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: Acatenango (1 quake mag 3.4), Agua (1 quake mag 1.8), Askja (1 quake mag 1.2), Balut (3 quakes between mag 1.5-2.6), Bukit Hulu Lais (1 quake mag 2.1), Campi Flegrei (Phlegrean Fields) (14 quakes between mag 0.1-2.3)
Churchill (1 quake mag 1.1), Clear Lake (16 quakes between mag 0.3-1.5), Etna (3 quakes between mag 1.3-2.0), Flores (8 quakes between mag 1.3-2.2), Fuego (1 quake mag 2.6), Kalatungan (1 quake mag 1.5), Kolumbo (2 quakes between mag 1.5-2.1), Ljósufjöll (6 quakes between mag 0.1-1.4), Loihi (1 quake mag 1.7), Loki-Fögrufjöll volcano (1 quake mag 1.0), Mammoth Mountain (2 quakes between mag 1.1-1.2), Mascota (2 quakes between mag 3.3-3.4), Mount Hood (1 quake mag 1.1), Nisyros (1 quake mag 2.1), Niua (1 quake mag 5.0), Poas (1 quake mag 1.3), Rinjani (1 quake mag 1.7), Sandal (1 quake mag 1.0), Sarik-Gajah (1 quake mag 2.6), Sousaki (2 quakes between mag 1.1-1.6), Spurr (2 quakes between mag 0.4-1.0), Tjörnes Fracture Zone (2 quakes between mag 0.9-1.2), Torfajökull (16 quakes between mag 0.3-2.2), Trident (2 quakes between mag 0.5-1.0), Vesuvius (4 quakes between mag 0.1-1.9) (updated 19h50)\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:



Acatenango volcano (Guatemala): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 24.80 km depth at 19 km distance N from the volcano.
Earthquake details:
3.4 quake 8.2 km west of Chimaltenango, Departamento de Chimaltenango, Guatemala, Oct 27, 2026 12:01 am (GMT -6) (19 km N)
All earthquakes at Acatenango
Acatenango is a 3,976 m stratovolcano near Antigua, Guatemala, and immediately north of Fuego. Its first well-documented eruptions occurred in 1924–27, and its last known eruption was in 1972.

Balut volcano (Mindanao): 3 earthquakes up to magnitude 2.6

3 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 44.00 and 27.00 km.
Earthquake details:
2.6 quake Philippine Sea, 13 km northwest of Sarangani Island, Philippines, Oct 27, 2026 07:35 am (GMT +8) (11 km N)
2.0 quake Celebes Sea, 23 km west of Sarangani Island, Philippines, Oct 27, 2026 08:54 pm (GMT +8) (12 km W)
1.5 quake Philippine Sea, 17 km northwest of Sarangani Island, Philippines, Oct 27, 2026 04:29 am (GMT +8) (15 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.

Bukit Hulu Lais volcano (Sumatra): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.00 km depth at 16 km distance NE from the volcano.
Earthquake details:
2.1 quake Kabupaten Lebong, 43 km northwest of Curup, Indonesia, Oct 27, 2026 10:27 pm (GMT +7) (16 km NE)
All earthquakes at Bukit Hulu Lais
Bukit Hulu Lais is a 2,122 m eroded volcanic complex in Indonesia. Its last known eruption belongs to a period more than approximately 11,700 years ago, while thermal activity remains evident on the complex.

Campi Flegrei (Phlegrean Fields) volcano (Italy): 14 earthquakes up to magnitude 2.3

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 1 hour 12 minutes ago. Hypocenter depths ranged between 3.62 and 0.44 km.
Earthquake details: (only 5 largest)
2.3 quake 13 km west of Naples, Napoli, Campania, Italy, Oct 27, 2026 05:30 pm (GMT +1) (2 km NW)
1.8 quake 2.3 km east of Pozzuoli, Napoli, Campania, Italy, Oct 27, 2026 05:31 pm (GMT +1) (2 km NW)
1.7 quake 2.1 km east of Pozzuoli, Napoli, Campania, Italy, Oct 27, 2026 11:40 am (GMT +1) (2 km NW)
1.2 quake 2.2 km southeast of Pozzuoli, Napoli, Campania, Italy, Oct 27, 2026 05:49 pm (GMT +1) (2 km WNW)
0.8 quake 1.9 km east of Pozzuoli, Napoli, Campania, Italy, Oct 27, 2026 07:37 pm (GMT +1) (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): 16 earthquakes up to magnitude 1.5

