Volcano earthquake report for Thursday, 31 Jul 2025
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 31 Jul 2025 Number in brackets indicate nr of quakes.

Quakes detected near: Agua (1 quake mag 3.3), Akuseki-jima (7 quakes between mag 1.9-3.3), Akyarlar (1 quake mag 2.0), Apaneca Range (14 quakes between mag 2.1-3.7), Brennisteinsfjöll (4 quakes between mag 0.3-1.0), Campi Flegrei (Phlegrean Fields) (6 quakes between mag 0.2-1.2)
Cerro Singüil (12 quakes between mag 1.8-3.7), Clear Lake (37 quakes between mag 0.2-1.3), Coso (3 quakes between mag 0.7-1.4), Eldey (1 quake mag 1.5), Ghegam (1 quake mag 2.7), Grímsvötn (1 quake mag 1.7), Hakone (1 quake mag 1.0), Hiuchi (3 quakes between mag 0.5-1.1), Irazu (1 quake mag 1.3), Isla El Tigre (3 quakes between mag 2.2-3.1), Katla (5 quakes between mag 0.4-1.8), Kolumbo (4 quakes between mag 1.0-2.0), Krísuvík (23 quakes between mag 0.1-1.2), Ljósufjöll (7 quakes between mag 0.5-2.0), Madeira (1 quake mag 3.0), Mahagnao (1 quake mag 3.0), Maunaloa (1 quake mag 2.1), Michoacán-Guanajuato (23 quakes between mag 2.7-3.5), Mount Rainier (7 quakes between mag 0.1-1.0), Niigata-Yake-yama (1 quake mag 1.5), Oshima (1 quake mag 1.5), Oshima-Oshima (2 quakes between mag 1.3-1.4), Osore-yama (2 quakes between mag 0.6-1.0), Otdelniy (1 quake mag 4.9), Popocatépetl (1 quake mag 3.0), Santa Clara (1 quake mag 1.5), Spurr (3 quakes between mag 0.8-1.9), Suwanose-jima (1 quake mag 1.6), Talang (1 quake mag 1.7), Tenerife (6 quakes between mag 0.8-1.5), Thordarhyrna (3 quakes between mag 0.9-1.6), Tjörnes Fracture Zone (6 quakes between mag 0.2-1.0), To-shima (27 quakes between mag 1.2-2.5) (updated 23h50)

Note: 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.

Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:



Agua volcano (Guatemala): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.00 km depth at 2 km distance NE from the volcano.
Earthquake details:
3.3 quake Departamento de Sacatepequez, 29 km southwest of Guatemala City, Guatemala, Jul 31, 2025 06:56 am (GMT -6) (2 km NE)
All earthquakes at Agua

Akuseki-jima volcano (Ryukyu Islands): 7 earthquakes up to magnitude 3.3

7 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 20.00 and 8.60 km.
Earthquake details: (only 5 largest)
3.3 quake East China Sea, Kagoshima-ken, 33 km southwest of Suwanose-jima Island, Japan, Jul 31, 2025 03:38 pm (GMT +9) (12 km SW)
3.1 quake East China Sea, Kagoshima-ken, 42 km southwest of Suwanose-jima Island, Japan, Jul 31, 2025 01:00 pm (GMT +9) (16 km SSW)
2.9 quake East China Sea, Kagoshima-ken, 41 km southwest of Suwanose-jima Island, Japan, Aug 1, 2025 01:49 am (GMT +9) (19 km SSW)
2.5 quake East China Sea, Kagoshima-ken, 39 km southwest of Suwanose-jima Island, Japan, Jul 31, 2025 07:56 pm (GMT +9) (17 km SSW)
2.5 quake East China Sea, Kagoshima-ken, 36 km southwest of Suwanose-jima Island, Japan, Jul 31, 2025 08:26 pm (GMT +9) (12 km SW)
All earthquakes at Akuseki-jima

