Volcano earthquake report for Thursday, 3 Aug 2023
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 3 Aug 2023 Number in brackets indicate nr of quakes.

Quakes detected near: Askja (14 quakes between mag 0.1-2.7), Cerro Negro de Mayasquer (1 quake mag 1.7), Churchill (1 quake mag 1.0), Clear Lake (20 quakes between mag 0.3-1.5), Cosigüina (1 quake mag 2.0), Coso (1 quake mag 1.2)
Eldey (2 quakes between mag 1.0-1.0), Fourpeaked (5 quakes between mag 1.1-2.1), Hrómundartindur (1 quake mag 1.2), Katla (3 quakes between mag 0.7-1.3), Kilauea (1 quake mag 2.0), Kuchinoshima (1 quake mag 2.6), Mauna Kea (1 quake mag 2.2), Mount Rainier (3 quakes between mag 0.3-1.0), Reporoa (2 quakes between mag 1.8-1.9), Reykjanes (6 quakes between mag 0.1-1.2), Rinjani (1 quake mag 4.3), Salton Buttes (4 quakes between mag 1.0-2.5), Sand Mountain (1 quake mag 2.0), Spurr (1 quake mag 1.4), Tjörnes Fracture Zone (7 quakes between mag 0.1-1.3), Torfajökull (8 quakes between mag 0.4-1.1), Vesuvius (1 quake mag 1.5) (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:



Askja volcano (Iceland): 14 earthquakes up to magnitude 2.7

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 1 hour 33 minutes ago. Hypocenter depths ranged between 6.4 and 2.7 km.
Earthquake details: (only 5 largest)
2.7 quake Iceland: 4.5 Km W of Dreki Aug 3, 2023 1:19 am (GMT +0) (2 km ENE)
2.5 quake Iceland: 3.3 Km SW of Dreki Aug 3, 2023 9:50 pm (GMT +0) (5 km ESE)
1.3 quake Iceland: 4.1 Km W of Dreki Aug 3, 2023 1:49 am (GMT +0) (3 km ENE)
1.2 quake Iceland: 3.7 Km SW of Dreki Aug 3, 2023 9:52 pm (GMT +0) (4 km ESE)
1.0 quake Iceland: 4.3 Km W of Dreki Aug 3, 2023 1:23 am (GMT +0) (3 km ENE)
All earthquakes at Askja

Clear Lake volcano (California): 20 earthquakes up to magnitude 1.5

Possible earthquake swarm: 20 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 17 minutes ago. Hypocenter depths ranged between 3.5 and 0.4 km.
Earthquake details: (only 5 largest)
1.5 quake 2 Km N of The Geysers, CA, Aug 3, 2023 12:56 pm (GMT -7) (19 km S)
1.2 quake Northern California Aug 3, 2023 8:18 am (GMT -7) (16 km S)
1.1 quake 7 Km NW of The Geysers, CA, Aug 3, 2023 4:11 am (GMT -7) (16 km S)
1.1 quake 7 Km WNW of Cobb, CA, Aug 3, 2023 1:45 am (GMT -7) (15 km S)
1.1 quake 6 Km WNW of The Geysers, CA, Aug 2, 2023 8:23 pm (GMT -7) (19 km SSW)
All earthquakes at Clear Lake

Fourpeaked volcano (Alaska Peninsula): 5 earthquakes up to magnitude 2.1

5 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 15.8 and 9.5 km.
Earthquake details:
2.1 quake 49 mi southeast of Kokhanok, Lake and Peninsula, Alaska, USA, Aug 3, 2023 7:37 am (GMT -8) (19 km NW)
1.2 quake 78 Km SE of Kokhanok, Alaska, Aug 3, 2023 7:58 am (GMT -8) (19 km NW)
1.2 quake Kodiak Island Region, Alaska, Aug 3, 2023 7:44 am (GMT -8) (19 km NW)
1.2 quake 79 Km SE of Kokhanok, Alaska, Aug 2, 2023 7:49 pm (GMT -8) (19 km NW)
1.1 quake 81 Km SE of Kokhanok, Alaska, Aug 2, 2023 7:45 pm (GMT -8) (16 km NW)
All earthquakes at Fourpeaked

Kuchinoshima volcano (Ryukyu Islands): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.2 km depth at 10 km distance ESE from the volcano.
Earthquake details:
2.6 quake East China Sea, 75 km southwest of Miyanoura, Kumage-gun, Kagoshima, Japan, Aug 4, 2023 3:23 am (GMT +9) (10 km ESE)
All earthquakes at Kuchinoshima

Mauna Kea volcano (Hawai'i (Big Island)): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 38.0 km depth at 18 km distance NNE from the volcano.
Earthquake details:
2.2 quake 27 mi northwest of Hilo, Hawaii County, USA, Aug 3, 2023 10:25 am (GMT -10) (18 km NNE)
All earthquakes at Mauna Kea

Rinjani volcano (Lombok): magnitude 4.3 earthquake

A magnitude 4.3 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.0 km depth at 17 km distance N from the volcano.
Earthquake details:
4.3 quake 54 km northeast of Matalam, Lombok, West Nusa Tenggara, Indonesia, Aug 3, 2023 3:41 pm (GMT +8) (17 km N)
All earthquakes at Rinjani

Salton Buttes volcano (California): 4 earthquakes up to magnitude 2.5

4 earthquakes occurred near (under) the volcano during 49 minutes, the last being recorded quake 17 hours ago. Hypocenter depths ranged between 8.6 and 3.2 km.
Earthquake details:
2.5 quake 15 mi north of Brawley, Imperial County, California, USA, Aug 2, 2023 10:36 pm (GMT -7) (5 km ESE)
2.2 quake 15 mi north of Brawley, Imperial County, California, USA, Aug 2, 2023 10:36 pm (GMT -7) (2 km SE)
1.5 quake 8 Km SW of Niland, CA, Aug 2, 2023 11:25 pm (GMT -7) (4 km ESE)
1.0 quake 11 Km SW of Bombay Beach, CA, Aug 2, 2023 11:25 pm (GMT -7) (19 km WNW)
All earthquakes at Salton Buttes
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/217489/Volcano-earthquake-report-for-Thursday-3-Aug-2023.html