Volcano earthquake report for Saturday, 14 Aug 2021

Quakes detected near: Clear Lake (18 quakes between mag 0.4-1.7), Coso (5 quakes between mag 0.7-1.4), Etna (1 quake mag 3.0), Granada (1 quake mag 2.7), Herdubreid (9 quakes between mag 0.3-2.5), Katla (11 quakes between mag 0.2-3.1)
Maunaloa (4 quakes between mag 1.9-2.1), Miravalles (1 quake mag 2.7), Nisyros (2 quakes between mag 2.2-2.4), Paco (1 quake mag 3.6), Pelée (1 quake mag 1.3), Salton Buttes (1 quake mag 1.8), Tenerife (2 quakes between mag 1.2-3.0), Tenorio (1 quake mag 3.8), Tjörnes Fracture Zone (14 quakes between mag 0.1-1.6) (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:

Clear Lake volcano (California): 18 earthquakes up to magnitude 1.7

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 46 minutes ago. Hypocenter depths ranged between 3.9 and 0.5 km.
Earthquake details: (only 5 largest)
1.7 quake 6km NW of The Geysers, CA, 14 Aug 2021 2:08 am (GMT -7) (18 km SSW)1.4 quake 7km NW of The Geysers, CA, 14 Aug 2021 6:13 am (GMT -7) (16 km S)1.0 quake 6km W of Cobb, CA, 14 Aug 2021 12:59 am (GMT -7) (16 km S)0.9 quake 8km NW of The Geysers, CA, 14 Aug 2021 1:29 am (GMT -7) (16 km SSW)0.9 quake 7km NW of The Geysers, CA, 14 Aug 2021 11:13 am (GMT -7) (16 km S)All earthquakes at Clear Lake

Etna volcano (Italy): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 0 km distance SW from the volcano.
Earthquake details:
Unconfirmed quake or seismic-like event reported: Near Catania, Sicily, Italy, 14 Aug 2021 3:16 pm (GMT +2) (0 km SW)All earthquakes at Etna

Granada volcano (Nicaragua): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 4 km distance E from the volcano.
Earthquake details:
2.7 quake 2.1 km southeast of Granada, Nicaragua, 14 Aug 2021 11:41 am (GMT -6) (4 km E)All earthquakes at Granada

Herdubreid volcano (Iceland): 9 earthquakes up to magnitude 2.5

9 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 11.1 and 5.5 km.
Earthquake details: (only 5 largest)
2.5 quake Iceland: 9.9 Km SSW of Herðubreiðarfjöll 14 Aug 2021 2:12 pm (GMT +0) (12 km NW)1.9 quake Iceland: 9.8 Km SSW of Herðubreiðarfjöll 14 Aug 2021 2:12 pm (GMT +0) (12 km NW)1.6 quake Iceland: 9.7 Km SSW of Herðubreiðarfjöll 14 Aug 2021 2:15 pm (GMT +0) (12 km NW)1.2 quake Iceland: 10.3 Km SSW of Herðubreiðarfjöll 14 Aug 2021 2:38 pm (GMT +0) (12 km NW)0.9 quake Iceland: 10.4 Km SSW of Herðubreiðarfjöll 14 Aug 2021 8:24 pm (GMT +0) (12 km NW)All earthquakes at Herdubreid

Katla volcano (Iceland): 11 earthquakes up to magnitude 3.1

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 7.5 and 0.1 km.
Earthquake details: (only 5 largest)
3.1 quake Iceland: 7.4 Km ENE of Goðabunga 14 Aug 2021 7:16 am (GMT +0) (5 km NW)1.0 quake Iceland: 7.7 Km ENE of Goðabunga 14 Aug 2021 7:09 am (GMT +0) (5 km NNW)1.0 quake Iceland: 5.1 Km N of Hábunga 14 Aug 2021 1:53 pm (GMT +0) (3 km WSW)0.8 quake Iceland: 9.1 Km ENE of Goðabunga 14 Aug 2021 7:56 am (GMT +0) (4 km NNW)0.8 quake Iceland: 8.2 Km ENE of Goðabunga 14 Aug 2021 7:01 am (GMT +0) (4 km NNW)All earthquakes at Katla

