Volcano earthquake report for Tuesday, 19 Dec 2023
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 19 Dec 2023 Number in brackets indicate nr of quakes.

Quakes detected near: Apaneca Range (1 quake mag 2.0), Brennisteinsfjöll (6 quakes between mag 0.1-1.1), Buzzard Creek (1 quake mag 1.2), Clear Lake (39 quakes between mag 0.3-1.9), Eldey (11 quakes between mag 1.2-2.0), Fagradalsfjall (35 quakes between mag 0.1-2.2)
Gagak (2 quakes between mag 2.5-3.1), Hrómundartindur (4 quakes between mag 0.5-1.1), Iriga (1 quake mag 2.1), Isarog (1 quake mag 1.8), Isla Zacate (1 quake mag 2.4), Kanaga (2 quakes between mag 1.4-2.8), Kilauea (4 quakes between mag 1.8-2.3), Krísuvík (3 quakes between mag 0.6-1.3), Mauna Kea (1 quake mag 2.5), Ragang (1 quake mag 2.1), Reykjanes (58 quakes between mag 0.1-3.0), Sabancaya (1 quake mag 3.6), Salton Buttes (1 quake mag 1.3), San Salvador (1 quake mag 2.0), Talagabodas (1 quake mag 3.0), Terceira (12 quakes between mag 1.5-3.3), Theistareykjarbunga (1 quake mag 1.0), Tjörnes Fracture Zone (2 quakes between mag 0.9-1.1) (updated 23h50)

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:



Clear Lake volcano (California): 39 earthquakes up to magnitude 1.9

Possible earthquake swarm: 39 earthquakes occurred near (under) the volcano during 24 hours, the last being recorded quake 10 minutes ago. Hypocenter depths ranged between 14.2 and 0.3 km.
Earthquake details: (only 5 largest)
1.9 quake 18 mi north of Windsor, Sonoma County, California, USA, Dec 19, 2023 02:44 pm (Los Angeles time) (19 km SSW)
1.7 quake Sonoma County, 16 mi southwest of Clearlake, Lake County, California, USA, Dec 18, 2023 11:50 pm (Los Angeles time) (17 km SSW)
1.6 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, USA, Dec 19, 2023 06:12 am (Los Angeles time) (19 km S)
1.4 quake 26 mi north of Santa Rosa, Sonoma County, California, USA, Dec 19, 2023 02:46 pm (Los Angeles time) (19 km SSW)
1.4 quake 27 mi north of Santa Rosa, Sonoma County, California, USA, Dec 19, 2023 03:44 am (Los Angeles time) (17 km S)
All earthquakes at Clear Lake

Eldey volcano (Iceland): 11 earthquakes up to magnitude 2.0

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 13.6 and 1.1 km.
Earthquake details: (only 5 largest)
2.0 quake Iceland: 6.2 Km SSE of Geirfugladrangur Dec 18, 2023 11:56 pm (Reykjavik time) (17 km SW)
2.0 quake 4.5 Km NE of Eldey Dec 19, 2023 12:19 pm (Reykjavik time) (7 km NE)
1.7 quake Iceland: 6.7 Km NE of Eldey Dec 19, 2023 01:58 pm (Reykjavik time) (9 km NE)
1.7 quake Iceland: 8.4 Km WNW of Reykjanestá Dec 19, 2023 05:45 pm (Reykjavik time) (11 km NNE)
1.6 quake Iceland: 7.6 Km W of Reykjanestá Dec 19, 2023 05:18 pm (Reykjavik time) (11 km NE)
All earthquakes at Eldey
Eldey is located at the beginning of the Reykjanes Ridge off the SW tip of Iceland. Its highest elevation is the top of Eldey Island, but most of the volcanic edifice is submerged.

Several eruptions occurred in historic times, last in 1926.

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 35 earthquakes up to magnitude 2.2

Possible earthquake swarm: 35 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 6.0 and 0.4 km.
Earthquake details: (only 5 largest)
2.2 quake 2.7 Km NW of Fagradalsfjall Dec 19, 2023 12:10 am (Reykjavik time) (4 km NW)
2.2 quake 2.5 Km NW of Fagradalsfjall Dec 19, 2023 02:12 am (Reykjavik time) (3 km NW)
2.2 quake 1.7 Km NNE of Fagradalsfjall Dec 19, 2023 10:55 am (Reykjavik time) (3 km N)
2.0 quake 1.7 Km NNW of Fagradalsfjall Dec 19, 2023 09:57 am (Reykjavik time) (2 km NNW)
1.7 quake 1.7 Km NNW of Fagradalsfjall Dec 19, 2023 07:10 am (Reykjavik time) (3 km NNW)
All earthquakes at Fagradalsfjall

Gagak volcano (West Java): 2 earthquakes up to magnitude 3.1

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 10.0 and 10.0 km.
Earthquake details:
3.1 quake Kabupaten Sukabumi, 27 km west of Cicurug, West Java, Indonesia, Dec 19, 2023 08:57 pm (Jakarta time) (13 km WSW)
2.5 quake Bogor Regency, 27 km southwest of Ciampea, West Java, Indonesia, Dec 19, 2023 05:49 pm (Jakarta time) (11 km W)
All earthquakes at Gagak

