Volcano earthquake report for Monday, 10 May 2021

Quakes detected near: Cabalian (2 quakes between mag 2.1-2.5), Clear Lake (31 quakes between mag 0.4-2.1), Coso (4 quakes between mag 0.7-1.0), Eldey (2 quakes between mag 0.4-1.0), Etna (4 quakes between mag 1.0-1.3), Fourpeaked (1 quake mag 1.5)
Grímsvötn (1 quake mag 1.9), Irazu (2 quakes between mag 2.5-3.5), Kaguyak (1 quake mag 1.3), Kilauea (3 quakes between mag 0.7-2.4), Krísuvík (10 quakes between mag 0.1-1.2), Long Valley (10 quakes between mag 0.1-1.8), Mahagnao (3 quakes between mag 2.4-3.2), Nevados Casiri (1 quake mag 4.2), Nisyros (5 quakes between mag 1.8-2.6), Penguin Island (1 quake mag 2.7), Redoubt (2 quakes between mag 1.0-1.1), Sandal (1 quake mag 1.2), Tjörnes Fracture Zone (2 quakes between mag 0.5-1.2), Toba (3 quakes between mag 2.0-2.3) (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:

Cabalian volcano (Central Philippines): 2 earthquakes up to magnitude 2.5

2 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 13.0 and 1.0 km.
Earthquake details:
2.5 quake Philippines Sea, 8.9 km northeast of Liloan, Philippines, 11 May 2021 - 02:03 AM (PST) (9 km SW)
2.1 quake 15 km east of Sogod, Southern Leyte, Eastern Visayas, Philippines, 10 May 2021 - 07:57 AM (PST) (19 km NW)
All earthquakes at Cabalian

Clear Lake volcano (California): 31 earthquakes up to magnitude 2.1

Possible earthquake swarm: 31 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 19 minutes ago. Hypocenter depths ranged between 11.8 and 1.5 km.
Earthquake details: (only 5 largest)
2.1 quake 7km NW of The Geysers, CA, USA, 10 May 2021 23:20 GMT (18 km SSW)
1.3 quake 8km W of Cobb, CA, USA, 10 May 2021 19:45 GMT (16 km SSW)
1.2 quake 7km NW of The Geysers, CA, USA, 10 May 2021 05:11 GMT (18 km SSW)
1.2 quake 7km NW of The Geysers, CA, USA, 10 May 2021 16:40 GMT (16 km SSW)
1.2 quake 8km NW of The Geysers, CA, USA, 10 May 2021 16:59 GMT (16 km SSW)
All earthquakes at Clear Lake

Irazu volcano (Costa Rica): 2 earthquakes up to magnitude 3.5

2 earthquakes occurred near (under) the volcano during 43 seconds, the last being recorded quake 22 hours ago. Hypocenter depths ranged between 6.0 and 5.0 km.
Earthquake details:
3.5 quake Moravia, 23 km northeast of San Jose, San José, Costa Rica, 09 de mayo del 2021 7:25 pm (15 km NW)
2.5 quake Moravia, 22 km northeast of San Jose, San José, Costa Rica, 2021-05-09 19:25:43 (13 km NW)
All earthquakes at Irazu

Kilauea volcano (Hawai'i (Big Island)): 3 earthquakes up to magnitude 2.4

3 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 8.8 and 0.1 km.
Earthquake details:
2.4 quake 16 Km W of Volcano, Hawaii, USA, 10 May 2021 21:45 GMT (11 km WNW)
1.5 quake 9 Km NW of Volcano, Hawaii, USA, 10 May 2021 10:52 GMT (12 km N)
0.7 quake 5 Km SW of Volcano, Hawaii, USA, 10 May 2021 09:42 GMT (1 km ENE)
All earthquakes at Kilauea

Mahagnao volcano (Central Philippines): 3 earthquakes up to magnitude 3.2

3 earthquakes occurred near (under) the volcano during 20 minutes, the last being recorded quake 23 hours ago. Hypocenter depths ranged between 8.0 and 1.0 km.
Earthquake details:
3.2 quake 23 km east of Ormoc City, Province of Leyte, Eastern Visayas, Philippines, 10 May 2021 00:15 GMT (14 km NNW)
3.2 quake 22 km east of Ormoc City, Province of Leyte, Eastern Visayas, Philippines, 10 May 2021 - 08:27 AM (PST) (12 km NW)
2.4 quake 24 km east of Ormoc City, Province of Leyte, Eastern Visayas, Philippines, 10 May 2021 - 08:35 AM (PST) (13 km NW)
All earthquakes at Mahagnao

Nevados Casiri volcano (Peru): magnitude 4.2 earthquake

A magnitude 4.2 earthquake occurred at the volcano 16 hours 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:
4.2 quake Provincia de Tarata, 84 km northeast of Tacna, Peru, 10 May 2:34 am (GMT -5) (10 km N)
All earthquakes at Nevados Casiri

Nisyros volcano (Greece): 5 earthquakes up to magnitude 2.6

5 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 16.5 and 2.1 km.
Earthquake details:
2.6 quake Aegean Sea, 52 km south of Kos Town, Dodecanese, South Aegean, Greece, 10 May 2021 02:34 GMT (14 km SSW)
2.2 quake Aegean Sea, 40 km south of Kos Town, Dodecanese, South Aegean, Greece, 10 May 2021 09:41 GMT (6 km SE)
1.8 quake Aegean Sea, 95 km west of Rhodes, Dodecanese, South Aegean, Greece, 10 May 2021 15:17 GMT (16 km S)
1.8 quake Aegean Sea, 94 km west of Rhodes, Dodecanese, South Aegean, Greece, 10 May 2021 06:39 GMT (16 km S)
1.8 quake Aegean Sea, 48 km south of Kos Town, Dodecanese, South Aegean, Greece, 10 May 2021 01:33 GMT (12 km S)
All earthquakes at Nisyros

Penguin Island volcano (Antarctica): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.0 km depth at 17 km distance WSW from the volcano.
Earthquake details:
2.7 quake 39 Km Al E De Base Frei, Antártica, Antarctica, 10 May 2021 09:02 GMT (17 km WSW)
All earthquakes at Penguin Island

Toba volcano (Sumatra): 3 earthquakes up to magnitude 2.3

3 earthquakes occurred near (under) the volcano during 19 minutes, the last being recorded quake 1 hour 38 minutes ago. Hypocenter depths ranged between 10.0 and 10.0 km.
Earthquake details:
2.3 quake 20 km south of Tomok Bolon, Kabupaten Samosir, North Sumatra, Indonesia, 10 May 2021 21:53 GMT (15 km N)
2.0 quake 17 km south of Tomok Bolon, Kabupaten Samosir, North Sumatra, Indonesia, 10 May 2021 22:11 GMT (18 km N)
2.0 quake 16 km south of Tomok Bolon, Kabupaten Samosir, North Sumatra, Indonesia, 10 May 2021 21:55 GMT (19 km N)
All earthquakes at Toba