Volcano earthquake report for Thursday, 4 Aug 2022

Quakes detected near: Askja (2 quakes between mag 0.3-1.1), Bardarbunga (1 quake mag 2.3), Binuluan (1 quake mag 2.3), Brennisteinsfjöll (21 quakes between mag 0.1-2.0), Campi Flegrei (Phlegrean Fields) (2 quakes between mag 1.0-1.1), Cerro Negro de Mayasquer (3 quakes between mag 3.0-3.8)
Chiquimula Volcanic Field (1 quake mag 2.6), Clear Lake (21 quakes between mag 0.4-1.8), Cumbal (1 quake mag 3.4), Etna (4 quakes between mag 1.4-3.0), Fagradalsfjall (48 quakes between mag 0.1-4.8), Grímsvötn (2 quakes between mag 0.6-1.8), Hekla (1 quake mag 1.0), Herdubreid (1 quake mag 1.1), Hofsjökull volcano (1 quake mag 1.5), Ilopango (2 quakes between mag 2.0-2.9), Krísuvík (84 quakes between mag 0.1-3.4), La Palma (2 quakes between mag 1.6-1.6), Laacher See (1 quake mag 1.8), Loihi (2 quakes between mag 1.8-2.1), Maroa (1 quake mag 1.6), Maunaloa (16 quakes between mag 0.6-2.2), Momotombo (1 quake mag 2.3), Okataina (Tarawera) (3 quakes between mag 1.7-1.9), Patoc (2 quakes between mag 2.0-2.4), Reporoa (1 quake mag 1.7), Reykjanes (9 quakes between mag 0.1-1.7), Salton Buttes (1 quake mag 1.3), Santo Tomas (1 quake mag 3.0), São Jorge (4 quakes between mag 1.5-1.8), Tambora (2 quakes between mag 3.2-4.0), Taupo (6 quakes between mag 1.2-2.4), Tjörnes Fracture Zone (2 quakes between mag 0.5-1.6), Vatnafjöll (1 quake mag 1.0) (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:

Bardarbunga volcano (Iceland): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.5 km depth at 5 km distance NE from the volcano.
Earthquake details:
2.3 quake Iceland: 4.2 Km NE of Bárðarbunga Aug 4, 2022 12:33 pm (GMT +0) (5 km NE)
All earthquakes at Bardarbunga

Binuluan volcano (Luzon Island): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 27.0 km depth at 12 km distance W from the volcano.
Earthquake details:
2.3 quake 18 km southwest of Pasil, Kalinga, Cordillera, Philippines, Aug 4, 2022 8:31 am (GMT +8) (12 km W)
All earthquakes at Binuluan

Brennisteinsfjöll volcano (Reykjanes Peninsula, Iceland): 21 earthquakes up to magnitude 2.0

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 50 minutes ago. Hypocenter depths ranged between 19.3 and 1.0 km.
Earthquake details: (only 5 largest)
2.0 quake Iceland: 5.6 Km SE of Helgafell Aug 4, 2022 3:25 am (GMT +0) (6 km NNE)
1.2 quake Iceland: 7.8 Km E of Krýsuvík Aug 4, 2022 5:43 am (GMT +0) (4 km SW)
1.0 quake Iceland: 9.1 Km ENE of Krýsuvík Aug 4, 2022 12:17 pm (GMT +0) (4 km WNW)
0.9 quake Iceland: 6.9 Km NE of Krýsuvík Aug 4, 2022 10:11 pm (GMT +0) (6 km W)
0.9 quake Iceland: 10.6 Km SW of Bláfjallaskáli Aug 4, 2022 7:20 am (GMT +0) (3 km ESE)
All earthquakes at Brennisteinsfjöll

Cerro Negro de Mayasquer volcano (Colombia): 3 earthquakes up to magnitude 3.8

3 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 8.7 and 3.4 km.
Earthquake details:
3.8 quake Departamento de Nariño, Colombia, 24 km west of Tulcan, Ecuador, Aug 4, 2022 7:47 am (GMT -5) (4 km E)
3.1 quake 21 km west of Tulcan, Provincia del Carchi, Ecuador, Aug 4, 2022 3:30 pm (GMT -5) (12 km SE)
3.0 quake Departamento de Nariño, Colombia, 24 km west of Tulcan, Ecuador, Aug 4, 2022 7:47 am (GMT -5) (4 km ESE)
All earthquakes at Cerro Negro de Mayasquer