Iriga volcano (Luzon Island): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 8 km distance NW from the volcano.
Earthquake details:
2.1 quake 8.6 km north of Iriga City, Province of Camarines Sur, Bicol, Philippines, Dec 20, 2023 12:56 am (Manila time) (8 km NW)
All earthquakes at Iriga

Isla Zacate volcano (Honduras): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 17 km distance E from the volcano.
Earthquake details:
2.4 quake North Pacific Ocean, 9.7 km south of San Lorenzo, Honduras, Dec 18, 2023 11:44 pm (Tegucigalpa time) (17 km E)
All earthquakes at Isla Zacate

Kanaga volcano (Aleutian Islands): 2 earthquakes up to magnitude 2.8

2 earthquakes occurred near (under) the volcano during 32 minutes, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 7.4 and 1.8 km.
Earthquake details:
2.8 quake Aleutians West Parish, 23 mi west of Adak, Aleutians West, Alaska, USA, Dec 18, 2023 10:31 pm (Adak time) (1 km E)
1.4 quake Bering Sea, 24 mi west of Adak, Aleutians West, Alaska, USA, Dec 18, 2023 10:03 pm (Adak time) (2 km NNW)
All earthquakes at Kanaga

Kilauea volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.3

4 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 26.8 and 1.8 km.
Earthquake details:
2.3 quake 8.5 mi northeast of Pāhala, Hawaii County, USA, Dec 19, 2023 04:43 am (GMT +0) (17 km SW)
2.2 quake 26 mi south of Hilo, Hawaii County, USA, Dec 19, 2023 10:51 am (Honolulu time) (5 km ESE)
1.8 quake 26 mi south of Hilo, Hawaii County, USA, Dec 19, 2023 10:56 am (Honolulu time) (5 km ESE)
1.8 quake 36 mi southwest of Hilo, Hawaii County, USA, Dec 18, 2023 09:36 pm (Honolulu time) (17 km SW)
All earthquakes at Kilauea

Mauna Kea volcano (Hawai'i (Big Island)): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 17.5 km depth at 14 km distance N from the volcano.
Earthquake details:
2.5 quake 29 mi northwest of Hilo, Hawaii County, USA, Dec 18, 2023 10:23 pm (Honolulu time) (14 km N)
All earthquakes at Mauna Kea

Ragang volcano (Mindanao): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 8 km distance E from the volcano.
Earthquake details:
2.1 quake 10.8 km west of Wao, Lanao del Sur, Mindanao Musulman, Philippines, Dec 20, 2023 01:14 am (Manila time) (8 km E)
All earthquakes at Ragang

Reykjanes volcano (Reykjanes Peninsula, Iceland): 58 earthquakes up to magnitude 3.0

Possible earthquake swarm: 58 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 7.3 and 0.0 km.
Earthquake details: (only 5 largest)
3.0 quake 3.1 Km NNE of Grindavík Dec 19, 2023 12:12 am (Reykjavik time) (6 km ESE)
2.2 quake 2.8 Km NNE of Grindavík Dec 19, 2023 12:08 am (Reykjavik time) (6 km ESE)
2.0 quake 2.3 Km NE of Grindavík Dec 19, 2023 12:22 am (Reykjavik time) (7 km SE)
2.0 quake 2.9 Km NNE of Grindavík Dec 19, 2023 12:24 am (Reykjavik time) (6 km ESE)
2.0 quake 3.5 Km NNE of Grindavík Dec 19, 2023 12:04 am (Reykjavik time) (6 km ESE)
All earthquakes at Reykjanes

Sabancaya volcano (Peru): magnitude 3.6 earthquake

A magnitude 3.6 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.0 km depth at 5 km distance SE from the volcano.
Earthquake details:
3.6 quake Provincia de Caylloma, 69 km northwest of Selva Alegre, Arequipa, Peru, Dec 19, 2023 02:52 am (GMT +0) (5 km SE)
All earthquakes at Sabancaya

Talagabodas volcano (West Java): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 10 km distance WNW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 71 km southwest of Sumber, Kabupaten Cirebon, West Java, Indonesia, Dec 19, 2023 01:44 pm (GMT +7) (10 km WNW)
All earthquakes at Talagabodas

Terceira volcano (Azores): 12 earthquakes up to magnitude 3.3

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 5 hours, the last being recorded quake 1 hour 5 minutes ago. Hypocenter depths ranged between 1.3 and 0.0 km.
Earthquake details: (only 5 largest)
3.3 quake 15 km northwest of Angra do Heroismo, Azores, Portugal, Dec 19, 2023 05:06 pm (Azores time) (2 km NW)
2.7 quake 15 km northwest of Angra do Heroismo, Azores, Portugal, Dec 19, 2023 06:34 pm (Azores time) (2 km NW)
2.6 quake North Atlantic Ocean, 21 km northwest of Terceira Island, Azores, Portugal, Dec 19, 2023 09:44 pm (Azores time) (12 km NW)
2.6 quake North Atlantic Ocean, 15 km west of Terceira Island, Azores, Portugal, Dec 19, 2023 05:00 pm (Azores time) (6 km WNW)
2.5 quake North Atlantic Ocean, 15 km northwest of Terceira Island, Azores, Portugal, Dec 19, 2023 06:31 pm (Azores time) (6 km NW)
All earthquakes at Terceira
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/229056/Volcano-earthquake-report-for-Tuesday-19-Dec-2023.html