Volcano earthquake report for Wednesday, 30 September 2026

Quakes detected near: Agua (1 quake mag 2.3), Balut (4 quakes between mag 2.3-3.2), Bardarbunga (5 quakes between mag 0.6-1.8), Clear Lake (19 quakes between mag 0.4-1.3), Coso (2 quakes between mag 0.9-1.2), Cuilapa-Barbarena (1 quake mag 1.9)
El Chichón (1 quake mag 3.5), Eldey (3 quakes between mag 1.7-1.9), Etna (2 quakes between mag 1.1-1.3), Fani Maoré (3 quakes between mag 1.6-2.5), Fisher (1 quake mag 1.4), Flores (39 quakes between mag 1.2-4.1), Gareloi (1 quake mag 1.0), Hrómundartindur (21 quakes between mag 0.0-2.1), Hulubelu (2 quakes between mag 2.5-2.6), Kilauea (3 quakes between mag 1.7-2.7), Kolbeinsey Ridge (7 quakes between mag 1.5-3.6), La Palma (1 quake mag 1.0), Laacher See (2 quakes between mag 0.8-1.6), Ljósufjöll (4 quakes between mag 0.7-1.5), Maunaloa (4 quakes between mag 1.9-2.2), Nevados Casiri (1 quake mag 3.4), Numazawa (1 quake mag 2.9), Paluweh (1 quake mag 2.9), Pelée (3 quakes between mag 0.2-1.6), Salton Buttes (1 quake mag 1.6), Sandal (1 quake mag 1.1), Stepovak Bay 2 (1 quake mag 2.2), Suwanosejima (2 quakes between mag 2.5-2.7) (updated 21h50)\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 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.90 km depth at 6 km distance E from the volcano.
Earthquake details:
2.3 quake 11 km southeast of Antigua Guatemala, Departamento de Sacatepequez, Guatemala, Sep 30, 2026 07:04 am (GMT -6) (6 km E)
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): 4 earthquakes up to magnitude 3.2

4 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 32.00 and 5.00 km.
Earthquake details:
3.2 quake Celebes Sea, 23 km northwest of Sarangani Island, Philippines, Sep 30, 2026 11:53 am (GMT +8) (17 km NNW)
3.1 quake Celebes Sea, 31 km west of Sarangani Island, Philippines, Sep 30, 2026 06:56 am (GMT +8) (18 km WSW)
2.6 quake Philippine Sea, 16 km west of Sarangani Island, Philippines, Sep 30, 2026 05:00 pm (GMT +8) (6 km NW)
2.3 quake Davao Occidental, Davao, Philippines, Oct 1, 2026 02:22 am (GMT +8) (10 km WSW)
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.

Clear Lake volcano (California): 19 earthquakes up to magnitude 1.3

Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 1 hour 1 minutes ago. Hypocenter depths ranged between 11.66 and 0.00 km.
Earthquake details: (only 5 largest)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 30, 2026 09:52 am (GMT -7) (17 km SSW)
1.3 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Sep 29, 2026 11:18 pm (GMT -7) (15 km SSW)
1.3 quake Lake County, 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 29, 2026 08:22 pm (GMT -7) (16 km S)
1.3 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Sep 29, 2026 05:54 pm (GMT -7) (19 km S)
1.2 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 30, 2026 01:49 pm (GMT -7) (18 km SSW)
All earthquakes at Clear Lake

El Chichón volcano (Southern Mexico): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.80 km depth at 4 km distance ESE from the volcano.
Earthquake details:
3.5 quake 67 km north of Tuxtla, Estado de Chiapas, Mexico, Sep 29, 2026 05:18 pm (GMT -6) (4 km ESE)
All earthquakes at El Chichón
El Chichón is a volcanic complex in southern Mexico whose devastating 1982 eruption destroyed its summit dome, produced deadly pyroclastic flows and formed a new crater lake. Geological deposits preserve evidence of repeated explosive eruptions during approximately the past 8,500 years.

Fani Maoré volcano (Indian Ocean): 3 earthquakes up to magnitude 2.5

3 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 44.15 and 9.86 km.
Earthquake details:
2.5 quake 48 km east of Mamoudzou, Mamoudzou, Mayotte, Sep 30, 2026 10:09 am (GMT +3) (9 km NNW)
1.9 quake 41 km east of Mamoudzou, Mamoudzou, Mayotte, Sep 30, 2026 02:39 pm (GMT +3) (18 km NW)
1.6 quake 62 km east of Mamoudzou, Mamoudzou, Mayotte, Sep 30, 2026 01:54 am (GMT +3) (11 km ENE)
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): 39 earthquakes up to magnitude 4.1

Possible earthquake swarm: 39 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 10.00 and 0.10 km.
Earthquake details: (only 5 largest)
4.1 quake 24 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 30, 2026 02:24 am (Guatemala time) (14 km WNW)
4.0 quake 25 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 30, 2026 08:24 am (Guatemala time) (14 km NW)
3.0 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 30, 2026 02:43 am (GMT -6) (15 km WNW)
3.0 quake 24 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 30, 2026 08:43 am (GMT -6) (14 km WNW)
2.9 quake Departamento de Santa Rosa, 24 km west of Jutiapa, Guatemala, Sep 30, 2026 08:31 am (GMT -6) (13 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.

