Volcano earthquake report for Wednesday, 30 September 2026

Quakes detected near: Balut (5 quakes between mag 2.0-3.4), Bardarbunga (7 quakes between mag 0.8-2.1), Clear Lake (31 quakes between mag 0.4-1.3), Coso (1 quake mag 1.2), Eldey (3 quakes between mag 1.7-2.6), Etna (1 quake mag 1.1)
Fani Maoré (1 quake mag 2.5), Flores (12 quakes between mag 1.4-3.2), Hrómundartindur (4 quakes between mag 0.1-1.6), Karadağ (1 quake mag 1.4), Kasatochi (1 quake mag 1.3), Katmai (4 quakes between mag 0.7-1.3), Kilauea (2 quakes between mag 1.7-1.8), Kolbeinsey Ridge (6 quakes between mag 1.5-3.6), La Palma (2 quakes between mag 1.0-1.2), Laacher See (2 quakes between mag 0.8-1.6), Ljósufjöll (1 quake mag 1.3), Maunaloa (2 quakes between mag 1.9-2.6), Mount St. Helens (1 quake mag 1.6), Nevados Casiri (1 quake mag 3.4), Paluweh (2 quakes between mag 2.9-3.2), Sandal (1 quake mag 1.1), Stepovak Bay 2 (1 quake mag 2.2), Suwanosejima (1 quake mag 2.7), Tjörnes Fracture Zone (9 quakes between mag 0.8-1.5), Turrialba (1 quake mag 1.0), White Island (6 quakes between mag 2.3-2.9) (updated 11h50)\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 3.4

5 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 34.00 and 5.00 km.
Earthquake details:
3.4 quake Mindanao, Philippines, Sep 30, 2026 12:06 am (GMT +8) (7 km NNW)
3.2 quake Mindanao, Philippines, Sep 30, 2026 11:53 am (GMT +8) (17 km NNW)
3.1 quake Mindanao, Philippines, Sep 30, 2026 06:56 am (GMT +8) (18 km WSW)
2.6 quake Philippines: 011 km N 78° W of Balut Island (Municipality of Sarangani) (Davao Occidental) Sep 30, 2026 05:00 pm (GMT +8) (6 km NW)
2.0 quake 023 km S 43° W of Balut Island (Municipality of Sarangani) (Davao Occidental) Sep 30, 2026 01:32 am (GMT +8) (19 km SW)
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.

Bardarbunga volcano (Iceland): 7 earthquakes up to magnitude 2.1

7 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 17.00 and 0.00 km.
Earthquake details: (only 5 largest)
2.1 quake Iceland: 4.1 km ESE of Bárðarbunga Sep 29, 2026 07:58 pm (Reykjavik time) (4 km E)
1.8 quake Iceland: 4.5 km SSE of Bárðarbunga Sep 29, 2026 05:34 pm (Reykjavik time) (3 km SSE)
1.5 quake Iceland: 5.6 km ESE of Bárðarbunga Sep 29, 2026 09:52 pm (Reykjavik time) (5 km ESE)
1.4 quake Iceland: 2.1 km S of Bárðarbunga Sep 29, 2026 08:27 pm (Reykjavik time) (1 km S)
1.0 quake 18.2 km ESE of Bárðarbunga Sep 30, 2026 05:04 am (Universal Time) (18 km ESE)
All earthquakes at Bardarbunga
Bárðarbunga is an ice-covered Icelandic stratovolcano whose far-reaching fissure system has produced enormous lava flows and major explosive eruptions. Its 2014-15 Holuhraun eruption created a lava field of almost 85 km².

Clear Lake volcano (California): 31 earthquakes up to magnitude 1.3

Possible earthquake swarm: 31 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 59 minutes ago. Hypocenter depths ranged between 11.66 and 0.00 km.
Earthquake details: (only 5 largest)
1.3 quake 8 km W of Cobb, CA, Sep 29, 2026 11:18 pm (GMT -7) (15 km SSW)
1.3 quake 5 km W of Cobb, CA, Sep 29, 2026 08:22 pm (GMT -7) (16 km S)
1.3 quake 3 km NNW of the Geysers, CA, Sep 29, 2026 05:54 pm (GMT -7) (19 km S)
1.3 quake 5 km NW of the Geysers, CA, Sep 29, 2026 10:45 am (GMT -7) (18 km S)
1.2 quake 6 km WNW of Cobb, CA, Sep 29, 2026 02:32 pm (GMT -7) (15 km S)
All earthquakes at Clear Lake

Eldey volcano (Iceland): 3 earthquakes up to magnitude 2.6

3 earthquakes occurred near (under) the volcano during 10 minutes, the last being recorded quake 44 minutes ago. Hypocenter depths ranged between 9.00 and 6.00 km.
Earthquake details:
2.6 quake Iceland: 5.0 km NW of Geirfuglasker Sep 30, 2026 10:55 am (Reykjavik time) (14 km W)
2.0 quake Iceland: 5.5 km NNW of Geirfugladrangur Sep 30, 2026 11:06 am (Reykjavik time) (16 km W)
1.7 quake Iceland: 6.0 km NW of Geirfuglasker Sep 30, 2026 11:05 am (Reykjavik time) (14 km W)
All earthquakes at Eldey
Eldey is a mostly submarine volcanic system south of Iceland, with only an island and several rocky skerries above water. Five eruptions are confirmed from 1211 to 1926, and an additional event in 1884 is uncertain.

