Volcano earthquake report for Monday, 31 May 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 31 May 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Campi Flegrei (Phlegrean Fields) (13 quakes between mag 1.0-3.0), Clear Lake (32 quakes between mag 0.2-2.2), Coso (5 quakes between mag 0.3-1.4), Eldey (2 quakes between mag 0.2-1.1), Etna (3 quakes between mag 3.0-3.0), Eyafjallajökull (1 quake mag 1.3)
Katla (2 quakes between mag 0.5-2.1), Kilauea (5 quakes between mag 1.7-1.9), Krísuvík (8 quakes between mag 0.6-2.5), Kverkfjöll (1 quake mag 1.4), Loihi (1 quake mag 1.8), Maunaloa (1 quake mag 2.2), Nevados Casiri (1 quake mag 4.6), Nisyros (8 quakes between mag 1.5-2.2), Nyiragongo (1 quake mag 3.0), Paricutín (Michoacán-Guanajuato) (9 quakes between mag 3.6-3.9), Penguin Island (11 quakes between mag 2.5-3.9), Tenerife (1 quake mag 1.4), Vulcano (1 quake mag 3.0), Öraefajökull (3 quakes between mag 0.1-1.1) (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:


Campi Flegrei (Phlegrean Fields) volcano (Italy): 13 earthquakes up to magnitude 3.0

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 48 minutes, the last being recorded quake 1 hour 43 minutes ago. Hypocenter depths ranged between 10.0 and 1.0 km.
Earthquake details: (only 5 largest)
Reported (unconfirmed) earthquake: 14 km west of nepalasa, Naples, Campania, Italy, 31 May 2021 21:37 GMT (4 km WNW)1.8 quake 3.8 km southwest of Pianura, Naples, Campania, Italy, 31 May 2021 21:32 GMT (2 km NNW)1.7 quake 4 km southwest of Pianura, Naples, Campania, Italy, 31 May 2021 21:38 GMT (1 km NNW)1.4 quake Italy: Campi Flegrei 31 May 2021 21:22 GMT (2 km N)1.3 quake Italy: Campi Flegrei 31 May 2021 21:33 GMT (1 km N)All earthquakes at Campi Flegrei (Phlegrean Fields)

Clear Lake volcano (California): 32 earthquakes up to magnitude 2.2

Possible earthquake swarm: 32 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 47 minutes ago. Hypocenter depths ranged between 3.3 and 0.1 km.
Earthquake details: (only 5 largest)
2.2 quake 6km WNW of The Geysers, CA, 31 May 2021 18:44 GMT (19 km SSW)1.8 quake 3km SW of Cobb, CA, 31 May 2021 02:33 GMT (18 km S)1.4 quake 10km NW of The Geysers, CA, 31 May 2021 01:42 GMT (16 km SSW)1.2 quake 10km WNW of The Geysers, CA, 31 May 2021 23:03 GMT (18 km SSW)1.1 quake 2km SW of Cobb, CA, 31 May 2021 21:36 GMT (18 km S)All earthquakes at Clear Lake

Etna volcano (Italy): 3 earthquakes up to magnitude 3.0

3 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 10.0 and 10.0 km.
Earthquake details:
Unconfirmed quake reported: 30 km north of Catina, Catania, Sicily, Italy, 31 May 2021 18:14 GMT (0 km SW)Unconfirmed quake reported: 30 km north of Catina, Catania, Sicily, Italy, 31 May 2021 07:43 GMT (0 km SW)Unconfirmed quake reported: 30 km north of Catina, Catania, Sicily, Italy, 31 May 2021 07:03 GMT (0 km SW)All earthquakes at Etna

Katla volcano (Iceland): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 4.3 and 0.1 km.
Earthquake details:
2.1 quake Iceland: 4.7 Km NNW of Goðabunga 31 May 2021 17:38 GMT (13 km WNW)0.5 quake Iceland: 3.9 Km SE of Goðabunga 31 May 2021 08:36 GMT (7 km WSW)All earthquakes at Katla

Krísuvík volcano (Reykjanes Peninsula, Iceland): 8 earthquakes up to magnitude 2.5

8 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 11 hours ago. Hypocenter depths ranged between 5.9 and 0.8 km.
Earthquake details: (only 5 largest)
2.5 quake Iceland: 5.5 Km NE of Krýsuvík 31 May 2021 09:17 GMT (5 km E)2.0 quake Iceland: 4.2 Km N of Krýsuvík 31 May 2021 09:17 GMT (5 km ESE)1.6 quake Iceland: 5.2 Km NE of Krýsuvík 31 May 2021 09:17 GMT (5 km E)1.3 quake Iceland: 3.5 Km NE of Krýsuvík 31 May 2021 09:07 GMT (4 km ESE)1.2 quake Iceland: 2.9 Km NNE of Krýsuvík 31 May 2021 12:25 GMT (3 km SE)All earthquakes at Krísuvík

