Volcano earthquake report for Saturday, 3 October 2026
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 3 Oct 2026 Number in brackets indicate nr of quakes.

Quakes detected near: Alaska Peninsula Arc at 155.4°W (1 quake mag 1.4), Apoyeque (2 quakes between mag 2.0-2.4), Askja (3 quakes between mag 0.0-1.7), Balut (6 quakes between mag 1.7-2.4), Cabalian (1 quake mag 2.5), Campi Flegrei (Phlegrean Fields) (15 quakes between mag 0.1-1.7)
Clear Lake (32 quakes between mag 0.2-2.2), Cuernos de Negros (1 quake mag 1.7), Cuilapa-Barbarena (2 quakes between mag 1.3-1.3), Esjufjöll (1 quake mag 1.5), Fani Maoré (2 quakes between mag 2.0-3.1), Flores (6 quakes between mag 1.0-2.0), Grímsvötn (2 quakes between mag 1.6-4.5), Hekla (2 quakes between mag 1.4-1.6), Hrómundartindur (4 quakes between mag 0.1-1.2), Katla (4 quakes between mag 0.8-1.1), Kilauea (7 quakes between mag 1.8-2.1), Kolbeinsey Ridge (7 quakes between mag 0.0-2.0), Koruhüyüğü (1 quake mag 1.1), Krísuvík (5 quakes between mag 0.4-1.2), Mauna Kea (1 quake mag 2.2), Parker (1 quake mag 1.6), Reporoa (1 quake mag 1.4), Salton Buttes (1 quake mag 1.1), Spurr (3 quakes between mag 0.6-1.0), Theistareykjarbunga (1 quake mag 2.2) (updated 18h50)\n\nNote: 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.\n
Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:



Apoyeque volcano (Nicaragua): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 2 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 10.00 and 7.00 km.
Earthquake details:
2.4 quake 18 km northwest of Managua, Departamento de Managua, Nicaragua, Oct 3, 2026 02:14 am (GMT -6) (7 km WSW)
2.0 quake 18 km northwest of Managua, Departamento de Managua, Nicaragua, Oct 3, 2026 04:36 am (GMT -6) (7 km WSW)
All earthquakes at Apoyeque
Apoyeque is a lake-filled volcanic complex on Nicaragua’s Chiltepe Peninsula, near Managua. Geological deposits record four eruptions between about 4160 BCE and 50 BCE, but none has been documented in written history.

Balut volcano (Mindanao): 6 earthquakes up to magnitude 2.4

6 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 1 hour 49 minutes ago. Hypocenter depths ranged between 43.00 and 28.00 km.
Earthquake details: (only 5 largest)
2.4 quake Celebes Sea, 27 km west of Sarangani Island, Philippines, Oct 3, 2026 01:11 pm (GMT +8) (15 km WSW)
1.8 quake Philippine Sea, 12 km northwest of Sarangani Island, Philippines, Oct 4, 2026 01:01 am (GMT +8) (11 km N)
1.8 quake Province of Davao del Sur, 1.9 km northeast of Sarangani, Philippines, Oct 3, 2026 04:43 pm (GMT +8) (12 km E)
1.7 quake Province of Davao del Sur, 9.6 km west of Sarangani, Philippines, Oct 3, 2026 11:02 pm (GMT +8) (2 km SSE)
1.7 quake Philippine Sea, 13 km west of Sarangani Island, Philippines, Oct 3, 2026 10:01 pm (GMT +8) (6 km NNW)
All earthquakes at Balut
Balut is an 840 m island stratovolcano south of Mindanao whose last known eruption occurred between about 2 million and 11,700 years ago. Hot springs and thermally altered ground occur on its western and southwestern flanks.

Cabalian volcano (Central Philippines): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.00 km depth at 9 km distance WSW from the volcano.
Earthquake details:
2.5 quake 36 km northeast of Maasin, Philippines, Oct 3, 2026 05:53 am (GMT +8) (9 km WSW)
All earthquakes at Cabalian
Cabalían is a 912 m-high stratovolcano on southeastern Leyte, distinguished by its lake-filled summit crater. Radiocarbon evidence records an eruption around 1820, with an uncertainty of about 30 years.

