Volcano earthquake report for Saturday, 17 October 2026

Quakes detected near: Agua (1 quake mag 2.5), Askja (2 quakes between mag 0.0-1.3), Balut (5 quakes between mag 1.4-2.1), Bardarbunga (5 quakes between mag 0.2-1.4), Baru (1 quake mag 2.9), Barva (1 quake mag 2.5)
Clear Lake (13 quakes between mag 0.2-1.5), Fani Maoré (1 quake mag 2.7), Fisher (1 quake mag 1.8), Flores (17 quakes between mag 1.2-2.4), Gagak (1 quake mag 2.6), Gran Canaria (1 quake mag 1.9), Great Sitkin (1 quake mag 1.1), Hekla (2 quakes between mag 0.2-1.6), Katla (3 quakes between mag 0.0-1.9), Kilauea (4 quakes between mag 1.5-1.8), Kukak (1 quake mag 1.2), Maroa (1 quake mag 1.8), Matutum (1 quake mag 1.8), Maunaloa (2 quakes between mag 2.2-2.5), Ngauruhoe (2 quakes between mag 1.3-1.3), Pelée (1 quake mag 1.0), Poas (1 quake mag 2.8), Prestahnukur (4 quakes between mag 0.7-2.0), Reporoa (1 quake mag 1.7), Rinjani (1 quake mag 2.6), Salak (1 quake mag 2.5), San Miguel (2 quakes between mag 0.0-2.1), Santa Clara (1 quake mag 1.5), Santorini (1 quake mag 3.4), Svartsengi (4 quakes between mag 0.2-1.7), Thordarhyrna (12 quakes between mag 0.0-1.4) (updated 06h50)\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:

Agua volcano (Guatemala): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.80 km depth at 15 km distance NE from the volcano.
Earthquake details:
2.5 quake Departamento de Sacatepequez, 17 km southwest of Guatemala City, Guatemala, Oct 16, 2026 05:32 am (GMT -6) (15 km NE)
All earthquakes at Agua
Agua is a prominent 3,760 m stratovolcano beside Antigua, Guatemala. It has no recorded eruptions, while a devastating mudflow destroyed Ciudad Vieja in 1541.

Balut volcano (Mindanao): 5 earthquakes up to magnitude 2.1

5 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 32.00 and 9.00 km.
Earthquake details:
2.1 quake Philippine Sea, 8.9 km northwest of Sarangani Island, Philippines, Oct 17, 2026 03:36 am (GMT +8) (12 km NNE)
1.9 quake Philippine Sea, 11 km south of Sarangani Island, Philippines, Oct 16, 2026 10:58 pm (GMT +8) (9 km SE)
1.6 quake Province of Davao del Sur, 4.2 km northwest of Sarangani, Philippines, Oct 17, 2026 05:09 am (GMT +8) (6 km ENE)
1.5 quake Philippine Sea, 10.7 km west of Sarangani Island, Philippines, Oct 17, 2026 12:39 am (GMT +8) (6 km N)
1.4 quake Philippine Sea, 16 km northwest of Sarangani Island, Philippines, Oct 16, 2026 11:48 pm (GMT +8) (14 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.

Baru volcano (Panama): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.00 km depth at 10 km distance ENE from the volcano.
Earthquake details:
2.9 quake 45 km north of David, Provincia de Chiriqui, Panama, Oct 16, 2026 11:51 am (GMT -5) (10 km ENE)
All earthquakes at Baru

Barva volcano (Costa Rica): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.00 km depth at 3 km distance WNW from the volcano.
Earthquake details:
2.5 quake Provincia de Heredia, 24 km north of San Jose, Provincia de San Jose, Costa Rica, Oct 16, 2026 09:47 pm (GMT -6) (3 km WNW)
All earthquakes at Barva
Barva is a multi-peaked Costa Rican volcano near San José, also recorded as Barba and Las Tres Marías. Its only confirmed eruption dates to around 6050 BCE, while later historical reports are uncertain.

Clear Lake volcano (California): 13 earthquakes up to magnitude 1.5

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 14 minutes ago. Hypocenter depths ranged between 3.15 and 0.81 km.
Earthquake details: (only 5 largest)
1.5 quake Sonoma County, 13 mi southwest of Clearlake, Lake County, California, United States, Oct 16, 2026 12:55 am (GMT -7) (17 km S)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 16, 2026 06:07 pm (GMT -7) (16 km SSW)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 16, 2026 09:34 am (GMT -7) (16 km SSW)
1.1 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Oct 16, 2026 05:09 am (GMT -7) (19 km S)
1.0 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 16, 2026 06:38 pm (GMT -7) (16 km SSW)
All earthquakes at Clear Lake

Fani Maoré volcano (Indian Ocean): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 38.82 km depth at 12 km distance NW from the volcano.
Earthquake details:
2.7 quake 45 km east of Mamoudzou, Mamoudzou, Mayotte, Oct 17, 2026 03:18 am (GMT +3) (12 km NW)
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.