Apaneca Range volcano (El Salvador): 14 earthquakes up to magnitude 3.7

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 10.00 and 4.00 km.
Earthquake details: (only 5 largest)
3.7 quake EL Salvador Jul 30, 2025 08:05 pm (GMT -6) (18 km NNW)
2.6 quake 12 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 31, 2025 10:15 am (GMT -6) (17 km NNW)
2.6 quake 13 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 31, 2025 12:52 am (GMT -6) (17 km NNW)
2.6 quake 12 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 30, 2025 08:41 pm (GMT -6) (17 km NNW)
2.6 quake 14 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 30, 2025 08:48 pm (GMT -6) (19 km NNW)
All earthquakes at Apaneca Range

Cerro Singüil volcano (El Salvador): 12 earthquakes up to magnitude 3.7

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 9.00 and 4.00 km.
Earthquake details: (only 5 largest)
3.7 quake El Salvador Jul 31, 2025 03:43 am (GMT -6) (16 km W)
3.3 quake 23 km south of Jutiapa, Departamento de Jutiapa, Guatemala, Jul 31, 2025 05:12 am (GMT -6) (19 km WNW)
3.3 quake 15 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 31, 2025 02:51 am (GMT -6) (17 km W)
3.2 quake Guatemala Jul 31, 2025 01:13 am (GMT -6) (18 km W)
3.1 quake 14 km north of Ahuachapan, Departamento de Ahuachapan, El Salvador, Jul 30, 2025 09:25 pm (GMT -6) (17 km W)
All earthquakes at Cerro Singüil

Clear Lake volcano (California): 37 earthquakes up to magnitude 1.3

Possible earthquake swarm: 37 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 31 minutes ago. Hypocenter depths ranged between 13.57 and 0.50 km.
Earthquake details: (only 5 largest)
1.3 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Jul 31, 2025 04:19 pm (GMT -7) (16 km SSW)
1.1 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Jul 31, 2025 08:52 am (GMT -7) (19 km S)
1.1 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Jul 31, 2025 01:35 pm (GMT -7) (18 km SSW)
1.0 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Jul 30, 2025 09:26 pm (GMT -7) (18 km SSW)
1.0 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Jul 31, 2025 04:14 pm (GMT -7) (16 km S)
All earthquakes at Clear Lake

Ghegam volcano (Armenia): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 14 km distance E from the volcano.
Earthquake details:
2.7 quake 22 km southeast of Gavar, Geghark'unik'i Marz, Armenia, Jul 31, 2025 10:26 pm (GMT +4) (14 km E)
All earthquakes at Ghegam

Isla El Tigre volcano (Honduras): 3 earthquakes up to magnitude 3.1

3 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 9.00 and 5.00 km.
Earthquake details:
3.1 quake North Pacific Ocean, 30 km southwest of San Lorenzo, Honduras, Jul 30, 2025 07:10 pm (GMT -6) (6 km WNW)
2.4 quake North Pacific Ocean, 30 km southwest of San Lorenzo, Honduras, Jul 31, 2025 01:21 am (GMT -6) (6 km WNW)
2.2 quake North Pacific Ocean, 32 km southwest of San Lorenzo, Honduras, Jul 31, 2025 03:32 pm (GMT -6) (8 km WNW)
All earthquakes at Isla El Tigre

Krísuvík volcano (Reykjanes Peninsula, Iceland): 23 earthquakes up to magnitude 1.2

Possible earthquake swarm: 23 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 6.70 and 3.30 km.
Earthquake details: (only 5 largest)
1.2 quake Iceland: 3.0 km NNE of Krýsuvík Jul 31, 2025 10:23 am (Reykjavik time) (3 km SE)
1.0 quake Iceland: 1.7 km N of Krýsuvík Jul 31, 2025 09:04 am (Reykjavik time) (3 km SSE)
0.8 quake Iceland: 1.7 km N of Krýsuvík Jul 31, 2025 09:04 am (Reykjavik time) (4 km SSE)
0.8 quake Iceland: 2.6 km N of Krýsuvík Jul 31, 2025 06:31 am (Reykjavik time) (3 km SSE)
0.7 quake Iceland: 2.6 km N of Krýsuvík Jul 31, 2025 09:10 am (Reykjavik time) (3 km SSE)
All earthquakes at Krísuvík

