguito volcano, Pacaya, Fuego, Popocatépetl, Soputan, …

Öraefajökull (Iceland): Volcanic Ash Advisory Center London (VAAC) issued the following report: EXCERCISE ERUPTION CEASED OBS VA DTG:09/1623Z

Asama (Honshu): The Japan Meteorological Agency (JMA) reported that unrest continued at Asamayama between 5 September 2025 (local) and 8 September 2025 (local). The alert level at Asamayama remained at „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale)

Kirishima (Kyushu): The Japan Meteorological Agency (JMA) reported that the eruption continued at Kirishimayama between 5 September 2025 (local) and 8 September 2025 (local). The alert level at Kirishimayama remained at „Level 3 – Restriction on proximity to the volcano“ (on a 5-level scale).
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)

Iwo-jima (Volcano Islands): (9 Sep) The new eruption at the volcano has been captured from space, showing the ash plume on the western side of the island on 2 September.

Kikai (Ryukyu Islands): The Japan Meteorological Agency (JMA) reported that unrest continued at Kikai between 1 September 2025 (local) and 8 September 2025 (local). The alert level at Kikai remained at „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale)

Kusatsu-Shirane (Honshu): The Japan Meteorological Agency (JMA) reported that unrest activity increased at Kusatsu-Shiranesan between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Kusatsu-Shiranesan remained at „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale)

Sakurajima (Kyushu, Japan): The Japan Meteorological Agency (JMA) reported that the eruption continued at Aira between 5 September 2025 (local) and 8 September 2025 (local). The alert level at Aira remained at „Level 3 – Restriction on proximity to the volcano“ (on a 5-level scale). Incandescence was observed at Minamidake Crater in overnight high-sensitivity surveillance camera images during 5–8 September.
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)

Suwanose-jima (Ryukyu Islands): The Japan Meteorological Agency (JMA) reported that the eruption continued at Suwanosejima between 1 September 2025 (local) and 8 September 2025 (local). The alert level at Suwanosejima remained at „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Restriction on proximity to the crater“ (on a 5-level scale)

Canlaon (Central Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Kanlaon on 8 September 2025 (local). The alert level at Kanlaon remained at „2 – Moderate Level of Volcanic Unrest“ (level 2 on a 0–5 level scale). Plumes rose to a maximum of 75 meters (246 feet) above the vent.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „2 – Moderate Level of Volcanic Unrest“ (level 2 on a 0–5 level scale)

Taal (Luzon, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Taal on 8 September 2025 (local). The alert level at Taal remained at „1 – Low-Level Unrest“ (on a 0–5 level scale). Plumes rose to a maximum of 900 meters (2,953 feet) above the vent.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „1 – Low-Level Unrest“ (on a 0–5 level scale)

Mayon (Luzon Island, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Mayon on 8 September 2025 (local). The alert level at Mayon remained at „1 – Abnormal“ (on a 0–5 level scale). Very faint crater incandescence, observable only through a telescope, was reported.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „1 – Abnormal“ (on a 0–5 level scale)

Bulusan (Luzon Island, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Bulusan on 8 September 2025 (local). The alert level at Bulusan remained at „1 – Low Level of Volcanic Unrest“ (level 1 on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „1 – Low Level of Volcanic Unrest“ (level 1 on a 0–5 level scale)

Telong (northern Sumatra, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Telong, Bur ni on 8 September 2025 (local). The alert level at Telong, Bur ni 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)

Karangetang (Siau Island, Sangihe Islands, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest activity increased at Karangetang on 8 September 2025 (local). The alert level at Karangetang 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)

Raung (East Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Raung on 8 September 2025 (local). The alert level at Raung remained at „Level 2 – Alert“ (on a 4-level scale). Plumes rose to a maximum of 300 meters (984 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)

Gamalama (Halmahera): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gamalama on 8 September 2025 (local). The alert level at Gamalama 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): 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 W direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 09/1344Z MOV W to 7000 ft (2100 m)
…9 Sep:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 8 September 2025 (local). The alert level at Ibu remained at „Level 2 – Alert“ (on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale). There were 52 explosions reported, with plumes rising to a maximum of 600 meters (1,969 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)

Tangkubanparahu (West Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tangkuban Parahu on 8 September 2025 (local). The alert level at Tangkuban Parahu 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)

Lewotobi (Flores): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotobi (Laki-Laki) on 8 September 2025 (local). The alert level at Lewotobi (Laki-Laki) remained at „Level 4 – Caution“ (on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 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 4 – Caution“ (on a 4-level scale)

