Volcano earthquake report for Wednesday, 3 Jun 2026

Quakes detected near: Bardarbunga (5 quakes between mag 0.2-1.0), Brennisteinsfjöll (52 quakes between mag 0.0-3.2), Campi Flegrei (Phlegrean Fields) (10 quakes between mag 0.1-1.4), Chaîne des Puys (1 quake mag 1.3), Clear Lake (12 quakes between mag 0.4-1.4), Cleveland (2 quakes between mag 0.8-1.2)
Coso (3 quakes between mag 0.4-1.4), Eldey (6 quakes between mag 0.6-1.5), Etna (4 quakes between mag 1.4-2.8), Eyafjallajökull (2 quakes between mag 0.4-1.3), Furnas (1 quake mag 3.0), Gareloi (2 quakes between mag 0.2-1.0), Grímsnes (2 quakes between mag 0.5-2.1), Grímsvötn (2 quakes between mag 0.2-1.0), Hakone (1 quake mag 2.9), Hengill (17 quakes between mag 0.0-1.1), Hrómundartindur (98 quakes between mag 0.0-1.8), Hualalai (1 quake mag 4.6), Katla (10 quakes between mag 0.0-1.4), Kilauea (1 quake mag 1.9), Kolumbo (1 quake mag 1.4), Ljósufjöll (9 quakes between mag 0.0-1.4), Loihi (1 quake mag 1.7), Loki-Fögrufjöll volcano (1 quake mag 2.0), Masaya (1 quake mag 2.5), Mayotte Island (1 quake mag 1.1), Miyake-shima (1 quake mag 3.1), Moffett (1 quake mag 1.6), Nemrut Dagi (1 quake mag 1.4), Northern EPR-Segment RO2 (1 quake mag 3.0), Okataina (Tarawera) (1 quake mag 1.8), Prestahnukur (68 quakes between mag 0.3-3.5), Salton Buttes (2 quakes between mag 0.8-1.6), San Salvador (1 quake mag 2.1), Stepovak Bay 4 (1 quake mag 2.1), Tana (2 quakes between mag 1.1-1.4), Tecuamburro (1 quake mag 2.3), Tenerife (1 quake mag 1.4), Vestmannaeyjar (1 quake mag 1.5), Vesuvius (1 quake mag 3.0) (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:

Brennisteinsfjöll volcano (Reykjanes Peninsula, Iceland): 52 earthquakes up to magnitude 3.2

Possible earthquake swarm: 52 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 42 minutes ago. Hypocenter depths ranged between 8.90 and 0.00 km.
Earthquake details: (only 5 largest)
3.2 quake 20 km southeast of Reykjavik, Capital Region, Iceland, Jun 3, 2026 10:40 am (Reykjavik time) (18 km NE)
2.2 quake 3.3 km SSW of Helgafell Jun 3, 2026 11:08 pm (Universal Time) (7 km NNW)
1.4 quake 4.1 km SW of Litla_Kaffistofan Jun 3, 2026 10:11 am (Universal Time) (18 km NE)
1.3 quake 4.0 km SW of Litla_Kaffistofan Jun 3, 2026 10:16 am (Universal Time) (18 km NE)
1.0 quake 3.9 km SW of Litla_Kaffistofan Jun 3, 2026 07:36 am (Universal Time) (18 km NE)
All earthquakes at Brennisteinsfjöll

Clear Lake volcano (California): 12 earthquakes up to magnitude 1.4

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 48 minutes ago. Hypocenter depths ranged between 15.41 and 1.03 km.
Earthquake details: (only 5 largest)
1.4 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Jun 2, 2026 11:16 pm (GMT -7) (19 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Jun 2, 2026 11:47 pm (GMT -7) (16 km S)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Jun 3, 2026 12:57 pm (GMT -7) (18 km SSW)
1.0 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Jun 3, 2026 04:02 pm (GMT -7) (16 km SSW)
1.0 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Jun 2, 2026 11:13 pm (GMT -7) (18 km SSW)
All earthquakes at Clear Lake

