Volcano earthquake report for Friday, 7 May 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 7 May 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Askja (3 quakes between mag 0.1-1.0), Bardarbunga (5 quakes between mag 0.1-1.0), Brennisteinsfjöll (4 quakes between mag 0.3-2.7), Campi Flegrei (Phlegrean Fields) (3 quakes between mag 0.2-1.0), Clear Lake (32 quakes between mag 0.4-2.0), Coso (6 quakes between mag 0.3-1.3)
Eldey (1 quake mag 1.3), Etna (3 quakes between mag 1.1-1.5), Fagradalsfjall (17 quakes between mag 0.1-1.7), Hengill (11 quakes between mag 0.3-2.5), Katla (2 quakes between mag 0.2-2.7), Kilauea (1 quake mag 1.9), Martin (1 quake mag 1.8), Maunaloa (2 quakes between mag 0.8-1.9), Ndete Napu (1 quake mag 1.0), Nisyros (6 quakes between mag 1.6-2.9), North Sister (1 quake mag 1.6), Prestahnukur (5 quakes between mag 0.7-1.5), Reykjanes (6 quakes between mag 0.1-1.3), Rinjani (1 quake mag 3.6), Sabancaya (1 quake mag 3.6), San Miguel (1 quake mag 3.3), Snowy Mountain (1 quake mag 1.7), Süphan Dağ (1 quake mag 2.4), Tandikat (1 quake mag 2.1), Taupo (1 quake mag 1.2), Tjörnes Fracture Zone (3 quakes between mag 0.8-1.1) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 20 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:


Brennisteinsfjöll volcano (Reykjanes Peninsula, Iceland): 4 earthquakes up to magnitude 2.7

4 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 7.4 and 0.2 km.
Earthquake details:
2.7 quake 8.4 Km WSW of Raufarhólshellir, Iceland, 7 May 2021 12:06 GMT (14 km E)0.7 quake 8.4 Km WNW of Þorlákshöfn, Iceland, 7 May 2021 08:37 GMT (15 km ESE)0.6 quake 9.5 Km SW of Bláfjallaskáli, Iceland, 7 May 2021 00:50 GMT (2 km E)0.3 quake 9.6 Km SW of Bláfjallaskáli, Iceland, 7 May 2021 01:50 GMT (2 km E)All earthquakes at Brennisteinsfjöll

Clear Lake volcano (California): 32 earthquakes up to magnitude 2.0

Possible earthquake swarm: 32 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 33 minutes ago. Hypocenter depths ranged between 5.3 and 0.4 km.
Earthquake details: (only 5 largest)
2.0 quake 6km NW of The Geysers, CA, USA, 7 May 2021 02:54 GMT (18 km S)2.0 quake 6km NNW of The Geysers, CA, USA, 7 May 2021 18:03 GMT (17 km S)1.8 quake 13km NW of The Geysers, CA, USA, 7 May 2021 00:12 GMT (17 km SSW)1.4 quake 13km NW of The Geysers, CA, USA, 7 May 2021 19:56 GMT (17 km SSW)1.4 quake 7km WNW of The Geysers, CA, USA, 7 May 2021 14:19 GMT (18 km SSW)All earthquakes at Clear Lake

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 17 earthquakes up to magnitude 1.7

Possible earthquake swarm: 17 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 1 hour 49 minutes ago. Hypocenter depths ranged between 9.8 and 0.1 km.
Earthquake details: (only 5 largest)
1.7 quake 4.6 Km NE of Grindavík, Iceland, 7 May 2021 06:56 GMT (6 km WSW)1.4 quake 4.5 Km NNE of Grindavík, Iceland, 7 May 2021 06:55 GMT (6 km WSW)1.3 quake 2.2 Km NE of Fagradalsfjall, Iceland, 7 May 2021 17:41 GMT (3 km NNE)0.9 quake 3.2 Km ENE of Fagradalsfjall, Iceland, 7 May 2021 14:15 GMT (4 km NE)0.8 quake 4.6 Km NNE of Grindavík, Iceland, 7 May 2021 04:32 GMT (6 km WSW)All earthquakes at Fagradalsfjall

