Kategorie: Climate Change

Volcanic Ash Advisory Center Washington (VAAC) issued the following report:

FVXX24 at 00:33 UTC, 18/12/25 from KNES
VA ADVISORY
DTG: 20251218/0030Z

VAAC: WASHINGTON

VOLCANO: PURACE 351060
PSN: N0219 W07624

AREA: COLOMBIA

SOURCE ELEV: 15256 FT AMSL

ADVISORY NR: 2025/101

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: VA EMS ONGOING

EST VA DTG: 18/0010Z

EST VA CLD: SFC/FL180 N0222 W07635 – N0219 W07623
– N0219 W07624 – N0216 W07635 – N0222 W07635 MOV
W 10KT

FCST VA CLD +6HR: 18/0600Z SFC/FL180 N0222 W07635
– N0219 W07625 – N0218 W07625 – N0216 W07635 –
N0222 W07635

FCST VA CLD +12HR: 18/1200Z SFC/FL180 N0219
W07625 – N0218 W07623 – N0210 W07632 – N0216
W07634 – N0219 W07625

FCST VA CLD +18HR: 18/1800Z SFC/FL180 N0219 W07624
– N0218 W07623 – N0210 W07631 – N0216 W07635 –
N0219 W07624

RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN
SUMMIT AREA. VA EMS LIKELY CONTINUE GIVEN RECENT
ACTVTY. MDL WINDS AT FL FCST TO BACK BY T+12 HR
BECMG MORE FM THE NE. …KONON

NXT ADVISORY: WILL BE ISSUED BY 20251218/0630Z

Canlaon (Central Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Kanlaon on 16 December 2025 (local). The alert level remained at „2 – Moderate Level of Volcanic Unrest“ (level 2 on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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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 the eruption continued at Taal on 16 December 2025 (local). The alert level remained at „1 – Low-Level Unrest“ (on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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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 16 December 2025 (local). The alert level remained at „1 – Abnormal“ (on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „1 – Abnormal“ (on a 0–5 level scale)

…16 Dec:
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Mayon on 15 December 2025 (local). The alert level remained at „1 – Abnormal“ (on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „1 – Abnormal“ (on a 0–5 level scale)

Bagana (Bougainville Island, Papua New Guinea): (17 Dec) The effusive eruption at the volcano continues.
The latest Sentinel-2 acquisition over the volcano on 17 December confirmed that a new lava flow arm started to descend from the summit vent towards the western flank.

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 16 December 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)

Karangetang (Siau Island, Sangihe Islands, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Karangetang on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Karangetang on 15 December 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)

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 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Raung on 15 December 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): 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 E direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 17/1236Z EST VA DTG:17/1610Z to 7000 ft (2100 m)
…17 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 15 December 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)

Sangeang Api (Flores Sea, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Sangeang Api on 16 December 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)

Talang (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Talang on 16 December 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)

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 16 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (on a 4-level scale)

…16 Dec:
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 15 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (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 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 15 December 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): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotolok on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotolok on 15 December 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)

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 16 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (on a 4-level scale)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Merapi on 15 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (on a 4-level scale)

Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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: VA TO FL140 OBS AT 17/1910Z MOV SE OBS VA DTG:17/1910Z to 14000 ft (4300 m)
…17 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 16 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (on a 4-level scale)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 15 December 2025 (local). The alert level remained at „Level 3 – Standby“ (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 3 – Standby“ (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 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Marapi on 15 December 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)

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 16 December 2025 (local). Ash and gas plume(s) rose to a maximum of 1,300 m (4,265 ft) above the vent. There was 1 seismically detected explosion reported. 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dukono on 15 December 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)

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 16 December 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)

Kerinci (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 15 December 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)

Iliwerung (Lesser Sunda Islands): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Iliwerung on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Iliwerung on 15 December 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)

Lokon-Empung (North Sulawesi, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Lokon-Empung on 16 December 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)

…16 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Lokon-Empung on 15 December 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)

Kilauea (Hawai’i): The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea on 16 December 2025 (local). The alert level 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)

…16 Dec:
The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea on 15 December 2025 (local). The alert level remained at „Watch“ (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 15 December 2025 (local) and 16 December 2025 (local). The alert level remained at „Advisory“ (level 2 on a 4-level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale).
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)

…16 Dec:
The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Shishaldin between 14 December 2025 (local) and 15 December 2025 (local). The alert level remained at „Advisory“ (level 2 on a 4-level scale).
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 15 December 2025 (local) and 16 December 2025 (local). The alert level 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 – Alaska Volcano Observatory (USGS-AVO)
… [read more] … [show less]
Current Alerts:
Observatory alert level: „Watch“ (level 3 on a 4-level scale)

…16 Dec:
The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that the eruption continued at Great Sitkin between 14 December 2025 (local) and 15 December 2025 (local). The alert level remained at „Watch“ (level 3 on a 4-level scale).
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): The Centro Nacional de Prevención de Desastres (CENAPRED) reported that the eruption continued at Popocatépetl between 15 December 2025 (local) and 16 December 2025 (local). The alert level 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)

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: FQNT VA EMS to 15000 ft (4600 m)
…17 Dec:
The Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología (INSIVUMEH) reported that the eruption continued at Fuego between 15 December 2025 (local) and 16 December 2025 (local). Gas plume(s) rose to a maximum of 437 m (1,434 ft) above the vent. Ash and gas plume(s) rose to a maximum of 1,037 m (3,402 ft) above the vent. Incandescent material was ejected in pulses up to 200 m above the vent, resulting in the crater area being covered with incandescent rock fragments. There were explosions reported, occurring at a rate of up to 8 per hour.
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 on 16 December 2025 (local). The alert level remained at „Level 2 – Warning“ (on a 0–4 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)

