Volcano earthquake report for Monday, 1 Jun 2026

Quakes detected near: Bardarbunga (12 quakes between mag 0.0-1.9), Bibinoi (1 quake mag 3.3), Brennisteinsfjöll (10 quakes between mag 0.0-1.2), Campi Flegrei (Phlegrean Fields) (20 quakes between mag 0.1-3.0), Clear Lake (40 quakes between mag 0.3-2.6), Coso (2 quakes between mag 1.0-1.4)
Eldey (7 quakes between mag 0.6-1.7), Fourpeaked (1 quake mag 1.1), Golden Trout Creek (1 quake mag 1.0), Grímsnes (2 quakes between mag 0.6-1.4), Hekla (2 quakes between mag 0.2-1.5), Hengill (27 quakes between mag 0.0-1.3), Hrómundartindur (161 quakes between mag 0.0-2.9), Katla (11 quakes between mag 0.0-2.4), Kilauea (2 quakes between mag 1.7-1.8), Krakatau (1 quake mag 2.6), Krísuvík (5 quakes between mag 0.2-1.4), La Palma (1 quake mag 1.7), Lipari (1 quake mag 1.8), Loihi (1 quake mag 2.2), Loki-Fögrufjöll volcano (1 quake mag 1.0), Maipo (1 quake mag 2.8), Matutum (1 quake mag 2.4), Methana (1 quake mag 2.1), Poco Leok (1 quake mag 2.0), Prestahnukur (20 quakes between mag 0.7-2.0), Reporoa (1 quake mag 1.7), Salton Buttes (5 quakes between mag 1.2-1.6), San Cristobal (1 quake mag 2.8), Santo Tomas (1 quake mag 3.7), Stepovak Bay 4 (1 quake mag 2.0), Vatnafjöll (2 quakes between mag 0.5-1.1) (updated 03h50)

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:

Bardarbunga volcano (Iceland): 12 earthquakes up to magnitude 1.9

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 12.80 and 0.00 km.
Earthquake details: (only 5 largest)
1.9 quake 6.7 km ENE of Bárðarbunga May 31, 2026 07:01 am (Universal Time) (8 km ENE)
1.5 quake 6.4 km ENE of Bárðarbunga May 31, 2026 10:00 am (Universal Time) (7 km ENE)
1.2 quake 3.8 km SW of Bárðarbunga May 31, 2026 12:31 pm (Universal Time) (2 km SW)
1.1 quake Iceland: 4.6 km SE of Bárðarbunga Jun 1, 2026 12:26 am (Reykjavik time) (4 km ESE)
0.7 quake Iceland: 7.4 km E of Bárðarbunga May 31, 2026 10:27 am (Reykjavik time) (8 km ENE)
All earthquakes at Bardarbunga

Bibinoi volcano (Halmahera): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.00 km depth at 19 km distance WNW from the volcano.
Earthquake details:
3.3 quake 13 km southeast of Labuha, Kabupaten Halmahera Selatan, North Maluku, Indonesia, May 31, 2026 09:29 pm (GMT +9) (19 km WNW)
All earthquakes at Bibinoi

Campi Flegrei (Phlegrean Fields) volcano (Italy): 20 earthquakes up to magnitude 3.0

Possible earthquake swarm: 20 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 1 hour 55 minutes ago. Hypocenter depths ranged between 10.00 and 0.54 km.
Earthquake details: (only 5 largest)
Reported seismic-like event (likely no quake): 3.9 km north of Naples, Napoli, Campania, Italy, Jun 1, 2026 01:34 am (GMT +2) (12 km ENE)
1.9 quake 12 km west of Naples, Napoli, Campania, Italy, May 31, 2026 06:47 pm (GMT +2) (1 km WNW)
0.8 quake 4.4 km west of Fuorigrotta, Napoli, Campania, Italy, May 31, 2026 08:10 pm (GMT +2) (1 km ESE)
0.7 quake 2.3 km northwest of Bagnoli, Napoli, Campania, Italy, Jun 1, 2026 03:54 am (GMT +2) (1 km ESE)
0.6 quake Tyrrhenian Sea, 19 km northeast of Isola d'Ischia Island, Italy, May 31, 2026 04:54 pm (GMT +2) (4 km WSW)
All earthquakes at Campi Flegrei (Phlegrean Fields)

Clear Lake volcano (California): 40 earthquakes up to magnitude 2.6

Possible earthquake swarm: 40 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 3.79 and 0.96 km.
Earthquake details: (only 5 largest)
2.6 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, May 31, 2026 01:33 pm (GMT -7) (18 km SSW)
2.1 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, May 31, 2026 06:41 am (GMT -7) (17 km S)
1.9 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, May 31, 2026 01:59 pm (GMT -7) (17 km S)
1.7 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, May 31, 2026 01:00 am (GMT -7) (17 km SSW)
1.6 quake 12 mi southwest of Clearlake, Lake County, California, United States, May 31, 2026 11:10 am (GMT -7) (15 km S)
All earthquakes at Clear Lake

Hengill volcano (Iceland): 27 earthquakes up to magnitude 1.3

Possible earthquake swarm: 27 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 20.90 and 0.00 km.
Earthquake details: (only 5 largest)
1.3 quake 4.1 km SW of Eiturhóll May 31, 2026 07:12 pm (Universal Time) (11 km SW)
1.0 quake Iceland: 4.1 km WSW of Eiturhóll May 31, 2026 06:03 pm (Reykjavik time) (11 km SW)
0.9 quake Iceland: 3.6 km NNE of Eiturhóll May 31, 2026 06:31 pm (Reykjavik time) (4 km SW)
0.8 quake Iceland: 2.2 km NNW of Litla_Kaffistofan May 31, 2026 07:01 am (Reykjavik time) (15 km SW)
0.8 quake Iceland: 3.3 km SW of Eiturhóll May 31, 2026 07:58 pm (Reykjavik time) (10 km SW)
All earthquakes at Hengill

