Volcano earthquake report for Sunday, 21 Dec 2025
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 21 Dec 2025 Number in brackets indicate nr of quakes.

Quakes detected near: Abu (1 quake mag 1.0), Akita-Yake-yama (4 quakes between mag 0.3-1.5), Akuseki-jima (4 quakes between mag 1.8-2.1), Aso (11 quakes between mag 0.2-1.8), Bardarbunga (2 quakes between mag 0.9-1.7), Campi Flegrei (Phlegrean Fields) (9 quakes between mag 0.1-1.3)
Cerro Negro de Mayasquer (2 quakes between mag 3.0-3.0), Clear Lake (30 quakes between mag 0.3-2.3), Don Joao de Castro Bank (2 quakes between mag 2.6-3.0), El Chichón (10 quakes between mag 1.9-2.6), Esjufjöll (2 quakes between mag 0.7-1.1), Etna (1 quake mag 1.2), Fayal (1 quake mag 2.0), Haruna (1 quake mag 3.0), Hulubelu (2 quakes between mag 2.6-3.1), Ijen (1 quake mag 2.8), Kilauea (1 quake mag 1.9), Kolumbo (3 quakes between mag 1.5-1.8), Kurikoma (1 quake mag 1.0), Ljósufjöll (5 quakes between mag 0.2-1.7), Long Valley (1 quake mag 1.4), Los Atlixcos (1 quake mag 3.5), Machin (5 quakes between mag 0.9-3.6), Norikura (1 quake mag 1.1), Numazawa (1 quake mag 3.0), Paluweh (1 quake mag 2.3), San Diego (1 quake mag 1.4), Santa Isabel (1 quake mag 1.5), Santorini (4 quakes between mag 0.0-2.0), Suwanose-jima (1 quake mag 3.3), Tambora (1 quake mag 2.6), Tecuamburro (1 quake mag 3.0), Tenerife (2 quakes between mag 1.4-1.9), Tjörnes Fracture Zone (9 quakes between mag 1.0-1.9), Unzen (1 quake mag 2.5), Vesuvius (3 quakes between mag 0.2-1.0), Washiba-Kumonotaira (2 quakes between mag 0.2-1.7), Öraefajökull (1 quake mag 1.9) (updated 18h50)

Note: Earthquakes within 20 km from and at depths less than 50 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.

Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:



Akuseki-jima volcano (Ryukyu Islands): 4 earthquakes up to magnitude 2.1

4 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 12.00 and 4.40 km.
Earthquake details:
2.1 quake East China Sea, Kagoshima-ken, 19 km southwest of Suwanose-jima Island, Japan, Dec 21, 2025 09:31 pm (GMT +9) (4 km N)
1.9 quake East China Sea, Kagoshima-ken, 13 km southwest of Suwanose-jima Island, Japan, Dec 21, 2025 10:30 pm (GMT +9) (10 km NNE)
1.9 quake East China Sea, Kagoshima-ken, 16 km south of Suwanose-jima Island, Japan, Dec 21, 2025 10:06 pm (GMT +9) (11 km ENE)
1.8 quake East China Sea, Kagoshima-ken, 15 km southwest of Suwanose-jima Island, Japan, Dec 21, 2025 09:13 am (GMT +9) (4 km NNE)
All earthquakes at Akuseki-jima

Aso volcano (Kyushu): 11 earthquakes up to magnitude 1.8

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 1 hour 51 minutes ago. Hypocenter depths ranged between 12.70 and 6.20 km.
Earthquake details: (only 5 largest)
1.8 quake Miyazaki, 24 km southeast of Aso, Kumamoto, Japan, Dec 21, 2025 01:13 pm (GMT +9) (19 km ESE)
1.1 quake 6.9 km northeast of Aso, Kumamoto, Japan, Dec 21, 2025 03:46 pm (GMT +9) (12 km N)
0.9 quake 44 km northeast of Kumamoto, Kumamoto, Japan, Dec 22, 2025 01:59 am (GMT +9) (12 km N)
0.9 quake 44 km northeast of Kumamoto, Kumamoto, Japan, Dec 21, 2025 03:10 pm (GMT +9) (12 km N)
0.7 quake 46 km northeast of Kumamoto, Kumamoto, Japan, Dec 21, 2025 04:58 am (GMT +9) (13 km N)
All earthquakes at Aso