Flores volcano (Guatemala): 17 earthquakes up to magnitude 2.4

Possible earthquake swarm: 17 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 6.30 and 0.90 km.
Earthquake details: (only 5 largest)
2.4 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 16, 2026 05:42 am (GMT -6) (14 km WNW)
2.4 quake 24 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 16, 2026 04:25 am (GMT -6) (13 km WNW)
2.2 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 16, 2026 04:39 am (GMT -6) (14 km WNW)
2.1 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 16, 2026 04:20 am (GMT -6) (14 km WNW)
2.0 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 16, 2026 11:18 am (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.

Gagak volcano (West Java): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.00 km depth at 7 km distance W from the volcano.
Earthquake details:
2.6 quake 23 km southwest of Ciampea, Bogor Regency, Jawa Barat, Indonesia, Oct 16, 2026 09:36 pm (GMT +7) (7 km W)
All earthquakes at Gagak

Maunaloa volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.5

2 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 38.76 and 5.57 km.
Earthquake details:
2.5 quake 36 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 16, 2026 02:02 pm (GMT -10) (15 km SE)
2.2 quake 24 mi southeast of Holualoa, Hawaii County, Hawaii, United States, Oct 15, 2026 08:51 pm (GMT -10) (7 km SW)
All earthquakes at Maunaloa
Maunaloa is a huge, frequently active shield volcano on Hawaiʻi’s Big Island. Its predominantly lava-producing eruptions include a well-documented episode in November–December 2022.

Poas volcano (Costa Rica): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 54 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 12.00 km depth at 15 km distance SW from the volcano.
Earthquake details:
2.8 quake Provincia de Alajuela, 34 km northwest of San Jose, Costa Rica, Oct 16, 2026 11:55 pm (GMT -6) (15 km SW)
All earthquakes at Poas
Poás is an active Costa Rican volcano about 35 km northwest of San José. Its highly acidic Laguna Caliente is the source of frequent steam-driven explosions, including activity recorded during 2025 and 2026.

Rinjani volcano (Lombok): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 13.00 km depth at 11 km distance NNW from the volcano.
Earthquake details:
2.6 quake Kabupaten Lombok Utara, 45 km northeast of Mataram, Indonesia, Oct 16, 2026 10:32 pm (GMT +8) (11 km NNW)
All earthquakes at Rinjani
Rinjani is a 3,726-m stratovolcano on Lombok whose large caldera formed during the enormous 1257 eruption of Samalas. Recorded activity since the mid-19th century has occurred at Barujari cone within the caldera.

Salak volcano (West Java): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 9 km distance NE from the volcano.
Earthquake details:
2.5 quake 6.3 km south of Bogor, Kota Bogor, Jawa Barat, Indonesia, Oct 16, 2026 09:22 pm (GMT +7) (9 km NE)
All earthquakes at Salak
Salak is a stratovolcano in West Java with five confirmed VEI 2 eruptive periods between 1780 and 1938. Six teenagers died in 2007 after suspected sulfur-gas exposure at a crater, although the volcano remained in repose.

San Miguel volcano (El Salvador): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano at nearly the same time (01:04 UTC). Hypocenter depths ranged between 29.00 and 29.00 km.
Earthquake details:
2.1 quake 14 km southwest of San Miguel, Departamento de San Miguel, El Salvador, Oct 16, 2026 07:04 pm (GMT -6) (3 km SSW)
0.0 quake 14 km southwest of San Miguel, Departamento de San Miguel, El Salvador, 2026-10-16 19:04:09 (3 km SSW)
All earthquakes at San Miguel
San Miguel, or Chaparrastique, is one of El Salvador’s most active volcanoes, with recorded eruptions dating to the early 16th century. Its December 2013 eruption produced an ash plume reaching 9.7 km altitude, while activity through May 2023 included smaller gas-and-ash explosions.

Santorini volcano (Greece): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 11 km distance WSW from the volcano.
Earthquake details:
3.4 quake Aegean Sea, 16 km west of Santorini Island, Nomos Kykladon, South Aegean, Greece, Oct 16, 2026 04:32 pm (GMT +3) (11 km WSW)
All earthquakes at Santorini

Thordarhyrna volcano (Iceland): 12 earthquakes up to magnitude 1.4

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 58 minutes ago. Hypocenter depths ranged between 18.70 and 0.00 km.
Earthquake details: (only 5 largest)
1.4 quake 19.3 km SW of Grímsfjall Oct 16, 2026 03:25 pm (Universal Time) (3 km ENE)
1.4 quake 12.2 km SW of Grímsfjall Oct 16, 2026 03:28 pm (Universal Time) (10 km NE)
1.3 quake Iceland: 20.2 km SW of Grímsfjall Oct 16, 2026 03:31 pm (Reykjavik time) (3 km E)
1.0 quake Iceland: 11.9 km SW of Grímsfjall Oct 16, 2026 09:14 pm (Reykjavik time) (11 km NE)
0.8 quake Iceland: 12.1 km WSW of Grímsfjall Oct 16, 2026 10:07 pm (Reykjavik time) (11 km NE)
All earthquakes at Thordarhyrna
Thordarhyrna is an ice-covered stratovolcano in southern Iceland and part of the Grímsvötn-Laki volcanic system. Three confirmed eruptive periods are recorded from 1823 to 1904, including a VEI 4 eruption in 1902-1904.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/380221/Volcano-earthquake-report-2026-10-17.html