Volcano earthquake report for Thursday, 29 Jul 2021

Quakes detected near: Brennisteinsfjöll (14 quakes between mag 0.1-2.2), Bulusan (1 quake mag 2.2), Buzzard Creek (1 quake mag 1.3), Chiginagak (1 quake mag 3.5), Clear Lake (21 quakes between mag 0.3-2.1), Coso (3 quakes between mag 0.1-1.8)
Cuilapa-Barbarena (1 quake mag 3.2), Eldey (2 quakes between mag 1.2-1.2), Fourpeaked (1 quake mag 2.1), Katla (12 quakes between mag 0.8-3.2), Kialagvik (1 quake mag 2.3), Kilauea (4 quakes between mag 1.8-2.1), Makaturing (1 quake mag 2.2), Mammoth Mountain (3 quakes between mag 0.3-1.7), Mombacho (1 quake mag 2.6), Paco (2 quakes between mag 2.7-3.3), Sousaki (2 quakes between mag 1.5-1.6), Taal (1 quake mag 3.0), Tjörnes Fracture Zone (1 quake mag 5.0) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 20 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:

Brennisteinsfjöll volcano (Reykjanes Peninsula, Iceland): 14 earthquakes up to magnitude 2.2

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 10.7 and 6.3 km.
Earthquake details: (only 5 largest)
2.2 quake Iceland: 5.8 Km SSE of Helgafell 29 July 2021 05:46 GMT (6 km NNE)
1.8 quake Iceland: 5.9 Km SSE of Helgafell 29 July 2021 00:32 GMT (5 km NNE)
0.9 quake Iceland: 5.8 Km SSE of Helgafell 29 July 2021 00:07 GMT (5 km NNE)
0.7 quake Iceland: 10.1 Km S of Helgafell 29 July 2021 00:51 GMT (1 km E)
0.4 quake Iceland: 5.0 Km E of Bláfjallaskáli 29 July 2021 05:07 GMT (15 km ENE)
All earthquakes at Brennisteinsfjöll

Bulusan volcano (Luzon Island): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.0 km depth at 9 km distance NW from the volcano.
Earthquake details:
2.2 quake Philippines Sea, 11 km west of Sorsogon, Bicol, Philippines, 30 July 2021 - 01:44 AM (PST) (9 km NW)
All earthquakes at Bulusan

Chiginagak volcano (Alaska Peninsula): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.5 km depth at 15 km distance SE from the volcano.
Earthquake details:
3.5 quake Lake and Peninsula Parish, 171 mi west of Saint Paul, Kodiak Island, Alaska, USA, 29 July 2021 10:33 GMT (15 km SE)
All earthquakes at Chiginagak

Clear Lake volcano (California): 21 earthquakes up to magnitude 2.1

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 15 minutes ago. Hypocenter depths ranged between 3.1 and 0.2 km.
Earthquake details: (only 5 largest)
2.1 quake 4km NW of The Geysers, CA, 29 July 2021 04:38 GMT (19 km S)
1.9 quake 6km NW of The Geysers, CA, 29 July 2021 06:30 GMT (19 km S)
1.9 quake 6km WNW of Cobb, CA, 29 July 2021 11:06 GMT (15 km S)
1.8 quake 4km W of Cobb, CA, 29 July 2021 14:08 GMT (16 km S)
1.7 quake 8km WNW of Cobb, CA, 29 July 2021 21:45 GMT (15 km SSW)
All earthquakes at Clear Lake

Cuilapa-Barbarena volcano (Guatemala): magnitude 3.2 earthquake

A magnitude 3.2 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.0 km depth at 12 km distance NE from the volcano.
Earthquake details:
3.2 quake Departamento de Santa Rosa, 34 km southeast of Guatemala City, Departamento de Guatemala, 2021-07-28 20:40:12 (12 km NE)
All earthquakes at Cuilapa-Barbarena

Fourpeaked volcano (Alaska Peninsula): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.6 km depth at 8 km distance SSE from the volcano.
Earthquake details:
2.1 quake 82 Km NNW of Aleneva, Alaska, 29 July 2021 09:08 GMT (8 km SSE)
All earthquakes at Fourpeaked

Katla volcano (Iceland): 12 earthquakes up to magnitude 3.2

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 3.0 and 0.1 km.
Earthquake details: (only 5 largest)
3.2 quake Iceland: 5.9 Km E of Goðabunga 29 July 2021 19:20 GMT (4 km NNW)
3.2 quake Iceland: 7.3 Km E of Goðabunga 29 July 2021 19:22 GMT (3 km NW)
1.9 quake Iceland: 5.6 Km NNW of Hábunga 29 July 2021 19:28 GMT (3 km W)
1.7 quake Iceland: 9.0 Km N of Hábunga 29 July 2021 02:06 GMT (2 km N)
1.6 quake Iceland: 10.9 Km NE of Goðabunga 29 July 2021 19:33 GMT (9 km N)
All earthquakes at Katla

Kialagvik volcano (Alaska Peninsula): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 16.7 km depth at 10 km distance NNW from the volcano.
Earthquake details:
2.3 quake 44 Km SE of Ugashik, Alaska, 29 July 2021 10:30 GMT (10 km NNW)
All earthquakes at Kialagvik

Kilauea volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.1

4 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 2.8 and 0.6 km.
Earthquake details:
2.1 quake 9 Km S of Fern Forest, Hawaii, 29 July 2021 06:40 GMT (17 km E)
1.8 quake 5 Km SW of Volcano, Hawaii, 29 July 2021 21:42 GMT (1 km ENE)
1.8 quake 7 Km S of Volcano, Hawaii, 29 July 2021 20:15 GMT (7 km ESE)
1.8 quake 10 Km SSW of Fern Forest, Hawaii, 29 July 2021 13:30 GMT (14 km ESE)
All earthquakes at Kilauea

Makaturing volcano (Mindanao): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 2 km distance SSE from the volcano.
Earthquake details:
2.2 quake Province of Lanao del Sur, 30 km north of Parang, Philippines, 29 July 2021 - 11:29 AM (PST) (2 km SSE)
All earthquakes at Makaturing

Mombacho volcano (Nicaragua): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.0 km depth at 4 km distance ENE from the volcano.
Earthquake details:
2.6 quake 9.7 km south of Granada, Nicaragua, 2021-07-29 07:50:18 (4 km ENE)
All earthquakes at Mombacho

Paco volcano (Mindanao): 2 earthquakes up to magnitude 3.3

2 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 15.0 and 1.0 km.
Earthquake details:
3.3 quake 34 km south of Surigao City, Province of Surigao del Norte, Caraga, Philippines, 30 July 2021 - 12:07 AM (PST) (12 km SSE)
2.7 quake 29 km south of Surigao City, Province of Surigao del Norte, Caraga, Philippines, 29 July 2021 - 09:41 AM (PST) (16 km SW)
All earthquakes at Paco

Taal volcano (Luzon Island): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 4 km distance N from the volcano.
Earthquake details:
Unconfirmed seismic-like event reported: Province of Batangas, 9.9 km southeast of Tagaytay, Philippines, 29 July 2021 07:05 GMT (4 km N)
All earthquakes at Taal

Tjörnes Fracture Zone volcano (Iceland): magnitude 5.0 earthquake

A magnitude 5.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 0.2 km depth at 11 km distance W from the volcano.
Earthquake details:
5.0 quake Iceland: 28.2 Km NE of Flatey 29 Jul 6:25 am (GMT +0) (11 km W)
All earthquakes at Tjörnes Fracture Zone