Hengill volcano (Iceland): 11 earthquakes up to magnitude 2.5

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 6.6 and 3.7 km.
Earthquake details: (only 5 largest)
2.5 quake 2.6 Km E of Eiturhóll, Iceland, 7 May 2021 00:03 GMT (6 km SSW)1.1 quake 2.3 Km ESE of Eiturhóll, Iceland, 7 May 2021 21:41 GMT (6 km SSW)1.1 quake 2.4 Km E of Eiturhóll, Iceland, 7 May 2021 20:12 GMT (6 km SSW)1.1 quake 3.3 Km ESE of Eiturhóll, Iceland, 7 May 2021 19:30 GMT (7 km S)0.8 quake 2.4 Km E of Eiturhóll, Iceland, 7 May 2021 04:29 GMT (6 km SSW)All earthquakes at Hengill

Katla volcano (Iceland): 2 earthquakes up to magnitude 2.7

2 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 9.4 and 0.1 km.
Earthquake details:
2.7 quake 8.6 Km N of Hábunga, Iceland, 7 May 2021 20:46 GMT (2 km NNW)0.2 quake 5.7 Km ENE of Goðabunga, Iceland, 7 May 2021 04:36 GMT (5 km WNW)All earthquakes at Katla

Nisyros volcano (Greece): 6 earthquakes up to magnitude 2.9

6 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 11.2 and 5.0 km.
Earthquake details: (only 5 largest)
2.9 quake Aegean Sea, 49 km south of Kos Town, Dodecanese, South Aegean, Greece, 7 May 2021 16:24 GMT (16 km SSW)2.2 quake Aegean Sea, 55 km south of Kos Town, Dodecanese, South Aegean, Greece, 7 May 2021 14:40 GMT (19 km S)2.0 quake Aegean Sea, 52 km south of Kos Town, Dodecanese, South Aegean, Greece, 7 May 2021 01:36 GMT (16 km SSW)1.7 quake Aegean Sea, 50 km south of Kos Town, Dodecanese, South Aegean, Greece, 7 May 2021 11:47 GMT (16 km SSE)1.7 quake Aegean Sea, 94 km west of Rhodes, Dodecanese, South Aegean, Greece, 7 May 2021 07:06 GMT (15 km S)All earthquakes at Nisyros

Rinjani volcano (Lombok): magnitude 3.6 earthquake

A magnitude 3.6 earthquake occurred at the volcano 12 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 10 km distance N from the volcano.
Earthquake details:
3.6 quake 48 km northeast of Mataram, Indonesia, 7 May 2021 23:37 GMT (10 km N)All earthquakes at Rinjani

Sabancaya volcano (Peru): magnitude 3.6 earthquake

A magnitude 3.6 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.0 km depth at 14 km distance E from the volcano.
Earthquake details:
3.6 quake Provincia de Caylloma, 69 km north of Arequipa, Peru, 7 May 2021 03:30 GMT (14 km E)All earthquakes at Sabancaya

San Miguel volcano (El Salvador): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 7 km distance WSW from the volcano.
Earthquake details:
3.3 quake 17 km southwest of San Miguel, El Salvador, 2021-05-06 19:56:26 (7 km WSW)All earthquakes at San Miguel

Süphan Dağ volcano (Turkey): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.0 km depth at 18 km distance ENE from the volcano.
Earthquake details:
2.4 quake Bitlis, 29 km west of Erciş, Van, Turkey, 7 May 2021 15:25 GMT (18 km ENE)All earthquakes at Süphan Dağ

Tandikat volcano (Sumatra): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 14 km distance WNW from the volcano.
Earthquake details:
2.1 quake 21 km southwest of Bukittinggi, West Sumatra, Indonesia, 7 May 2021 15:25 GMT (14 km WNW)All earthquakes at Tandikat
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