Cerro Negro de Mayasquer volcano (Colombia): 2 earthquakes up to magnitude 3.0

2 earthquakes occurred near (under) the volcano at nearly the same time (10:00 UTC). Hypocenter depths ranged between 3.00 and 3.00 km.
Earthquake details:
3.0 quake 25 km west of Tulcán, Provincia del Carchi, Ecuador, Dec 21, 2025 05:00 am (GMT -5) (3 km ESE)
3.0 quake 25 km west of Tulcán, Provincia del Carchi, Ecuador, Dec 21, 2025 05:00 am (GMT -5) (3 km ESE)
All earthquakes at Cerro Negro de Mayasquer

Clear Lake volcano (California): 30 earthquakes up to magnitude 2.3

Possible earthquake swarm: 30 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 9.45 and 0.92 km.
Earthquake details: (only 5 largest)
2.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Dec 20, 2025 11:43 am (GMT -8) (18 km SSW)
2.0 quake Sonoma County, 13 mi southwest of Clearlake, Lake County, California, United States, Dec 20, 2025 07:17 pm (GMT -8) (17 km S)
1.9 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Dec 20, 2025 11:12 pm (GMT -8) (17 km S)
1.8 quake Sonoma County, 15 mi southwest of Clearlake, Lake County, California, United States, Dec 20, 2025 11:44 am (GMT -8) (18 km SSW)
1.8 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Dec 21, 2025 12:05 am (GMT -8) (17 km S)
All earthquakes at Clear Lake

Don Joao de Castro Bank volcano (Azores): 2 earthquakes up to magnitude 3.0

2 earthquakes occurred near (under) the volcano during 1 hour 39 minutes, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 2.00 and 2.00 km.
Earthquake details:
3.0 quake North Atlantic Ocean, 92 km northwest of Ponta Delgada, Azores, Portugal, Dec 21, 2025 03:02 am (GMT -1) (12 km SSE)
2.6 quake North Atlantic Ocean, 93 km northwest of Ponta Delgada, Azores, Portugal, Dec 21, 2025 04:41 am (GMT -1) (14 km S)
All earthquakes at Don Joao de Castro Bank

El Chichón volcano (Southern Mexico): 10 earthquakes up to magnitude 2.6

10 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 5.00 and 1.80 km.
Earthquake details: (only 5 largest)
2.6 quake Estado de Chiapas, 38 km southwest of Teapa, Estado de Tabasco, Mexico, Dec 20, 2025 10:37 pm (GMT -6) (1 km W)
2.3 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, Dec 21, 2025 04:28 am (GMT -6) (1 km ENE)
2.2 quake Estado de Chiapas, 37 km southwest of Teapa, Estado de Tabasco, Mexico, Dec 21, 2025 04:27 am (GMT -6) (1 km NW)
2.1 quake Estado de Chiapas, 35 km southwest of Teapa, Estado de Tabasco, Mexico, Dec 21, 2025 04:26 am (GMT -6) (2 km N)
2.1 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, Dec 21, 2025 04:28 am (GMT -6) (1 km N)
All earthquakes at El Chichón

Haruna volcano (Honshu): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 11 km distance E from the volcano.
Earthquake details:
Reported quake or seismic-like event: 17 km north of Takasaki, Gunma, Japan, Dec 21, 2025 01:34 pm (GMT +9) (11 km E)
All earthquakes at Haruna

