Volcano earthquake report for Saturday, 17 October 2026

Quakes detected near: Askja (3 quakes between mag 0.0-1.2), Balut (5 quakes between mag 1.4-2.1), Bardarbunga (2 quakes between mag 0.6-1.4), Baru (1 quake mag 2.9), Barva (1 quake mag 2.5), Clear Lake (10 quakes between mag 0.5-1.1)
Esjufjöll (1 quake mag 1.0), Fani Maoré (1 quake mag 2.7), Fisher (1 quake mag 1.8), Flores (11 quakes between mag 1.2-2.9), Gagak (1 quake mag 2.6), Great Sitkin (1 quake mag 1.1), Hekla (2 quakes between mag 0.2-1.6), Katla (2 quakes between mag 0.0-1.2), Kilauea (5 quakes between mag 1.7-2.4), Kukak (1 quake mag 1.2), Loki-Fögrufjöll volcano (4 quakes between mag 0.4-1.9), Mageik (1 quake mag 1.0), Maroa (1 quake mag 1.8), Matutum (1 quake mag 1.8), Maunaloa (1 quake mag 2.5), Ngauruhoe (2 quakes between mag 1.3-1.3), Orosí (1 quake mag 2.2), Paco (1 quake mag 1.5), Poas (1 quake mag 2.8), Prestahnukur (3 quakes between mag 1.3-2.0), Rinjani (1 quake mag 2.6), Ruapehu (1 quake mag 1.0), Salak (1 quake mag 2.5), San Miguel (2 quakes between mag 0.0-2.1), Santorini (1 quake mag 3.4), Stepovak Bay 4 (1 quake mag 2.4), Svartsengi (2 quakes between mag 1.2-1.2), Thordarhyrna (11 quakes between mag 0.0-1.4), Tjörnes Fracture Zone (2 quakes between mag 0.7-1.1), Vulcano (1 quake mag 1.7) (updated 12h50)\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 2.1

5 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 32.00 and 9.00 km.
Earthquake details:
2.1 quake 006 km N 63° W of Sarangani Island (Municipality of Sarangani) (Davao Occidental) Oct 17, 2026 03:36 am (GMT +8) (12 km NNE)
1.9 quake 008 km S 20° E of Balut Island (Municipality of Sarangani) (Davao Occidental) Oct 16, 2026 10:58 pm (GMT +8) (9 km SE)
1.6 quake Philippines: 001 km N 63° E of Balut Island (Municipality of Sarangani) (Davao Occidental) Oct 17, 2026 05:09 am (GMT +8) (6 km ENE)
1.5 quake Philippines: 006 km N 49° W of Balut Island (Municipality of Sarangani) (Davao Occidental) Oct 17, 2026 12:39 am (GMT +8) (6 km N)
1.4 quake Philippines: 015 km N 33° W of Balut Island (Municipality of Sarangani) (Davao Occidental) 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 20 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 Panama: 13 km Al Norte De Cerro Punta, Panamá, 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 9 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 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.

Fani Maoré volcano (Indian Ocean): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 13 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 Near Mamoudzou 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): 11 earthquakes up to magnitude 2.9

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 11.00 and 0.90 km.
Earthquake details: (only 5 largest)
2.9 quake Guatemala Oct 17, 2026 01:31 am (GMT -6) (14 km NW)
2.2 quake 23 km Al Noreste De Cuilapa, Guatemala, Oct 17, 2026 03:38 am (GMT -6) (16 km WNW)
2.0 quake Guatemala Oct 16, 2026 11:18 am (GMT -6) (15 km WNW)
1.9 quake Guatemala Oct 16, 2026 08:43 am (GMT -6) (15 km WNW)
1.8 quake Guatemala Oct 16, 2026 02:40 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.

Gagak volcano (West Java): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 22 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 Java, Indonesia, Oct 16, 2026 09:36 pm (GMT +7) (7 km W)
All earthquakes at Gagak

Kilauea volcano (Hawai'i (Big Island)): 5 earthquakes up to magnitude 2.4

5 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 41.03 and 0.34 km.
Earthquake details:
2.4 quake 12 km NE of Pāhala, Hawaii, Oct 17, 2026 12:06 am (GMT -10) (19 km SW)
2.3 quake 13 km NE of Pāhala, Hawaii, Oct 16, 2026 11:41 pm (GMT -10) (18 km SW)
1.8 quake 14 km S of Volcano, Hawaii, Oct 16, 2026 12:17 pm (GMT -10) (14 km SSE)
1.7 quake 7 km S of Volcano, Hawaii, Oct 16, 2026 09:15 pm (GMT -10) (7 km SE)
1.7 quake 13 km SSW of Volcano, Hawaii, Oct 16, 2026 01:40 pm (GMT -10) (11 km SSE)
All earthquakes at Kilauea

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.57 km depth at 15 km distance SE from the volcano.
Earthquake details:
2.5 quake 19 km N of Pāhala, Hawaii, Oct 16, 2026 02:02 pm (GMT -10) (15 km SE)
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.

Orosí volcano (Costa Rica): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 1 hour 19 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 19.00 km depth at 17 km distance NW from the volcano.
Earthquake details:
2.2 quake Costa Rica: 1.7 km Al Noreste De La Garita De Guanacaste Oct 17, 2026 05:31 am (Costa_Rica time) (17 km NW)
All earthquakes at Orosí
Orosí belongs to an eroded, forested volcanic complex in northwestern Costa Rica. Its last activity is uncertain: mudflows occurred about 3,500 years ago, while reported eruptions in 1844 and 1849 may have come from neighboring Rincón de la Vieja.

Poas volcano (Costa Rica): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 7 hours 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 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 22 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 Sumbawa Region, 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 22 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 Java, 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 Al Suroeste De San Miguel, El Salvador, Oct 16, 2026 07:04 pm (GMT -6) (3 km SSW)
0.0 quake 0 Al S Roeste 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 23 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 Greece: 14.8 km WSW of Thira Oct 16, 2026 04:32 pm (GMT +3) (11 km WSW)
All earthquakes at Santorini

Stepovak Bay 4 volcano (Alaska Peninsula): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 16 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 8.50 km depth at 4 km distance ESE from the volcano.
Earthquake details:
2.4 quake 26 km W of Ivanof Bay, Alaska, Oct 17, 2026 04:34 am (GMT -8) (4 km ESE)
All earthquakes at Stepovak Bay 4

Thordarhyrna volcano (Iceland): 11 earthquakes up to magnitude 1.4

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 8.60 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