Chiquimula Volcanic Field volcano (Guatemala): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 10 km distance WNW from the volcano.
Earthquake details:
2.6 quake Departamento de Zacapa, 12 km northwest of Chiquimula, Guatemala, Aug 3, 2022 6:38 pm (GMT -6) (10 km WNW)
All earthquakes at Chiquimula Volcanic Field

Clear Lake volcano (California): 21 earthquakes up to magnitude 1.8

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 3.6 and 0.7 km.
Earthquake details: (only 5 largest)
1.8 quake 5km W of Cobb, CA, Aug 3, 2022 4:57 pm (GMT -7) (17 km S)
1.6 quake 6km NW of The Geysers, CA, Aug 3, 2022 6:53 pm (GMT -7) (17 km S)
1.2 quake 8km NW of The Geysers, CA, Aug 4, 2022 9:52 am (GMT -7) (16 km SSW)
1.2 quake 4km W of Cobb, CA, Aug 4, 2022 2:20 am (GMT -7) (17 km S)
1.0 quake 4km W of Cobb, CA, Aug 4, 2022 7:41 am (GMT -7) (16 km S)
All earthquakes at Clear Lake

Cumbal volcano (Colombia): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.0 km depth at 14 km distance SE from the volcano.
Earthquake details:
3.4 quake 17 km west of Ipiales, Departamento de Nariño, Colombia, Aug 4, 2022 3:30 pm (GMT -5) (14 km SE)
All earthquakes at Cumbal

Etna volcano (Italy): 4 earthquakes up to magnitude 3.0

4 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 21.6 and 3.7 km.
Earthquake details:
Reported seismic-like event (likely no quake): 30 km north of Catania, Sicily, Italy, Aug 4, 2022 4:02 pm (GMT +2) (0 km SW)
1.9 quake 20 km northwest of Giarre, Catania, Sicily, Italy, Aug 4, 2022 5:35 pm (GMT +2) (14 km NNE)
1.6 quake 14 km northwest of Acireale, Catania, Sicily, Italy, Aug 4, 2022 8:10 pm (GMT +2) (9 km SSE)
1.4 quake Italy: 2 Km W Sant'Alfio (CT) Aug 4, 2022 6:38 pm (GMT +2) (12 km E)
All earthquakes at Etna

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 48 earthquakes up to magnitude 4.8

Possible earthquake swarm: 48 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 7.6 and 0.1 km.
Earthquake details: (only 5 largest)
4.8 quake Iceland: 2.8 Km ENE of Fagradalsfjall Aug 4, 2022 9:46 pm (GMT +0) (3 km NE)
4.6 quake Iceland: 5.3 Km NNE of Grindavík Aug 4, 2022 6:25 am (GMT +0) (6 km WSW)
2.4 quake Iceland: 3.0 Km SW of Keilir Aug 4, 2022 6:16 pm (GMT +0) (4 km NE)
2.0 quake Iceland: 4.7 Km NNE of Grindavík Aug 4, 2022 3:56 pm (GMT +0) (6 km WSW)
1.9 quake Iceland: 1.6 Km E of Fagradalsfjall Aug 4, 2022 1:50 pm (GMT +0) (2 km NE)
All earthquakes at Fagradalsfjall

Ilopango volcano (El Salvador): 2 earthquakes up to magnitude 2.9

2 earthquakes occurred near (under) the volcano during 57 minutes, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 6.0 and 4.0 km.
Earthquake details:
2.9 quake 7.6 km southeast of San Salvador, El Salvador, Aug 4, 2022 11:15 am (GMT -6) (8 km W)
2.0 quake 8.3 km east of San Salvador, El Salvador, Aug 4, 2022 12:12 pm (GMT -6) (7 km W)
All earthquakes at Ilopango

Krísuvík volcano (Reykjanes Peninsula, Iceland): 84 earthquakes up to magnitude 3.4

Possible earthquake swarm: 84 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 54 minutes ago. Hypocenter depths ranged between 8.5 and 1.1 km.
Earthquake details: (only 5 largest)
3.4 quake Iceland: 1.0 Km ENE of Krýsuvík Aug 4, 2022 5:06 pm (GMT +0) (5 km SSE)
3.4 quake Iceland: 2.2 Km SW of Keilir Aug 4, 2022 9:26 am (GMT +0) (5 km W)
2.5 quake Iceland: 2.1 Km WSW of Keilir Aug 4, 2022 10:29 am (GMT +0) (5 km W)
2.3 quake Iceland: 3.9 Km SE of Keilir Aug 4, 2022 3:41 pm (GMT +0) (2 km SSW)
2.1 quake Iceland: 0.8 Km NNE of Krýsuvík Aug 4, 2022 6:10 pm (GMT +0) (4 km SSE)
All earthquakes at Krísuvík