Hrómundartindur volcano (Iceland): 161 earthquakes up to magnitude 2.9

Possible earthquake swarm: 161 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 20 minutes ago. Hypocenter depths ranged between 9.30 and 0.00 km.
Earthquake details: (only 5 largest)
2.9 quake South, 23 km east of Reykjavik, Capital Region, Iceland, May 31, 2026 05:01 pm (Reykjavik time) (12 km W)
2.9 quake South, 22 km east of Reykjavik, Capital Region, Iceland, May 31, 2026 06:28 pm (Reykjavik time) (13 km W)
2.8 quake South, 22 km east of Reykjavik, Capital Region, Iceland, May 31, 2026 06:55 am (Reykjavik time) (13 km W)
2.6 quake 1.2 km ENE of Litla_Kaffistofan May 31, 2026 04:26 pm (Universal Time) (13 km W)
2.5 quake 2.1 km NE of Litla_Kaffistofan May 31, 2026 11:08 pm (Universal Time) (13 km W)
All earthquakes at Hrómundartindur

Katla volcano (Iceland): 11 earthquakes up to magnitude 2.4

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 6.00 and 0.00 km.
Earthquake details: (only 5 largest)
2.4 quake Iceland: 7.6 km NNW of Goðabunga May 31, 2026 06:06 pm (Reykjavik time) (14 km NW)
2.0 quake Iceland: 7.6 km SSW of Hábunga May 31, 2026 09:17 am (Reykjavik time) (14 km SSW)
1.9 quake Iceland: 4.9 km NW of Hábunga May 31, 2026 09:17 am (Reykjavik time) (6 km WSW)
1.4 quake 4.8 km NNW of Hábunga May 31, 2026 09:19 am (Universal Time) (5 km WSW)
1.1 quake Iceland: 2.7 km NNW of Hábunga May 31, 2026 11:56 pm (Reykjavik time) (5 km SW)
All earthquakes at Katla

Krakatau volcano (Sunda Strait): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 1 km distance NNW from the volcano.
Earthquake details:
2.6 quake Indian Ocean, 18 km southwest of Pulau Sebesi Island, Lampung, Indonesia, Jun 1, 2026 03:14 am (GMT +7) (1 km NNW)
All earthquakes at Krakatau

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

A magnitude 2.2 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 29.95 km depth at 17 km distance NW from the volcano.
Earthquake details:
2.2 quake North Pacific Ocean, 13 mi southeast of Pāhala, Hawaii County, Hawaii, United States, May 30, 2026 09:27 pm (GMT -10) (17 km NW)
All earthquakes at Loihi

Maipo volcano (Central Chile and Argentina): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 15.60 km depth at 9 km distance SSW from the volcano.
Earthquake details:
2.8 quake 96 km southeast of Puente Alto, Cordillera, Santiago Metropolitan, Chile, May 31, 2026 10:35 am (GMT -4) (9 km SSW)
All earthquakes at Maipo

Matutum volcano (Mindanao): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 32.00 km depth at 2 km distance WNW from the volcano.
Earthquake details:
2.4 quake 12 km northeast of Tupi, Province of South Cotabato, Soccsksargen, Philippines, May 31, 2026 06:22 pm (GMT +8) (2 km WNW)
All earthquakes at Matutum

Methana volcano (Greece): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.00 km depth at 9 km distance SE from the volcano.
Earthquake details:
2.1 quake Aegean Sea, 7.1 km northwest of Nisos Poros Island, Greece, May 31, 2026 08:18 am (GMT +3) (9 km SE)
All earthquakes at Methana

Prestahnukur volcano (Iceland): 20 earthquakes up to magnitude 2.0

Possible earthquake swarm: 20 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 14.10 and 0.00 km.
Earthquake details: (only 5 largest)
2.0 quake Iceland: 14.6 km SSE of Húsafell May 31, 2026 05:23 pm (Reykjavik time) (10 km WSW)
1.8 quake 14.3 km N of Skjaldbreið May 31, 2026 05:46 am (Universal Time) (12 km SW)
1.8 quake 14.6 km SSE of Húsafell May 31, 2026 01:51 pm (Universal Time) (10 km WSW)
1.8 quake 14.6 km SSE of Húsafell May 31, 2026 07:29 am (Universal Time) (10 km WSW)
1.7 quake 14.7 km SSE of Húsafell May 31, 2026 05:39 am (Universal Time) (11 km WSW)
All earthquakes at Prestahnukur

San Cristobal volcano (Nicaragua): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.00 km depth at 5 km distance E from the volcano.
Earthquake details:
2.8 quake 20 km northeast of Chinandega, Departamento de Chinandega, Nicaragua, May 30, 2026 11:12 pm (GMT -6) (5 km E)
All earthquakes at San Cristobal

Santo Tomas volcano (Luzon Island): magnitude 3.7 earthquake

A magnitude 3.7 earthquake occurred at the volcano 24 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 12 km distance SE from the volcano.
Earthquake details:
3.7 quake 19 km south of Baguio, Philippines, May 31, 2026 11:58 am (GMT +8) (12 km SE)
All earthquakes at Santo Tomas
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/303849/Volcano-earthquake-report-for-Monday-1-Jun-2026.html