Volcano earthquake report for Tuesday, 28 Dec 2021
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 28 Dec 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Bardarbunga (1 quake mag 1.6), Clear Lake (3 quakes between mag 0.9-2.2), Coso (9 quakes between mag 0.5-1.5), Etna (3 quakes between mag 1.2-1.6), Eyafjallajökull (2 quakes between mag 1.6-2.3), Fagradalsfjall (18 quakes between mag 0.1-2.6)
Katla (2 quakes between mag 0.2-1.1), Kilauea (2 quakes between mag 1.8-1.8), Krísuvík (137 quakes between mag 0.1-3.5), La Palma (6 quakes between mag 0.9-2.3), Makaturing (1 quake mag 2.7), Maunaloa (1 quake mag 1.8), Mayotte Island (1 quake mag 1.4), Merapi (1 quake mag 3.0), Norikura (1 quake mag 2.5), Prestahnukur (2 quakes between mag 0.9-1.3), Reykjanes (6 quakes between mag 0.1-1.5), Salton Buttes (1 quake mag 1.3), Sibualbuali (1 quake mag 3.5), Sousaki (2 quakes between mag 1.1-1.7), Tenerife (4 quakes between mag 0.6-1.4), Tindfjallajökull (1 quake mag 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): 3 earthquakes up to magnitude 2.2

3 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 1.9 and 0.8 km.
Earthquake details:
2.2 quake 4km NW of The Geysers, CA, Dec 28, 2021 12:29 am (GMT -8) (19 km S)1.2 quake 10km WNW of The Geysers, CA, Dec 27, 2021 8:30 pm (GMT -8) (18 km SSW)0.9 quake 2km NNE of The Geysers, CA, Dec 28, 2021 3:31 am (GMT -8) (19 km S)All earthquakes at Clear Lake

Eyafjallajökull volcano (Iceland): 2 earthquakes up to magnitude 2.3

2 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 15 hours ago. Hypocenter depths ranged between 1.1 and 1.1 km.
Earthquake details:
2.3 quake Iceland: 2.0 Km S of Básar Dec 28, 2021 9:08 am (GMT +0) (8 km ENE)1.6 quake Iceland: 7.2 Km WSW of Goðabunga Dec 28, 2021 12:15 am (GMT +0) (12 km E)All earthquakes at Eyafjallajökull

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 18 earthquakes up to magnitude 2.6

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 53 minutes ago. Hypocenter depths ranged between 12.7 and 2.6 km.
Earthquake details: (only 5 largest)
2.6 quake Iceland: 2.3 Km E of Fagradalsfjall Dec 28, 2021 4:59 am (GMT +0) (3 km NE)1.8 quake Iceland: 3.1 Km ENE of Grindavík Dec 28, 2021 10:23 am (GMT +0) (7 km SW)1.5 quake Iceland: 2.4 Km ENE of Fagradalsfjall Dec 28, 2021 8:12 pm (GMT +0) (3 km NE)0.8 quake Iceland: 2.9 Km ENE of Fagradalsfjall Dec 28, 2021 10:52 pm (GMT +0) (3 km NE)0.7 quake Iceland: 2.3 Km SSE of Fagradalsfjall Dec 28, 2021 4:09 am (GMT +0) (1 km SSE)All earthquakes at Fagradalsfjall

Krísuvík volcano (Reykjanes Peninsula, Iceland): 137 earthquakes up to magnitude 3.5

Possible earthquake swarm: 137 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 30 minutes ago. Hypocenter depths ranged between 11.8 and 1.1 km.
Earthquake details: (only 5 largest)
3.5 quake Hafnarfjarðarkaupstaður, 24 km south of Reykjavik, Iceland, Dec 28, 2021 2:29 pm (GMT +0) (3 km E)3.4 quake Iceland: 3.8 Km N of Krýsuvík Dec 28, 2021 6:25 am (GMT +0) (2 km ESE)2.9 quake Iceland: 4.1 Km NE of Krýsuvík Dec 28, 2021 12:14 am (GMT +0) (4 km ESE)2.9 quake Iceland: 5.2 Km N of Krýsuvík Dec 28, 2021 12:32 am (GMT +0) (3 km E)2.6 quake Iceland: 4.1 Km N of Krýsuvík Dec 28, 2021 6:24 am (GMT +0) (2 km ESE)All earthquakes at Krísuvík

La Palma volcano (Canary Islands): 6 earthquakes up to magnitude 2.3

6 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 40 minutes ago. Hypocenter depths ranged between 16.0 and 1.0 km.
Earthquake details: (only 5 largest)
2.3 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Dec 28, 2021 11:10 pm (GMT +0) (3 km SSW)2.0 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Dec 28, 2021 5:49 pm (GMT +0) (4 km S)1.9 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Dec 28, 2021 10:08 pm (GMT +0) (2 km SSW)1.3 quake Spain: S TAZACORTE.ILP Dec 28, 2021 3:44 am (GMT +0) (10 km WNW)1.0 quake Spain: SW EL PASO.ILP Dec 28, 2021 10:33 pm (GMT +0) (8 km NW)All earthquakes at La Palma

Makaturing volcano (Mindanao): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 1 hour 3 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 6 km distance ESE from the volcano.
Earthquake details:
2.7 quake Province of Maguindanao, 46 km north of Cotabato City, Philippines, Dec 29, 2021 6:47 am (GMT +8) (6 km ESE)All earthquakes at Makaturing

Merapi volcano (Central Java): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 5 km distance N from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 19 km south of Salatiga, Central Java, Indonesia, Dec 28, 2021 3:20 pm (GMT +7) (5 km N)All earthquakes at Merapi

Norikura volcano (Honshu): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 1 hour 41 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 6.1 km depth at 7 km distance ENE from the volcano.
Earthquake details:
2.5 quake 32 km southwest of Matsumoto, Nagano, Japan, Dec 29, 2021 7:08 am (GMT +9) (7 km ENE)All earthquakes at Norikura

Sibualbuali volcano (Sumatra): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance SSE from the volcano.
Earthquake details:
3.5 quake 7.8 km northeast of Padangsidempuan, North Sumatra, Indonesia, Dec 29, 2021 2:39 am (GMT +7) (16 km SSE)All earthquakes at Sibualbuali
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