Madeira volcano (Madeira): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 19 km distance W from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 28 km west of Funchal, Madeira, Portugal, Jul 31, 2025 11:44 am (GMT +1) (19 km W)
All earthquakes at Madeira

Mahagnao volcano (Central Philippines): magnitude 3.0 earthquake

A magnitude 3.0 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 19 km distance ENE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 23 km south of Palo, Province of Leyte, Eastern Visayas, Philippines, Jul 31, 2025 08:30 am (GMT +8) (19 km ENE)
All earthquakes at Mahagnao

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.05 km depth at 13 km distance ESE from the volcano.
Earthquake details:
2.1 quake 33 mi southwest of Hilo, Hawaii County, Hawaii, United States, Jul 30, 2025 06:29 pm (GMT -10) (13 km ESE)
All earthquakes at Maunaloa

Michoacán-Guanajuato volcano (Western & Central Mexico): 23 earthquakes up to magnitude 3.5

Possible earthquake swarm: 23 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 20.00 and 12.40 km.
Earthquake details: (only 5 largest)
3.5 quake 31 km west of Uruapan, Estado de Michoacan de Ocampo, Mexico, Jul 31, 2025 01:35 am (GMT -6) (13 km SW)
3.5 quake 35 km north of Apatzingan, Estado de Michoacan de Ocampo, Mexico, Jul 30, 2025 10:24 pm (GMT -6) (19 km WSW)
3.5 quake 32 km west of Uruapan, Estado de Michoacan de Ocampo, Mexico, Jul 30, 2025 08:46 pm (GMT -6) (14 km SW)
3.5 quake 32 km west of Uruapan, Estado de Michoacan de Ocampo, Mexico, Jul 31, 2025 01:05 am (GMT -6) (15 km SW)
3.4 quake 29 km west of Uruapan, Estado de Michoacan de Ocampo, Mexico, Jul 31, 2025 01:42 am (GMT -6) (10 km SW)
All earthquakes at Michoacán-Guanajuato

Otdelniy volcano (Southern Kamchatka): magnitude 4.9 earthquake

A magnitude 4.9 earthquake occurred at the volcano 12 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 16 km distance NNE from the volcano.
Earthquake details:
4.9 quake Ust'-Bol'sheretskiy Rayon, 88 km southwest of Vilyuchinsk, Yelizovsky District, Kamchatka, Russia, Jul 31, 2025 11:25 pm (Kamchatka time) (16 km NNE)
All earthquakes at Otdelniy

Popocatépetl volcano (Western & Central Mexico): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 19 km distance NW from the volcano.
Earthquake details:
Reported quake or seismic-like event: 4.8 km northwest of Mexico City, Ciudad de Mexico, Mexico, Jul 31, 2025 10:41 am (GMT -6) (19 km NW)
All earthquakes at Popocatépetl

To-shima volcano (Izu Islands): 27 earthquakes up to magnitude 2.5

Possible earthquake swarm: 27 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 18 hours ago. Hypocenter depths ranged between 13.40 and 0.00 km.
Earthquake details: (only 5 largest)
2.5 quake North Pacific Ocean, Tokyo, 26 km east of Shimoda, Shizuoka, Japan, Jul 31, 2025 09:06 am (GMT +9) (12 km NW)
2.5 quake North Pacific Ocean, Tokyo, 26 km east of Shimoda, Shizuoka, Japan, Jul 31, 2025 09:30 am (GMT +9) (11 km NNW)
2.5 quake North Pacific Ocean, Tokyo, 26 km east of Shimoda, Shizuoka, Japan, Jul 31, 2025 09:06 am (GMT +9) (12 km NNW)
2.4 quake North Pacific Ocean, Tokyo, 26 km east of Shimoda, Shizuoka, Japan, Jul 31, 2025 09:30 am (GMT +9) (12 km NNW)
2.3 quake North Pacific Ocean, Tokyo, 26 km east of Shimoda, Shizuoka, Japan, Jul 31, 2025 08:58 am (GMT +9) (11 km NW)
All earthquakes at To-shima
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