Loihi volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 31.5 and 16.1 km.
Earthquake details:
2.1 quake 21 Km SE of Pāhala, Hawaii, Aug 4, 2022 8:00 am (GMT -10) (17 km NNW)
1.8 quake 19 Km SE of Naalehu, Hawaii, Aug 4, 2022 10:43 am (GMT -10) (18 km WNW)
All earthquakes at Loihi

Maunaloa volcano (Hawai'i (Big Island)): 16 earthquakes up to magnitude 2.2

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 50 minutes ago. Hypocenter depths ranged between 3.0 and 0.3 km.
Earthquake details: (only 5 largest)
2.2 quake 23 Km WNW of Volcano, Hawaii, Aug 4, 2022 1:00 pm (GMT -10) (17 km ENE)
2.1 quake 24 Km E of Honaunau-Napoopoo, Hawaii, Aug 3, 2022 2:04 pm (GMT -10) (7 km SSW)
2.0 quake 30 Km E of Honaunau-Napoopoo, Hawaii, Aug 4, 2022 2:38 am (GMT -10) (4 km NE)
2.0 quake 28 Km E of Honaunau-Napoopoo, Hawaii, Aug 3, 2022 3:08 pm (GMT -10) (1 km ENE)
1.9 quake 37 mi southwest of Hilo, Hawaii County, USA, Aug 3, 2022 7:02 pm (GMT -10) (3 km SE)
All earthquakes at Maunaloa

Momotombo volcano (Nicaragua): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 11 km distance SE from the volcano.
Earthquake details:
2.3 quake Departamento de Managua, 16 km northeast of Nagarote, Nicaragua, Aug 3, 2022 6:37 pm (GMT -6) (11 km SE)
All earthquakes at Momotombo

Patoc volcano (Luzon Island): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 9.0 and 6.0 km.
Earthquake details:
2.4 quake Ilocos, 20 km northwest of Bontoc, Mountain Province, Cordillera, Philippines, Aug 4, 2022 8:30 pm (GMT +8) (18 km WNW)
2.0 quake 22 km northwest of Bontoc, Mountain Province, Cordillera, Philippines, Aug 4, 2022 11:41 pm (GMT +8) (18 km WNW)
All earthquakes at Patoc

Santo Tomas volcano (Luzon Island): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 12 km distance NNE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 1.6 km north of Baguio City, Province of Benguet, Cordillera, Philippines, Aug 4, 2022 11:53 pm (GMT +8) (12 km NNE)
All earthquakes at Santo Tomas

Tambora volcano (Sumbawa): 2 earthquakes up to magnitude 4.0

2 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 10.0 and 10.0 km.
Earthquake details:
4.0 quake 50 km northwest of Dompu, West Nusa Tenggara, Indonesia, Aug 4, 2022 11:04 pm (GMT +8) (10 km ESE)
3.2 quake 53 km northwest of Dompu, West Nusa Tenggara, Indonesia, Aug 5, 2022 3:04 am (GMT +8) (9 km SSE)
All earthquakes at Tambora

Taupo volcano (New Zealand): 6 earthquakes up to magnitude 2.4

6 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 19 minutes ago. Hypocenter depths ranged between 16.7 and 5.0 km.
Earthquake details: (only 5 largest)
2.4 quake 16 km south of Taupo, Waikato, New Zealand, Aug 5, 2022 6:46 am (GMT +12) (1 km ENE)
2.1 quake North Island, 23 km southwest of Taupo, Waikato, New Zealand, Aug 5, 2022 5:53 am (GMT +12) (6 km SW)
1.7 quake 15 km southwest of Taupo, Waikato, New Zealand, Aug 4, 2022 11:59 pm (GMT +12) (3 km N)
1.6 quake 13 km south of Taupo, Waikato, New Zealand, Aug 5, 2022 11:31 am (GMT +12) (4 km NE)
1.4 quake 14 km southwest of Taupo, Waikato, New Zealand, Aug 5, 2022 5:51 am (GMT +12) (3 km NNE)
All earthquakes at Taupo