Soputan (North Sulawesi, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 8 September 2025 (local). The alert level at Soputan remained at „Level 2 – Alert“ (on a 4-level scale). Plumes rose to a maximum of 20 meters (66 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)

Lewotolo (Lesser Sunda Islands): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotolok on 8 September 2025 (local). The alert level at Lewotolok remained at „Level 3 – Standby“ (on a 4-level scale). There were 85 seismically detected explosions reported.
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 3 – Standby“ (on a 4-level scale)

Merapi (Central Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Merapi on 8 September 2025 (local). The alert level at Merapi remained at „Level 3 – Standby“ (on a 4-level scale). Plumes rose to a maximum of 50 meters (164 feet) above the vent. There were 29 observed hot rockfalls and 105 seismically detected rockfalls, traveling up to 1,800 m.
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 3 – Standby“ (on a 4-level scale)

Bromo (East Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tengger Caldera on 8 September 2025 (local). The alert level at Tengger Caldera remained at „Level 2 – Alert“ (on a 4-level scale). Plumes rose to a maximum of 500 meters (1,640 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 09/1310Z EST VA DTG:09/1640Z
…9 Sep:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 8 September 2025 (local). The alert level at Semeru remained at „Level 2 – Alert“ (on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale). There were 54 explosions reported, with plumes rising to a maximum of 800 meters (2,625 feet) above the vent. There were 5 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 2 – Alert“ (on a 4-level scale)

Marapi (Western Sumatra, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Marapi on 8 September 2025 (local). The alert level at Marapi remained at „Level 2 – Alert“ (on a 4-level scale). There was 1 explosion reported, with plumes rising to a maximum of 1,000 meters (3,281 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)

Dempo (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dempo on 8 September 2025 (local). The alert level at Dempo remained at „Level 2 – Alert“ (on a 4-level scale). There was 1 seismically detected rockfall.
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)

Dukono (Halmahera): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dukono on 8 September 2025 (local). The alert level at Dukono remained at „Level 2 – Alert“ (on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale). There were 11 explosions reported, with plumes rising to a maximum of 400 meters (1,312 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)

Gede-Pangrango (West Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gede-Pangrango on 8 September 2025 (local). The alert level at Gede-Pangrango remained at „Level 1 – Normal“ (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 1 – Normal“ (on a 4-level scale)

Ruang (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 8 September 2025 (local). The alert level at Ruang remained at „Level 2 – Alert“ (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 2 – Alert“ (on a 4-level scale)

Awu (Sulawesi & Sangihe Islands): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Awu on 8 September 2025 (local). The alert level at Awu remained at „Level 2 – Alert“ (on a 4-level scale). Plumes rose to a maximum of 20 meters (66 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)

Kerinci (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 8 September 2025 (local). The alert level at Kerinci remained at „Level 2 – Alert“ (on a 4-level scale). Plumes rose to a maximum of 300 meters (984 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)

Lokon-Empung (North Sulawesi, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest activity increased at Lokon-Empung on 8 September 2025 (local). The alert level at Lokon-Empung remained at „Level 3 – Standby“ (on a 4-level scale). Plumes rose to a maximum of 75 meters (246 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 3 – Standby“ (on a 4-level scale)

White Island (New Zealand): The GeoNet reported that eruptive activity decreased at Whakaari/White Island between 28 August 2025 (local) and 8 September 2025 (local). The alert level at Whakaari/White Island remained at „2 – Moderate to heightened volcanic unrest“ (level 2 on a 0–5 level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale). Changes in fumarolic activity were confirmed during the 3 September overflight. Fumarole 0 on the S side of the main crater appeared inactive, except for an inclined vent still active. Several vents in the Fumarole 13/14 area on the N side of the crater remained active.
Source: GeoNet
… [read more] … [show less]
Current Alerts:
Observatory alert level: „2 – Moderate to heightened volcanic unrest“ (level 2 on a 0–5 level scale)

…9 Sep:
Following the recent eruption at the volcano on 28 August, an observation flight footage confirms that the activity generated a thin layer of tephra on the island. The active vent area remains unchanged, indicating that no large-scale activity has occurred. The eruptive activity has not continued, and none was observed during the flight.
A vent temperature of 164 °C was recorded, which is typical for unrest rather than eruptive activity. This fumarole temperature is relatively low compared to past periods of heightened activity, when vent temperatures often exceeded 400–600 °C due to shallow magma beneath the vent. Data from gas-monitoring flights and satellite observations also show stable gas emissions, supporting the assessment of only minor activity. Overall, these findings are consistent with moderate to heightened unrest, and the Volcanic Alert Level remains at 2.
Source: Geonet New Zealand volcano activity update 9 September 2025

