Schlagwort: volcano

The new lava delta is forming, expanding the coastline (image: Sentinel-2)

The effusive eruption at the volcano continues.

Judging from the latest Sentinel-2 satellite image, the lava persists, sustaining its flow and progressing in the formation of the lava delta along the northern coastline.
The active lava flow is currently about 966 meters long.

Satellite image of Sakurajima volcano on 4 Dec 2025

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

FVFE01 at 00:41 UTC, 04/12/25 from RJTD
VA ADVISORY
DTG: 20251204/0041Z
VAAC: TOKYO
VOLCANO: SAKURAJIMA [AIRA CALDERA] 282080
PSN: N3136 E13039
AREA: JAPAN
SOURCE ELEV: 1117M AMSL
ADVISORY NR: 2025/434
INFO SOURCE: JMA HIMAWARI-9
ERUPTION DETAILS: ERUPTED AT 20251203/2342Z FL060 EXTD SE
OBS VA DTG: 04/0010Z
OBS VA CLD: SFC/FL060 N3135 E13040 – N3132 E13046 – N3127 E13046 MOV

SE 20KT
FCST VA CLD +6 HR: 04/0610Z SFC/FL060 N3037 E13207 – N3026 E13212 –
N2956 E13118 – N3016 E13110
FCST VA CLD +12 HR: 04/1210Z SFC/FL060 N3002 E13247 – N2958 E13306 –

N2854 E13139 – N2859 E13122
FCST VA CLD +18 HR: NO VA EXP
RMK: NIL
NXT ADVISORY: 20251204/0600Z=

Map of today’s active volcanoes

Sakurajima (Kyushu, Japan): The Japan Meteorological Agency (JMA) reported that the eruption continued at Aira on 2 December 2025 (local). The alert level remained at „Level 3 – Restriction on proximity to the volcano“ (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
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Current Alerts:
Observatory alert level: „Level 3 – Restriction on proximity to the volcano“ (on a 5-level scale)

Canlaon (Central Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Kanlaon on 2 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): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20251203/1659Z FL050 REPORTED OBS VA DTG:03/1700Z
…3 Dec:
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Taal on 2 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)

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 2 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 2 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)
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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: GROUND REPORT OF DISCRETE ERUPTION WITH VA TO FL060
…3 Dec:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 2 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)
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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 2 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)
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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 2 December 2025 (local). The alert level remained at „Level 4 – Caution“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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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 2 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)
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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 2 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)
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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 2 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): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 2 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)
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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 2 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 2 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 2 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 2 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 2 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 2 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)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Aoba (Vanuatu): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Wellington warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 05 kts in NW direction.
The full report is as follows: ERUPTION AT 20251202/1400Z CONTINUOUS LOW LEVEL ERUPTION to 8000 ft (2400 m)

Kilauea (Hawai’i): The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea on 2 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)
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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 1 December 2025 (local) and 2 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)
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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 1 December 2025 (local) and 2 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)
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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 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: NEW VA EM. to 20000 ft (6100 m)
…3 Dec:
The Centro Nacional de Prevención de Desastres (CENAPRED) reported that the eruption continued at Popocatépetl between 1 December 2025 (local) and 2 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)
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Current Alerts:
Observatory alert level: „Yellow Alert – Phase 2“ (level 4 on a 7-level scale)

Santiaguito (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: OCNL VA EMS to 15000 ft (4600 m)

Fuego (Guatemala): 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: ONGOING VA EMS to 16000 ft (4900 m)

Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT SEEN IN SAT IMAGERY
…3 Dec:
The Servicio Geológico Colombiano (SGC) reported that unrest continued at Puracé on 2 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): The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 1 December 2025 (local) and 2 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): The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 1 December 2025 (local) and 2 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 1 December 2025 (local) and 2 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)

Volcano Activity Summary for 3 Dec 2025:

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

FVAU01 at 15:52 UTC, 03/12/25 from ADRM
VA ADVISORY
DTG: 20251203/1550Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2025/1352
INFO SOURCE: CVGHM
ERUPTION DETAILS: GROUND REPORT OF DISCRETE ERUPTION WITH VA
TO FL060
EST VA DTG: 03/1530Z
EST VA CLD: SFC/FL060 N0128 E12736 – N0132 E12736 – N0138
E12810 – N0120 E12810 MOV E 15KT
FCST VA CLD +6 HR: 03/2130Z SFC/FL060 N0127 E12736 – N0132
E12735 – N0143 E12806 – N0125 E12809
FCST VA CLD +12 HR: 04/0330Z NO VA EXP
FCST VA CLD +18 HR: 04/0930Z NO VA EXP
RMK: VONA 03/1325Z GROUND REPORT OF ERUPTION WITH VA TO
5520FT MOVING NE. VA NOT DETECTED ON SATELLITE IMAGERY AS
SUMMIT OBSCURED BY MET CLOUD. FORECAST BASED ON REPORT AND
MODEL GUIDANCE. VA EXPECTED TO DISSIPATE WITHIN 6-12 HOURS.
NXT ADVISORY: NO LATER THAN 20251203/2150Z=

The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that the eruption continued at Kilauea on 2 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)

Current Alerts:
Observatory alert level: „Watch“ (level 3 on a 4-level scale)
Aviation Alert Level: „Orange“ (level 3 on a 4-level scale)

Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Dec 2, 2025