Volcano earthquake report for Wednesday, 30 September 2026

Quakes detected near: Agua (2 quakes between mag 2.3-2.5), Balut (3 quakes between mag 2.3-3.2), Bardarbunga (4 quakes between mag 0.6-1.8), Clear Lake (19 quakes between mag 0.4-1.3), Coso (2 quakes between mag 0.9-1.1), Cuilapa-Barbarena (1 quake mag 1.9)
Eldey (3 quakes between mag 1.7-1.9), Etna (1 quake mag 1.3), Fani Maoré (2 quakes between mag 1.9-2.5), Fisher (1 quake mag 1.4), Flores (37 quakes between mag 1.2-4.1), Gareloi (1 quake mag 1.0), Hrómundartindur (24 quakes between mag 0.0-2.1), Hulubelu (2 quakes between mag 2.5-2.6), Kilauea (3 quakes between mag 1.7-2.6), 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 (3 quakes between mag 1.6-2.2), 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), Suwanosejima (2 quakes between mag 2.5-2.7) (updated 23h50)\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): 2 earthquakes up to magnitude 2.5

2 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 2.90 and 2.00 km.
Earthquake details:
2.5 quake Guatemala Sep 30, 2026 01:04 pm (GMT -6) (5 km ESE)
2.3 quake 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): 3 earthquakes up to magnitude 3.2

3 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 26.00 and 5.00 km.
Earthquake details:
3.2 quake Mindanao, Philippines, Sep 30, 2026 11:53 am (GMT +8) (17 km NNW)
2.6 quake 011 km N 78° W of Balut Island (Municipality of Sarangani) (Davao Occidental) Sep 30, 2026 05:00 pm (GMT +8) (6 km NW)
2.3 quake Philippines: 016 km S 72° W of Balut Island (Municipality of Sarangani) (Davao Occidental) 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 22 hours, the last being recorded quake 1 hour 30 minutes ago. Hypocenter depths ranged between 11.66 and 0.00 km.
Earthquake details: (only 5 largest)
1.3 quake 7 km NW of the Geysers, CA, Sep 30, 2026 03:19 pm (GMT -7) (18 km SSW)
1.3 quake 9 km NW of the Geysers, CA, Sep 30, 2026 09:52 am (GMT -7) (17 km SSW)
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)
All earthquakes at Clear Lake

Fani Maoré volcano (Indian Ocean): 2 earthquakes up to magnitude 2.5

2 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 44.15 and 33.15 km.
Earthquake details:
2.5 quake Event of Magnitude 2.5, Near Mamoudzou, Sep 30, 2026 10:09 am (GMT +3) (9 km NNW)
1.9 quake Event of Magnitude 1.9, Near Mamoudzou, Sep 30, 2026 02:39 pm (GMT +3) (18 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): 37 earthquakes up to magnitude 4.1

Possible earthquake swarm: 37 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 8.60 and 0.10 km.
Earthquake details: (only 5 largest)
4.1 quake Guatemala Sep 30, 2026 02:24 am (Guatemala time) (14 km WNW)
4.0 quake Guatemala Sep 30, 2026 08:24 am (Guatemala time) (14 km NW)
3.0 quake Guatemala Sep 30, 2026 02:43 am (GMT -6) (15 km WNW)
3.0 quake Guatemala Sep 30, 2026 08:43 am (GMT -6) (14 km WNW)
2.9 quake 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): 24 earthquakes up to magnitude 2.1

Possible earthquake swarm: 24 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 36 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)
0.9 quake Iceland: 0.8 km NNW of Raufarhólshellir Sep 30, 2026 11:14 pm (Reykjavik time) (16 km SSW)
0.8 quake Iceland: 2.9 km E of Hveradalir Sep 30, 2026 08:51 pm (Reykjavik 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 3 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
2.6 quake Southern Sumatra, Indonesia, Oct 1, 2026 03:50 am (GMT +7) (4 km SE)
2.5 quake Southern Sumatra, 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 2.6

3 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 30.50 and 0.17 km.
Earthquake details:
2.6 quake 13 km NE of Pāhala, Hawaii, Sep 30, 2026 05:02 am (GMT -10) (19 km SW)
1.8 quake 5 km WSW of Volcano, Hawaii, Sep 29, 2026 04:10 pm (GMT -10) (1 km ESE)
1.7 quake 14 km S of Volcano, Hawaii, 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 9 hours ago. Hypocenter depths ranged between 11.00 and 4.30 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)
2.3 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)): 3 earthquakes up to magnitude 2.2

3 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 6.14 and 1.00 km.
Earthquake details:
2.2 quake 26 km E of Honaunau-Napoopoo, Hawaii, Sep 29, 2026 10:06 pm (GMT -10) (6 km S)
2.2 quake 25 km E of Honaunau-Napoopoo, Hawaii, Sep 29, 2026 10:59 pm (GMT -10) (7 km SSW)
1.6 quake 14 km N of Pāhala, Hawaii, Sep 30, 2026 11:18 am (GMT -10) (19 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 22 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.

Numazawa volcano (Honshu): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 8 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 Japan: Western Fukushima Pref 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 15 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 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.

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 11 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
2.7 quake Ryukyu Islands, Japan, Sep 30, 2026 06:46 pm (GMT +9) (11 km NE)
2.5 quake Ryukyu Islands, 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