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.5 km depth at 5 km distance SSW from the volcano.
Earthquake details:
2.2 quake 25 Km E of Honaunau-Napoopoo, Hawaii, 31 May 2021 08:35 GMT (5 km SSW)All earthquakes at Maunaloa

Nevados Casiri volcano (Peru): magnitude 4.6 earthquake

A magnitude 4.6 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance W from the volcano.
Earthquake details:
4.6 quake Provincia de Tarata, 69 km northeast of Tacna, Peru, 31 May 6:15 am (GMT -5) (16 km W)All earthquakes at Nevados Casiri

Nisyros volcano (Greece): 8 earthquakes up to magnitude 2.2

8 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 29 minutes ago. Hypocenter depths ranged between 14.9 and 5.0 km.
Earthquake details: (only 5 largest)
2.2 quake Aegean Sea, 45 km south of Kos Town, Dodecanese, South Aegean, Greece, 31 May 2021 21:29 GMT (8 km SSW)2.1 quake Aegean Sea, 48 km south of Kos Town, Dodecanese, South Aegean, Greece, 31 May 2021 12:27 GMT (15 km SE)1.9 quake Aegean Sea, 91 km west of Rhodes, Dodecanese, South Aegean, Greece, 31 May 2021 23:21 GMT (18 km S)1.9 quake Aegean Sea, 91 km west of Rhodes, Dodecanese, South Aegean, Greece, 31 May 2021 09:50 GMT (17 km S)1.8 quake Aegean Sea, 50 km south of Kos Town, Dodecanese, South Aegean, Greece, 31 May 2021 22:57 GMT (13 km SSW)All earthquakes at Nisyros

Nyiragongo volcano (Democratic Republic of Congo (DRC)): 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 10.0 km depth at 18 km distance S from the volcano.
Earthquake details:
Unconfirmed quake reported: 3.6 km south of Goma, Nord Kivu, Congo - Kinshasa, 31 May 2021 13:44 GMT (18 km S)All earthquakes at Nyiragongo

Paricutín (Michoacán-Guanajuato) volcano (Western & Central Mexico): 9 earthquakes up to magnitude 3.9

9 earthquakes occurred near (under) the volcano during 1 hour 39 minutes, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 14.0 and 4.0 km.
Earthquake details: (only 5 largest)
3.9 quake Tancitaro, 32 km west of Uruapan, Michoacan, Mexico, 2021-05-31 03:14:08 (Hora de México) (15 km SW)3.8 quake Nuevo Parangaricutiro, 25 km west of Uruapan, Michoacan, Mexico, 2021-05-31 04:36:01 (Hora de México) (7 km SW)3.8 quake Nuevo Parangaricutiro, 20 km west of Uruapan, Michoacan, Mexico, 2021-05-31 04:21:29 (Hora de México) (11 km S)3.8 quake Tancitaro, 25 km west of Uruapan, Michoacan, Mexico, 2021-05-31 03:53:37 (Hora de México) (15 km SSW)3.8 quake Tancitaro, 24 km west of Uruapan, Michoacan, Mexico, 2021-05-31 03:23:30 (Hora de México) (18 km S)All earthquakes at Paricutín (Michoacán-Guanajuato)

Penguin Island volcano (Antarctica): 11 earthquakes up to magnitude 3.9

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 13.1 and 7.7 km.
Earthquake details: (only 5 largest)
3.9 quake South Atlantic Ocean, Antarctica, 31 May 2021 13:33 GMT (12 km SW)3.8 quake Antarctica: 41 Km Al E De Base Frei, Antártica, 31 May 2021 11:44 GMT (14 km W)3.6 quake South Atlantic Ocean, Antarctica, 31 May 2021 13:27 GMT (15 km SW)3.3 quake South Atlantic Ocean, Antarctica, 31 May 2021 13:39 GMT (13 km SW)3.3 quake South Atlantic Ocean, Antarctica, 31 May 2021 13:32 GMT (13 km SW)All earthquakes at Penguin Island

Vulcano volcano (Eolian Islands): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.8 km depth at 10 km distance SW from the volcano.
Earthquake details:
3.0 quake Tyrrhenian Sea, 16 km south of Lipari Island, Sicily, Italy, 31 May 2021 13:16 GMT (10 km SW)All earthquakes at Vulcano
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