Etna volcano (Italy): 4 earthquakes up to magnitude 2.8

4 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 30.75 and 17.09 km.
Earthquake details:
2.8 quake 17 km northeast of Adrano, Catania, Sicily, Italy, Jun 3, 2026 04:07 pm (GMT +2) (5 km NW)
1.9 quake 9.6 km east of Bronte, Catania, Sicily, Italy, Jun 3, 2026 04:03 pm (GMT +2) (5 km WNW)
1.8 quake 7.3 km southeast of Bronte, Catania, Sicily, Italy, Jun 3, 2026 07:48 am (GMT +2) (9 km W)
1.4 quake 11 km east of Bronte, Catania, Sicily, Italy, Jun 3, 2026 04:13 pm (GMT +2) (4 km NW)
All earthquakes at Etna

Furnas volcano (Azores): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 7 km distance NNW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 28 km east of Ponta Delgada, Azores, Portugal, Jun 3, 2026 12:46 am (GMT +0) (7 km NNW)
All earthquakes at Furnas

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

2 earthquakes occurred near (under) the volcano during 58 minutes, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 0 and 0.00 km.
Earthquake details:
2.1 quake Iceland: 5.5 km E of Hveragerði Jun 3, 2026 10:05 am (Reykjavik time) (10 km WSW)
0.5 quake Iceland: 3.6 km NNW of Selfoss Jun 3, 2026 11:03 am (Reykjavik time) (11 km SW)
All earthquakes at Grímsnes

Hakone volcano (Honshu): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.80 km depth at 2 km distance SSW from the volcano.
Earthquake details:
2.9 quake 31 km southwest of Hiratsuka, Kanagawa, Japan, Jun 3, 2026 01:27 pm (GMT +9) (2 km SSW)
All earthquakes at Hakone

Hengill volcano (Iceland): 17 earthquakes up to magnitude 1.1

Possible earthquake swarm: 17 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 17.30 and 0.00 km.
Earthquake details: (only 5 largest)
1.1 quake Iceland: 6.6 km NW of Seljadalur Jun 3, 2026 07:50 am (Reykjavik time) (16 km W)
0.8 quake Iceland: 5.7 km SSW of Seljadalur Jun 3, 2026 05:28 pm (Reykjavik time) (18 km SW)
0.7 quake Iceland: 13.2 km NE of Geldinganes Jun 3, 2026 09:35 pm (Reykjavik time) (17 km WNW)
0.6 quake Iceland: 2.1 km W of Litla_Kaffistofan Jun 3, 2026 01:03 pm (Reykjavik time) (17 km SW)
0.5 quake Iceland: 3.3 km WNW of Litla_Kaffistofan Jun 3, 2026 10:02 am (Reykjavik time) (17 km SW)
All earthquakes at Hengill

Hrómundartindur volcano (Iceland): 98 earthquakes up to magnitude 1.8

Possible earthquake swarm: 98 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 27 minutes ago. Hypocenter depths ranged between 9.40 and 0.00 km.
Earthquake details: (only 5 largest)
1.8 quake 2.6 km ESE of Litla_Kaffistofan Jun 3, 2026 08:10 am (Universal Time) (13 km WSW)
1.5 quake 4.3 km E of Hveragerði Jun 3, 2026 01:02 pm (Universal Time) (9 km SSE)
1.0 quake 2.6 km ESE of Litla_Kaffistofan Jun 3, 2026 01:15 pm (Universal Time) (13 km WSW)
0.9 quake Iceland: 3.7 km WSW of Litla_Kaffistofan Jun 3, 2026 11:23 am (Reykjavik time) (18 km WSW)
0.9 quake Iceland: 0.5 km N of Hveradalir Jun 3, 2026 12:50 pm (Reykjavik time) (11 km WSW)
All earthquakes at Hrómundartindur