…16 Dec:
The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Turrialba on 15 December 2025 (local). The alert level remained at „Level 2 – Warning“ (on a 0–4 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)

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 on 16 December 2025 (local). The alert level 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)

…16 Dec:
The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that unrest continued at Rincón de la Vieja on 15 December 2025 (local). The alert level remained at „Level 2 – Warning“ (on a 0–4 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 on 16 December 2025 (local). The alert level 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)
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Current Alerts:
Observatory alert level: „Level 2 – Warning“ (on a 0–4 level scale)

…16 Dec:
The Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA) reported that the eruption continued at Poás on 15 December 2025 (local). The alert level remained at „Level 2 – Warning“ (on a 0–4 level scale).
Source: Observatorio Vulcanológico y Sismológico de Costa Rica – Universidad Nacional (OVSICORI-UNA)
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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 20000 ft (6100 m) altitude or flight level 200 and is moving at 10 kts in W direction.
The full report is as follows: CONT LGT VA EMS PSBL to 20000 ft (6100 m)

Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS ONGOING
…17 Dec:
The Servicio Geológico Colombiano (SGC) reported that the eruption continued at Puracé on 16 December 2025 (local). The alert level remained at „Orange“ (level 3 on a 4-level scale).
Source: Servicio Geológico Colombiano (SGC)
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Current Alerts:
Observatory alert level: „Orange“ (level 3 on a 4-level scale)

Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS PSBL
…17 Dec:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 15 December 2025 (local) and 16 December 2025 (local). The alert level remained at „2 – Yellow“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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Current Alerts:
Observatory alert level: „2 – Yellow“ (on a 4-level scale)

…16 Dec:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 14 December 2025 (local) and 15 December 2025 (local). The alert level remained at „2 – Yellow“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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Current Alerts:
Observatory alert level: „2 – Yellow“ (on a 4-level scale)

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: FQNT VA EMS OBS to 15000 ft (4600 m)
…17 Dec:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 15 December 2025 (local) and 16 December 2025 (local). The alert level remained at „3 – Orange“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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Current Alerts:
Observatory alert level: „3 – Orange“ (on a 4-level scale)

…16 Dec:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 14 December 2025 (local) and 15 December 2025 (local). The alert level remained at „3 – Orange“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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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 the eruption continued at Sabancaya between 15 December 2025 (local) and 16 December 2025 (local). The alert level remained at „Orange“ (level 3 on a 4-level scale).
Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
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Current Alerts:
Observatory alert level: „Orange“ (level 3 on a 4-level scale)

…16 Dec:
The Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP) reported that the eruption continued at Sabancaya between 14 December 2025 (local) and 15 December 2025 (local). The alert level remained at „Orange“ (level 3 on a 4-level scale).
Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
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Current Alerts:
Observatory alert level: „Orange“ (level 3 on a 4-level scale)

Barren Island (Indian Ocean): (17 Dec) The explosive-effusive eruption at the volcano continues.
Strombolian activity persists from the summit cinder cone, accompanied by ash emissions and ejecta.
The lava continues to keep the flow active, which advances forming the lava delta on the northern coastline.

Volcano Activity Summary for 17 Dec 2025:

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin 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:

FVAU02 at 19:30 UTC, 17/12/25 from ADRM
VA ADVISORY
DTG: 20251217/1930Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1440
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL140 OBS AT 17/1910Z MOV SE
OBS VA DTG: 17/1910Z
OBS VA CLD: SFC/FL140 S0807 E11250 – S0801 E11254 – S0821
E11358 – S0847 E11343 MOV SE 15KT
FCST VA CLD +6 HR: 18/0110Z SFC/FL140 S0806 E11251 – S0802
E11256 – S0828 E11352 – S0849 E11336
FCST VA CLD +12 HR: 18/0710Z SFC/FL140 S0805 E11250 – S0801
E11256 – S0828 E11330 – S0840 E11315
FCST VA CLD +18 HR: 18/1310Z SFC/FL140 S0804 E11250 – S0800
E11257 – S0820 E11319 – S0831 E11259
RMK: VA IDENTIFIABLE ON LATEST SATELLITE IMAGERY. GROUND
REPORTS INDICATE INTERMITTENT DISCRETE EMISSIONS REMAIN
ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE, GROUND
REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251218/0130Z=

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 E direction.
The full report is as follows:

FVAU01 at 16:24 UTC, 17/12/25 from ADRM
VA ADVISORY
DTG: 20251217/1624Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2025/1409
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL070 LAST REPORTED AT 17/1236Z
EST VA DTG: 17/1610Z
EST VA CLD: SFC/FL070 N0131 E12735 – N0143 E12747 – N0131
E12758 – N0121 E12750 – N0125 E12736 MOV E 05KT
FCST VA CLD +6 HR: 17/2210Z SFC/FL070 N0130 E12735 – N0143
E12747 – N0138 E12756 – N0128 E12754 – N0125 E12737
FCST VA CLD +12 HR: 18/0410Z SFC/FL070 N0131 E12735 – N0142
E12749 – N0137 E12756 – N0127 E12755 – N0126 E12736
FCST VA CLD +18 HR: 18/1010Z SFC/FL070 N0128 E12735 – N0132
E12736 – N0139 E12751 – N0130 E12758 – N0120 E12749
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
MET CLOUD. GROUND REPORTS INDICATE INTERMITTENT DISCRETE
EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON MODEL
GUIDANCE AND GROUND REPORTS.
NXT ADVISORY: NO LATER THAN 20251217/2224Z=

The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dukono on 16 December 2025 (local). Ash and gas plume(s) rose to a maximum of 1,300 m (4,265 ft) above the vent. There was 1 seismically detected explosion reported. 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)

Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)
Aviation Alert Level: unavailable or not collected

Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Dec 16, 2025