Campi Flegrei (Phlegrean Fields) volcano (Italy): 15 earthquakes up to magnitude 1.7

Possible earthquake swarm: 15 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 7.08 and 0.96 km.
Earthquake details: (only 5 largest)
1.7 quake 3.9 km west of Fuorigrotta, Napoli, Campania, Italy, Oct 3, 2026 08:05 am (GMT +2) (1 km E)
1.0 quake 1.9 km east of Pozzuoli, Napoli, Campania, Italy, Oct 3, 2026 10:07 am (GMT +2) (2 km NW)
1.0 quake 3.5 km southeast of Pozzuoli, Napoli, Campania, Italy, Oct 3, 2026 05:37 am (GMT +2) (1 km NW)
0.8 quake 2.5 km east of Pozzuoli, Napoli, Campania, Italy, Oct 3, 2026 05:04 am (GMT +2) (2 km NW)
0.7 quake 12 km west of Naples, Napoli, Campania, Italy, Oct 3, 2026 09:53 am (GMT +2) (2 km NW)
All earthquakes at Campi Flegrei (Phlegrean Fields)
Campi Flegrei is a 13-km-wide volcanic caldera encompassing part of Naples and the Gulf of Pozzuoli. Its last known eruption formed the Monte Nuovo cone in 1538.

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 1 hour 25 minutes ago. Hypocenter depths ranged between 8.19 and 0.72 km.
Earthquake details: (only 5 largest)
2.2 quake Mendocino County, 14 mi southwest of Clearlake, Lake County, California, United States, Oct 3, 2026 03:00 am (GMT -7) (14 km SSW)
2.0 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Oct 3, 2026 06:09 am (GMT -7) (17 km SSW)
2.0 quake Mendocino County, 14 mi southwest of Clearlake, Lake County, California, United States, Oct 3, 2026 03:00 am (GMT -7) (14 km SSW)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 3, 2026 07:51 am (GMT -7) (17 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 3, 2026 10:36 am (Universal Time) (18 km SSW)
All earthquakes at Clear Lake

Fani Maoré volcano (Indian Ocean): 2 earthquakes up to magnitude 3.1

2 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 41.70 and 37.96 km.
Earthquake details:
3.1 quake 45 km east of Mamoudzou, Mamoudzou, Mayotte, Oct 2, 2026 10:10 pm (GMT +3) (14 km NNW)
2.0 quake 48 km east of Dzaoudzi, Dzaoudzi, Mayotte, Oct 3, 2026 05:41 am (GMT +3) (5 km WSW)
All earthquakes at Fani Maoré
Fani Maoré is a submarine volcano about 50 km east of Mayotte. Seismic unrest began in May 2018, and surveys in 2019 discovered a new 800-m-high cone and extensive lava flows on the seafloor.

Grímsvötn volcano (Iceland): 2 earthquakes up to magnitude 4.5

2 earthquakes occurred near (under) the volcano at nearly the same time (11:54 UTC). Hypocenter depths ranged between 5.20 and 1.80 km.
Earthquake details:
4.5 quake Iceland: 11.7 km E of Grímsfjall Oct 3, 2026 11:53 am (Reykjavik time) (15 km E)
1.6 quake 17.3 km NNE of Grímsfjall Oct 3, 2026 11:54 am (Universal Time) (17 km NNE)
All earthquakes at Grímsvötn

Kilauea volcano (Hawai'i (Big Island)): 7 earthquakes up to magnitude 2.1

7 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 0.83 and 0.09 km.
Earthquake details: (only 5 largest)
2.1 quake 26 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 3, 2026 12:09 am (GMT -10) (2 km SSW)
2.0 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 3, 2026 05:48 am (GMT -10) (1 km ESE)
2.0 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 2, 2026 06:01 pm (GMT -10) (1 km SE)
2.0 quake 3.7 mi southwest of Volcano, Hawaii County, Hawaii, United States, Oct 2, 2026 10:23 am (GMT -10) (1 km SE)
1.9 quake 26 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 3, 2026 01:02 am (GMT -10) (2 km SSW)
All earthquakes at Kilauea

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

A magnitude 2.2 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 13.77 km depth at 12 km distance WSW from the volcano.
Earthquake details:
2.2 quake 19 mi south of Waimea, Hawaii County, Hawaii, United States, Oct 2, 2026 06:58 pm (GMT -10) (12 km WSW)
All earthquakes at Mauna Kea
Mauna Kea is Hawaiʻi’s highest volcano and last erupted about 4,500 years ago, producing cinder cones and lava flows. Numerous cones and astronomical observatories occupy its summit region.

Theistareykjarbunga volcano (Iceland): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.40 km depth at 8 km distance W from the volcano.
Earthquake details:
2.2 quake 2.5 km W of Þeistareykir Oct 3, 2026 04:26 am (Universal Time) (8 km W)
All earthquakes at Theistareykjarbunga
Theistareykjarbunga is a 563 m-high basaltic shield volcano in northern Iceland. Three eruption periods are dated to approximately 9500 BCE, 6800 BCE and 900 BCE, with uncertainty attached to the two older dates.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/370269/Volcano-earthquake-report-2026-10-03.html