Fani Maoré volcano (Indian Ocean): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 40.71 km depth at 12 km distance NW from the volcano.
Earthquake details:
2.5 quake Event of Magnitude 2.5, Near Mamoudzou, Sep 30, 2026 10:09 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): 12 earthquakes up to magnitude 3.2

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 17.20 and 5.00 km.
Earthquake details: (only 5 largest)
3.2 quake Guatemala Sep 29, 2026 02:33 pm (GMT -6) (14 km WNW)
2.7 quake Guatemala Sep 29, 2026 12:56 pm (GMT -6) (14 km WNW)
2.5 quake Guatemala Sep 29, 2026 06:56 am (GMT -6) (14 km WNW)
2.1 quake Guatemala Sep 29, 2026 08:34 am (GMT -6) (14 km WNW)
2.0 quake Guatemala Sep 29, 2026 03:55 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.

Kolbeinsey Ridge volcano (Iceland): 6 earthquakes up to magnitude 3.6

6 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 11.00 and 7.00 km.
Earthquake details: (only 5 largest)
3.6 quake Iceland Region Sep 30, 2026 01:26 am (Universal Time) (10 km WNW)
2.6 quake 35.6 km WNW of Grímsey Sep 30, 2026 08:41 am (Universal Time) (10 km WNW)
2.2 quake 35.0 km WNW of Grímsey Sep 30, 2026 04:39 am (Universal Time) (9 km WNW)
2.2 quake 34.7 km WNW of Grímsey Sep 30, 2026 01:55 am (Universal Time) (10 km W)
1.8 quake 32.6 km WNW of Grímsey Sep 30, 2026 02:34 am (Universal Time) (8 km W)
All earthquakes at Kolbeinsey Ridge
Kolbeinsey Ridge is a submarine fissure-vent system north of Iceland, with tiny Kolbeinsey Island as its only expression above sea level. Historical eruption reports from 1372 and 1755 have uncertain locations.

Maunaloa volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.6

2 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 6.18 and 1.06 km.
Earthquake details:
2.6 quake 25 km ESE of Honaunau-Napoopoo, Hawaii, Sep 29, 2026 10:59 pm (GMT -10) (7 km SSW)
1.9 quake 19 km N of Pāhala, Hawaii, Sep 29, 2026 01:48 pm (GMT -10) (17 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.

Nevados Casiri volcano (Peru): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.00 km depth at 6 km distance SW from the volcano.
Earthquake details:
3.4 quake Southern Peru Sep 29, 2026 08:52 pm (GMT -5) (6 km SW)
All earthquakes at Nevados Casiri
Nevados Casiri is a four-edifice stratovolcano in southern Peru, with a summit crater, an older lava dome and two younger lava flows. Its last eruption is undated, and no eruption is known during approximately the past 11,700 years.

Paluweh volcano (Lesser Sunda Islands): 2 earthquakes up to magnitude 3.2

2 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 17.00 and 14.00 km.
Earthquake details:
3.2 quake Flores Region, Indonesia, Sep 29, 2026 09:38 pm (GMT +8) (19 km NNW)
2.9 quake Flores Region, Indonesia, Sep 30, 2026 04:59 pm (GMT +8) (13 km WSW)
All earthquakes at Paluweh
Paluweh is an island-forming stratovolcano north of Flores, Indonesia. Its major eruptions include a destructive, tsunami-producing event in 1928 and deadly pyroclastic flows in 2013.

Stepovak Bay 2 volcano (Alaska Peninsula): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.00 km depth at 15 km distance SSE from the volcano.
Earthquake details:
2.2 quake 31 km WSW of Ivanof Bay, Alaska, Sep 29, 2026 02:59 pm (GMT -8) (15 km SSE)
All earthquakes at Stepovak Bay 2
Stepovak Bay 2 is part of a four-cone volcanic field on the Alaska Peninsula. Its andesitic lava flow formed sometime within approximately the past 11,700 years, but no dated eruption has been identified.

Suwanosejima volcano (Ryukyu Islands): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 11 km distance NE from the volcano.
Earthquake details:
2.7 quake Ryukyu Islands, Japan, Sep 30, 2026 06:46 pm (GMT +9) (11 km NE)
All earthquakes at Suwanosejima
Suwanosejima is one of Japan’s most frequently active volcanoes, with recurring explosions, ash plumes and incandescent ejecta. Its largest recorded eruption occurred in 1813-14, and an eruption that began in October 2004 continued into 2026.

White Island volcano (New Zealand): 6 earthquakes up to magnitude 2.9

6 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 12.00 and 5.00 km.
Earthquake details: (only 5 largest)
2.9 quake New Zealand Sep 30, 2026 04:01 am (GMT +13) (10 km NW)
2.7 quake New Zealand Sep 30, 2026 08:14 am (GMT +13) (7 km SSE)
2.6 quake New Zealand Sep 30, 2026 08:31 am (GMT +13) (7 km SSE)
2.6 quake New Zealand Sep 30, 2026 04:04 am (GMT +13) (7 km W)
2.3 quake New Zealand Sep 30, 2026 05:47 am (GMT +13) (8 km WSW)
All earthquakes at White Island
Whakaari/White Island is an active offshore stratovolcano in New Zealand’s Bay of Plenty. A deadly explosion struck visitors in December 2019, and further eruptive activity was recorded in 2024–26.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/367938/Volcano-earthquake-report-2026-09-30.html