Hulubelu volcano (Sumatra): 2 earthquakes up to magnitude 3.1

2 earthquakes occurred near (under) the volcano during 5 minutes, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 2.00 and 1.00 km.
Earthquake details:
3.1 quake Kabupaten Tanggamus, 74 km west of Bandar Lampung, Indonesia, Dec 21, 2025 07:26 pm (GMT +7) (2 km ESE)
2.6 quake Kabupaten Tanggamus, 73 km west of Bandar Lampung, Indonesia, Dec 21, 2025 07:21 pm (GMT +7) (3 km E)
All earthquakes at Hulubelu

Ijen volcano (East Java): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 10 km distance NW from the volcano.
Earthquake details:
2.8 quake Kabupaten Bondowoso, 34 km northwest of Banyuwangi, Indonesia, Dec 21, 2025 07:00 pm (GMT +7) (10 km NW)
All earthquakes at Ijen

Los Atlixcos volcano (Western & Central Mexico): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.80 km depth at 14 km distance ESE from the volcano.
Earthquake details:
3.5 quake 59 km northeast of Xalapa, Estado de Veracruz-Llave, Mexico, Dec 20, 2025 02:34 pm (GMT -6) (14 km ESE)
All earthquakes at Los Atlixcos

Machin volcano (Colombia): 5 earthquakes up to magnitude 3.6

5 earthquakes occurred near (under) the volcano during 1 hour 18 minutes, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 8.00 and 1.00 km.
Earthquake details:
3.6 quake 21 km west of Ibague, Departamento de Tolima, Colombia, Dec 20, 2025 11:24 pm (GMT -5) (2 km NNE)
2.8 quake 21 km northwest of Ibague, Departamento de Tolima, Colombia, Dec 20, 2025 11:24 pm (GMT -5) (4 km NNE)
1.5 quake 25 km northwest of Ibague, Departamento de Tolima, Colombia, Dec 20, 2025 10:56 pm (GMT -5) (7 km NNW)
1.3 quake 27 km northwest of Ibague, Departamento de Tolima, Colombia, Dec 21, 2025 12:14 am (GMT -5) (8 km NNW)
0.9 quake 21 km west of Ibague, Departamento de Tolima, Colombia, Dec 20, 2025 10:56 pm (GMT -5) (3 km NE)
All earthquakes at Machin

Numazawa volcano (Honshu): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 8 km distance N from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 29 km southwest of Kitakata, Fukushima, Japan, Dec 21, 2025 02:12 pm (GMT +9) (8 km N)
All earthquakes at Numazawa

Paluweh volcano (Lesser Sunda Islands): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 20.00 km depth at 16 km distance SE from the volcano.
Earthquake details:
2.3 quake Flores Sea, 48 km north of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia, Dec 21, 2025 08:34 am (GMT +8) (16 km SE)
All earthquakes at Paluweh

Suwanose-jima volcano (Ryukyu Islands): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 20.00 km depth at 12 km distance WSW from the volcano.
Earthquake details:
3.3 quake East China Sea, Kagoshima-ken, 12 km west of Suwanose-jima Island, Japan, Dec 21, 2025 10:03 pm (GMT +9) (12 km WSW)
All earthquakes at Suwanose-jima

Tambora volcano (Sumbawa): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 24.00 km depth at 18 km distance N from the volcano.
Earthquake details:
2.6 quake Flores Sea, 51 km east of Pulau Moyo Island, West Nusa Tenggara, Indonesia, Dec 21, 2025 11:53 am (GMT +8) (18 km N)
All earthquakes at Tambora

Tecuamburro volcano (Guatemala): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.00 km depth at 16 km distance E from the volcano.
Earthquake details:
3.0 quake 16 km south of Cuilapa, Departamento de Santa Rosa, Guatemala, Dec 21, 2025 03:16 am (GMT -6) (16 km E)
All earthquakes at Tecuamburro

Unzen volcano (Kyushu): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 10 km distance WNW from the volcano.
Earthquake details:
2.5 quake 5.5 km northwest of Unzen, Nagasaki, Japan, Dec 21, 2025 11:03 pm (GMT +9) (10 km WNW)
All earthquakes at Unzen
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