Kilauea (Hawai’i): The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Kilauea remained at „Watch“ (level 3 on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale).
Source: United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Watch“ (level 3 on a 4-level scale)

Shishaldin (Aleutian Islands, Alaska): The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Shishaldin between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Shishaldin remained at „Advisory“ (level 2 on a 4-level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale). There were explosions reported. Other activity included: SO2 degassing.
Source: United States Geological Survey – Alaska Volcano Observatory (USGS-AVO)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Advisory“ (level 2 on a 4-level scale)

Great Sitkin (United States, Aleutian Islands): The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that the eruption continued at Great Sitkin between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Great Sitkin remained at „Watch“ (level 3 on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale). Lava continued to erupt in the summit crater.
Source: United States Geological Survey – Alaska Volcano Observatory (USGS-AVO)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Watch“ (level 3 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 19000 ft (5800 m) altitude or flight level 190 .
The full report is as follows: LGT VA EMS SEEN IN SAT MOV SW to 19000 ft (5800 m)
…9 Sep:
The Centro Nacional de Prevención de Desastres (CENAPRED) reported that the eruption continued at Popocatépetl between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Popocatépetl remained at „Yellow Alert – Phase 2“ (level 4 on a 7-level scale).
Source: Centro Nacional de Prevención de Desastres (CENAPRED)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Yellow Alert – Phase 2“ (level 4 on a 7-level scale)

Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: POSS VA CONTG
…9 Sep:
The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that the eruption continued at Santa María between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Santa María was unavailable or not collected. There were explosions reported, occurring at a rate of up to 3 per hour, with plumes rising to a maximum of 900 meters (2,953 feet) above the vent.
Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
… [read more] … [show less]
Current Alerts:
Observatory alert level: unavailable or not collected

Pacaya (Guatemala): The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that unrest continued at Pacaya between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Pacaya was unavailable or not collected.
Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
… [read more] … [show less]
Current Alerts:
Observatory alert level: unavailable or not collected

Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LKLY VA EMS
…9 Sep:
The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that the eruption continued at Fuego between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Fuego was unavailable or not collected. There were explosions reported, occurring at a rate of up to 10 per hour, with plumes rising to a maximum of 1,037 meters (3,402 feet) above the vent. Some explosions ejected incandescent material up to 200 meters above the vent. Explosions were occasionally accompanied by faint rumbling sounds. Degassing activity generated noises resembling a train engine or airplane turbine.
Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH)
… [read more] … [show less]
Current Alerts:
Observatory alert level: unavailable or not collected

Turrialba (Costa Rica): The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Turrialba between 4 September 2025 (local) and 8 September 2025 (local). The alert level at Turrialba remained at „Level 2 – Warning“ (on a 0–4 level scale). An increase in tornillo-type seismic events was observed.
Source: Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Warning“ (on a 0–4 level scale)

Rincón de la Vieja (Costa Rica): The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Rincón de la Vieja between 4 September 2025 (local) and 8 September 2025 (local). The alert level at Rincón de la Vieja remained at „Level 2 – Warning“ (on a 0–4 level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale).
Source: Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Warning“ (on a 0–4 level scale)

Poas (Costa Rica): The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that the eruption continued at Poás between 4 September 2025 (local) and 8 September 2025 (local). The alert level at Poás remained at „Level 2 – Warning“ (on a 0–4 level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale). There was 1 explosion reported.
Source: Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Level 2 – Warning“ (on a 0–4 level scale)

Nevado del Ruiz (Colombia): 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: VONA RPRT AND CONFIRMED IN SAT to 22000 ft (6700 m)

Sangay (Ecuador): 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: CONS VA EMS to 19000 ft (5800 m)
…9 Sep:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Sangay remained at „2 – Yellow“ (on a 4-level scale). There were 80 seismically detected explosions reported. Plumes rose to a maximum of 800 meters (2,625 feet) above the vent. Crater incandescence was observed during nighttime hours.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „2 – Yellow“ (on a 4-level scale)

Reventador (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
…9 Sep:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Reventador remained at „3 – Orange“ (on a 4-level scale). There were 92 seismically detected explosions reported. Plumes rose to a maximum of 900 meters (2,953 feet) above the vent. There were observed incandescent rockfalls.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „3 – Orange“ (on a 4-level scale)

Sabancaya (Peru): The Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP) reported that unrest continued at Sabancaya between 7 September 2025 (local) and 8 September 2025 (local). The alert level at Sabancaya remained at „Yellow“ (level 2 on a 4-level scale). Plumes rose to a maximum of 600 meters (1,969 feet) above the vent.
Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Yellow“ (level 2 on a 4-level scale)