Hrómundartindur volcano (Iceland): 21 earthquakes up to magnitude 2.1

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 59 minutes ago. Hypocenter depths ranged between 7.50 and 0.00 km.
Earthquake details: (only 5 largest)
2.1 quake 2.7 km E of Hveradalir Sep 30, 2026 12:17 pm (Universal Time) (7 km S)
1.6 quake 5.6 km SSE of Skálafell Sep 30, 2026 08:32 am (Universal Time) (15 km S)
1.4 quake 2.8 km E of Hveradalir Sep 30, 2026 12:16 pm (Universal Time) (7 km S)
0.8 quake Iceland: 2.9 km E of Hveradalir Sep 30, 2026 08:51 pm (Reykjavik time) (7 km S)
0.7 quake 3.0 km E of Hveradalir Sep 30, 2026 12:20 pm (Universal Time) (7 km S)
All earthquakes at Hrómundartindur
Hrómundartindur is a small volcanic system in southwestern Iceland with an active geothermal area at Ölkeduháls. Its last eruption is uncertain, but activity is thought to have occurred about 10,000 years ago.

Hulubelu volcano (Sumatra): 2 earthquakes up to magnitude 2.6

2 earthquakes occurred near (under) the volcano during 44 minutes, the last being recorded quake 59 minutes ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
2.6 quake Kabupaten Tanggamus, Lampung, Indonesia, Oct 1, 2026 03:50 am (GMT +7) (4 km SE)
2.5 quake Kabupaten Tanggamus, 74 km west of Bandar Lampung, Indonesia, Oct 1, 2026 03:06 am (GMT +7) (3 km SE)
All earthquakes at Hulubelu
Hulubelu is a 4-km-long volcanic depression in southeastern Sumatra. Its last eruption is not precisely dated, and none is known from approximately the past 11,700 years.

Kilauea volcano (Hawai'i (Big Island)): 3 earthquakes up to magnitude 2.7

3 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 29.33 and 0.17 km.
Earthquake details:
2.7 quake 36 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 30, 2026 05:02 am (GMT -10) (19 km SW)
1.8 quake 3.4 mi southwest of Volcano, Hawaii County, Hawaii, United States, Sep 29, 2026 04:10 pm (GMT -10) (1 km ESE)
1.7 quake 30 mi south of Hilo, Hawaii County, Hawaii, United States, Sep 29, 2026 08:36 pm (GMT -10) (13 km SSE)
All earthquakes at Kilauea

Kolbeinsey Ridge volcano (Iceland): 7 earthquakes up to magnitude 3.6

7 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 11.00 and 4.30 km.
Earthquake details: (only 5 largest)
3.6 quake 63 km north of Siglufjordur, Northeast, Iceland, 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)
2.3 quake Iceland: 35.6 km WNW of Grímsey Sep 30, 2026 02:23 pm (Reykjavik 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)
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)): 4 earthquakes up to magnitude 2.2

4 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 32 minutes ago. Hypocenter depths ranged between 6.18 and 1.00 km.
Earthquake details:
2.2 quake 16 mi east of Honaunau-Napoopoo, Hawaii County, Hawaii, United States, Sep 29, 2026 10:06 pm (GMT -10) (6 km S)
2.2 quake 41 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 29, 2026 10:59 pm (GMT -10) (7 km SSW)
2.1 quake 9.9 mi north of Pāhala, Hawaii County, Hawaii, United States, Sep 30, 2026 11:18 am (GMT -10) (19 km SE)
1.9 quake 12 mi north of Pāhala, Hawaii County, Hawaii, United States, 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 20 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 71 km northeast of Tacna, Tacna, 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.

Numazawa volcano (Honshu): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.70 km depth at 13 km distance WSW from the volcano.
Earthquake details:
2.9 quake 47 km west of Aizu-Wakamatsu, Fukushima, Japan, Oct 1, 2026 12:58 am (GMT +9) (13 km WSW)
All earthquakes at Numazawa
Numazawa is a Japanese shield volcano with a 1.5 × 2 km lake-filled caldera. Its only listed confirmed eruptive period was a major explosive and effusive event several thousand years ago.

Paluweh volcano (Lesser Sunda Islands): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 17.00 km depth at 13 km distance WSW from the volcano.
Earthquake details:
2.9 quake Flores Sea, 53 km north of Ende, Kabupaten Ende, East Nusa Tenggara, 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 23 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 38 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, 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): 2 earthquakes up to magnitude 2.7

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
2.7 quake East China Sea, Kagoshima-ken, 11 km northeast of Suwanose-jima Island, Japan, Sep 30, 2026 06:46 pm (GMT +9) (11 km NE)
2.5 quake East China Sea, Kagoshima-ken, 11 km northeast of Suwanose-jima Island, Japan, Sep 30, 2026 09:28 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.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/367938/Volcano-earthquake-report-2026-09-30.html