Volcano earthquake report for Tuesday, 27 October 2026
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 27 Oct 2026 Number in brackets indicate nr of quakes.

Quakes detected near: Agua (3 quakes between mag 1.1-1.3), Balut (5 quakes between mag 1.3-2.6), Campi Flegrei (Phlegrean Fields) (9 quakes between mag 0.1-2.3), Clear Lake (21 quakes between mag 0.3-1.3), Coso (1 quake mag 1.0), Eldey (2 quakes between mag 1.1-1.4)
Etna (2 quakes between mag 1.3-2.0), Kolumbo (2 quakes between mag 1.5-2.1), Koruhüyüğü (1 quake mag 1.9), Ljósufjöll (6 quakes between mag 0.2-1.6), Malindang (1 quake mag 1.5), Mammoth Mountain (2 quakes between mag 1.1-1.2), Mayotte Island (1 quake mag 2.0), Nisyros (1 quake mag 2.1), Sousaki (2 quakes between mag 1.1-1.6), Spurr (1 quake mag 1.0), Torfajökull (12 quakes between mag 0.3-2.3), Trident (2 quakes between mag 0.5-1.0), Vesuvius (2 quakes between mag 0.1-2.0) (updated 07h50)\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:



Balut volcano (Mindanao): 5 earthquakes up to magnitude 2.6

5 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 38.00 and 15.00 km.
Earthquake details:
2.6 quake Philippine Sea, 13 km northwest of Sarangani Island, Philippines, Oct 27, 2026 07:35 am (GMT +8) (10 km N)
2.2 quake Philippine Sea, 17 km west of Sarangani Island, Philippines, Oct 27, 2026 12:00 am (GMT +8) (11 km NNW)
1.8 quake Philippine Sea, 14 km northwest of Sarangani Island, Philippines, Oct 26, 2026 04:42 pm (GMT +8) (17 km NNE)
1.5 quake Philippine Sea, 3 km southwest of Sarangani Island, Philippines, Oct 26, 2026 07:43 pm (GMT +8) (10 km ENE)
1.3 quake Philippine Sea, 15 km northwest of Sarangani Island, Philippines, Oct 27, 2026 04:29 am (GMT +8) (13 km N)
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.

Campi Flegrei (Phlegrean Fields) volcano (Italy): 9 earthquakes up to magnitude 2.3

9 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 2.69 and 1.00 km.
Earthquake details: (only 5 largest)
2.3 quake 12 km west of Naples, Napoli, Campania, Italy, Oct 26, 2026 11:44 am (GMT +1) (1 km SW)
1.2 quake 4 km southeast of Pozzuoli, Napoli, Campania, Italy, Oct 26, 2026 11:07 am (GMT +1) (0 km NNW)
1.1 quake 12 km west of Naples, Napoli, Campania, Italy, Oct 26, 2026 11:39 am (GMT +1) (1 km SW)
0.9 quake 12 km west of Naples, Napoli, Campania, Italy, Oct 26, 2026 11:42 am (GMT +1) (1 km SW)
0.6 quake 4 km southeast of Pozzuoli, Napoli, Campania, Italy, Oct 26, 2026 11:39 am (GMT +1) (0 km SW)
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): 21 earthquakes up to magnitude 1.3

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 24 hours, the last being recorded quake 12 minutes ago. Hypocenter depths ranged between 3.42 and 0.37 km.
Earthquake details: (only 5 largest)
1.3 quake Lake County, 26 mi north of Santa Rosa, Sonoma County, California, United States, Oct 26, 2026 10:44 am (GMT -7) (17 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 26, 2026 07:42 am (GMT -7) (16 km S)
1.3 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Oct 26, 2026 01:43 am (GMT -7) (18 km S)
1.0 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Oct 26, 2026 11:14 am (GMT -7) (19 km S)
1.0 quake Lake County, 26 mi north of Santa Rosa, Sonoma County, California, United States, Oct 26, 2026 10:16 am (GMT -7) (17 km S)
All earthquakes at Clear Lake

Kolumbo volcano (Greece): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 45 minutes ago. Hypocenter depths ranged between 15.30 and 13.70 km.
Earthquake details:
2.1 quake Aegean Sea, 27 km southeast of Nisi Irakleia Island, Greece, Oct 27, 2026 09:05 am (GMT +2) (19 km NE)
1.5 quake Aegean Sea, 27 km northeast of Santorini Island, Greece, Oct 27, 2026 02:10 am (GMT +2) (15 km NE)
All earthquakes at Kolumbo

Nisyros volcano (Greece): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 16.80 km depth at 16 km distance S from the volcano.
Earthquake details:
2.1 quake Aegean Sea, 16 km south of Nisi Nisyros Island, Dodecanese, South Aegean, Greece, Oct 27, 2026 07:40 am (GMT +2) (16 km S)
All earthquakes at Nisyros
Nisyros is a volcanic island in Greece with a 3–4 km caldera, lava domes and vigorous hydrothermal activity. Four confirmed eruptive periods occurred from 1422 to 1888, followed by documented unrest that prompted a crater closure in January 2003.

Torfajökull volcano (Iceland): 12 earthquakes up to magnitude 2.3

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 4.00 and 0.00 km.
Earthquake details: (only 5 largest)
2.3 quake Iceland: 6.0 km N of Álftavatn Oct 27, 2026 03:54 am (Reykjavik time) (3 km SW)
1.6 quake 9.5 km WSW of Landmannalaugar Oct 27, 2026 02:15 am (Universal Time) (4 km NW)
1.1 quake Iceland: 9.3 km WSW of Landmannalaugar Oct 27, 2026 03:07 am (Reykjavik time) (5 km NW)
0.8 quake 5.0 km SSW of Landmannalaugar Oct 27, 2026 03:03 am (Universal Time) (4 km ENE)
0.8 quake 9.6 km N of Álftavatn Oct 27, 2026 02:14 am (Universal Time) (3 km WNW)
All earthquakes at Torfajökull
Torfajökull contains Iceland’s largest exposed area of silicic and intermediate volcanism. Ten recorded eruptive periods span about 8,000 years, with the last known eruption in 1477.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/390017/Volcano-earthquake-report-2026-10-27.html