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 28 minutes ago. Hypocenter depths ranged between 3.49 and 0.37 km.
Earthquake details: (only 5 largest)
1.5 quake 12 mi southwest of Clearlake, Lake County, California, United States, Oct 27, 2026 05:31 am (GMT -7) (15 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 27, 2026 01:10 am (GMT -7) (18 km SSW)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 27, 2026 03:23 am (GMT -7) (17 km SSW)
0.9 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 27, 2026 06:41 am (Universal Time) (16 km SSW)
0.8 quake 29 mi north of Santa Rosa, Sonoma County, California, United States, Oct 27, 2026 09:11 am (GMT -7) (15 km SSW)
All earthquakes at Clear Lake

Flores volcano (Guatemala): 8 earthquakes up to magnitude 2.2

8 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 14.70 and 4.00 km.
Earthquake details: (only 5 largest)
2.2 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 26, 2026 09:17 pm (GMT -6) (15 km WNW)
2.0 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 26, 2026 05:59 pm (GMT -6) (15 km WNW)
1.8 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 26, 2026 10:54 pm (GMT -6) (16 km WNW)
1.5 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 26, 2026 09:19 pm (GMT -6) (15 km WNW)
1.5 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 26, 2026 09:45 pm (GMT -6) (15 km WNW)
All earthquakes at Flores
Flores, also known as Volcán Amayo, is a volcanic field about 10 km west of Jutiapa in southeastern Guatemala. Its last eruption is undated, and none are known from approximately the past 11,700 years.

Fuego volcano (Guatemala): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.90 km depth at 11 km distance SW from the volcano.
Earthquake details:
2.6 quake Departamento de Chimaltenango, 10.4 km northeast of Santa Lucia Cotzumalguapa, Guatemala, Oct 27, 2026 12:25 am (GMT -6) (11 km SW)
All earthquakes at Fuego
Fuego is a highly active Guatemalan stratovolcano near Antigua, with recorded eruptions since the 1500s. Its continuing eruption has produced frequent explosions, ashfall, lava flows, pyroclastic flows and lahars, including the deadly 3 June 2018 disaster.

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 13 hours 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

Mascota volcano (Western & Central Mexico): 2 earthquakes up to magnitude 3.4

2 earthquakes occurred near (under) the volcano during 23 minutes, the last being recorded quake 17 hours ago. Hypocenter depths ranged between 5.00 and 5.00 km.
Earthquake details:
3.4 quake 41 km east of Puerto Vallarta, Estado de Jalisco, Mexico, Oct 26, 2026 08:28 pm (GMT -6) (8 km SSW)
3.3 quake 41 km east of Puerto Vallarta, Estado de Jalisco, Mexico, Oct 26, 2026 08:51 pm (GMT -6) (10 km SSW)
All earthquakes at Mascota
Mascota is a cluster of volcanic cones and lava domes in western Mexico. Its last known activity is undated, although a lava flow at Volcán Malpaís may be only a few thousand years old.

Nisyros volcano (Greece): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 14 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.

Niua volcano (Tonga): magnitude 5.0 earthquake

A magnitude 5.0 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 16 km distance ESE from the volcano.
Earthquake details:
5.0 quake South Pacific Ocean, 231 km southwest of Apia, Tuamasaga, Samoa, Oct 27, 2026 10:07 pm (GMT +13) (16 km ESE)
All earthquakes at Niua
Niua is a large, irregular submarine volcanic complex in Tonga. Its last known eruption occurred more than approximately 11,700 years ago.

Sarik-Gajah volcano (Sumatra): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 1 hour 31 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 9 km distance SSW from the volcano.
Earthquake details:
2.6 quake Kabupaten Pasaman, 41 km northwest of Bukittinggi, Indonesia, Oct 28, 2026 01:19 am (GMT +7) (9 km SSW)
All earthquakes at Sarik-Gajah
Sarik-Gajah comprises three cones at two centers in Indonesia’s Sunda Volcanic Arc. Its last known eruption dates to between roughly 2.6 million and 11,700 years ago.

Torfajökull volcano (Iceland): 16 earthquakes up to magnitude 2.2

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 4.00 and 0.00 km.
Earthquake details: (only 5 largest)
2.2 quake 6.3 km N of Álftavatn Oct 27, 2026 03:54 am (Universal Time) (3 km SSW)
1.6 quake 9.5 km WSW of Landmannalaugar Oct 27, 2026 02:15 am (Universal Time) (4 km NW)
1.0 quake 9.3 km WSW of Landmannalaugar Oct 27, 2026 03:07 am (Universal Time) (4 km NW)
0.9 quake 5.1 km N of Álftavatn Oct 27, 2026 03:33 pm (Universal Time) (4 km SW)
0.8 quake 5.0 km SSW of Landmannalaugar Oct 27, 2026 03:03 am (Universal Time) (4 km ENE)
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