Hualalai volcano (Hawai'i (Big Island)): magnitude 4.6 earthquake

A magnitude 4.6 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 34.01 km depth at 19 km distance SW from the volcano.
Earthquake details:
4.6 quake North Pacific Ocean, 3.8 mi south of Kailua-Kona, Hawaii County, Hawaii, United States, Jun 2, 2026 05:58 pm (Honolulu time) (19 km SW)
All earthquakes at Hualalai

Masaya volcano (Nicaragua): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.00 km depth at 10 km distance N from the volcano.
Earthquake details:
2.5 quake Departamento de Masaya, 11 km southeast of Managua, Nicaragua, Jun 3, 2026 11:59 am (GMT -6) (10 km N)
All earthquakes at Masaya

Miyake-shima volcano (Izu Islands): magnitude 3.1 earthquake

A magnitude 3.1 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 20.00 km depth at 12 km distance W from the volcano.
Earthquake details:
3.1 quake Philippine Sea, 26 km southeast of Kozu Shima Island, Tokyo, Japan, Jun 4, 2026 06:00 am (GMT +9) (12 km W)
All earthquakes at Miyake-shima

Northern EPR-Segment RO2 volcano (Eastern Pacific Ocean): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 16 km distance SW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): Mexico Jun 3, 2026 05:20 pm (GMT +0) (16 km SW)
All earthquakes at Northern EPR-Segment RO2

Prestahnukur volcano (Iceland): 68 earthquakes up to magnitude 3.5

Possible earthquake swarm: 68 earthquakes occurred near (under) the volcano during 24 hours, the last being recorded quake 20 minutes ago. Hypocenter depths ranged between 20.50 and 0.00 km.
Earthquake details: (only 5 largest)
3.5 quake West, 72 km northeast of Reykjavik, Capital Region, Iceland, Jun 3, 2026 11:08 pm (Reykjavik time) (11 km WSW)
3.3 quake 14.6 km SSE of Húsafell Jun 3, 2026 11:08 pm (Universal Time) (10 km WSW)
2.8 quake West, 73 km northeast of Reykjavik, Capital Region, Iceland, Jun 3, 2026 10:05 am (Reykjavik time) (10 km WSW)
2.1 quake Iceland: 13.3 km SSE of Húsafell Jun 3, 2026 11:06 pm (Reykjavik time) (9 km WSW)
2.0 quake 16.1 km SSE of Húsafell Jun 3, 2026 11:06 pm (Universal Time) (11 km WSW)
All earthquakes at Prestahnukur

San Salvador volcano (El Salvador): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.00 km depth at 12 km distance W from the volcano.
Earthquake details:
2.1 quake 16 km northwest of Santa Tecla, Departamento de La Libertad, El Salvador, Jun 2, 2026 08:30 pm (GMT -6) (12 km W)
All earthquakes at San Salvador

Stepovak Bay 4 volcano (Alaska Peninsula): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.80 km depth at 7 km distance NNW from the volcano.
Earthquake details:
2.1 quake 51 mi north of Sand Point, Aleutians East Borough, Alaska, United States, Jun 2, 2026 10:27 pm (GMT -8) (7 km NNW)
All earthquakes at Stepovak Bay 4

Tecuamburro volcano (Guatemala): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.00 km depth at 17 km distance E from the volcano.
Earthquake details:
2.3 quake 12 km southeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Jun 3, 2026 12:40 am (GMT -6) (17 km E)
All earthquakes at Tecuamburro

Vesuvius volcano (Italy): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 1 hour 26 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 14 km distance NW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 5.1 km northeast of Naples, Napoli, Campania, Italy, Jun 4, 2026 12:24 am (GMT +2) (14 km NW)
All earthquakes at Vesuvius
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/304019/Volcano-earthquake-report-for-Wednesday-3-Jun-2026.html