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

4 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 13 minutes ago. Hypocenter depths ranged between 7.6 and 2.1 km.
Earthquake details:
2.1 quake 22 Km ENE of Honaunau-Napoopoo, Hawaii, 14 Aug 2021 2:43 am (GMT -10) (9 km NW)2.1 quake 20 Km N of Pāhala, Hawaii, 13 Aug 2021 6:40 pm (GMT -10) (16 km SE)1.9 quake 11 Km ENE of Honaunau-Napoopoo, Hawaii, 14 Aug 2021 1:37 pm (GMT -10) (17 km W)1.9 quake 26 Km E of Honaunau-Napoopoo, Hawaii, 13 Aug 2021 10:02 pm (GMT -10) (6 km S)All earthquakes at Maunaloa

Miravalles volcano (Costa Rica): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 3.0 km depth at 5 km distance SW from the volcano.
Earthquake details:
2.7 quake Bagaces, Provincia de Guanacaste, Costa Rica, 13 Aug 2021 9:32 pm (GMT -6) (5 km SW)All earthquakes at Miravalles

Nisyros volcano (Greece): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 59 seconds, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 4.7 and 3.7 km.
Earthquake details:
2.4 quake Aegean Sea, 54 km south of Kos, Dodecanese, South Aegean, Greece, 14 Aug 2021 12:30 pm (GMT +3) (18 km SSW)2.2 quake Aegean Sea, 55 km south of Kos, Dodecanese, South Aegean, Greece, 14 Aug 2021 12:31 pm (GMT +3) (19 km SSW)All earthquakes at Nisyros

Paco volcano (Mindanao): magnitude 3.6 earthquake

A magnitude 3.6 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 17 km distance S from the volcano.
Earthquake details:
3.6 quake Province of Agusan del Norte, 39 km south of Surigao City, Philippines, 14 Aug 2021 4:17 pm (GMT +8) (17 km S)All earthquakes at Paco

Tenerife volcano (Canary Islands): 2 earthquakes up to magnitude 3.0

2 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 1 hour 12 minutes ago. Hypocenter depths ranged between 14.0 and 10.0 km.
Earthquake details:
Unconfirmed quake or seismic-like event reported: Near Arona, Canary Islands, Spain, 14 Aug 2021 10:30 am (GMT +1) (17 km W)1.2 quake Spain: NE GUÍA DE ISORA.ITF 14 Aug 2021 11:37 pm (GMT +1) (4 km WSW)All earthquakes at Tenerife

Tenorio volcano (Costa Rica): magnitude 3.8 earthquake

A magnitude 3.8 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.0 km depth at 2 km distance NNW from the volcano.
Earthquake details:
3.8 quake Upala, Provincia de Alajuela, 46 km east of Liberia, Costa Rica, 14 Aug 2021 3:47 pm (GMT -6) (2 km NNW)All earthquakes at Tenorio

Tjörnes Fracture Zone volcano (Iceland): 14 earthquakes up to magnitude 1.6

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 15 minutes ago. Hypocenter depths ranged between 12.3 and 4.5 km.
Earthquake details: (only 5 largest)
1.6 quake Iceland: 14.0 Km WSW of Kópasker 14 Aug 2021 2:10 pm (GMT +0) (17 km ESE)1.3 quake Iceland: 18.1 Km W of Kópasker 14 Aug 2021 6:12 am (GMT +0) (11 km E)1.2 quake Iceland: 17.9 Km W of Kópasker 14 Aug 2021 11:35 pm (GMT +0) (11 km E)0.9 quake Iceland: 14.1 Km W of Kópasker 14 Aug 2021 5:57 am (GMT +0) (14 km E)0.9 quake Iceland: 14.5 Km WSW of Kópasker 14 Aug 2021 2:31 am (GMT +0) (15 km ESE)All earthquakes at Tjörnes Fracture Zone

Unnamed volcano (North of Luzon): 2 earthquakes up to magnitude 3.9

2 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 9.0 and 7.0 km.
Earthquake details:
3.9 quake 23 km southwest of Basco, Batanes, Cagayan Valley, Philippines, 14 Aug 2021 11:19 pm (GMT +8) (4 km E)3.2 quake South China Sea, 34 km west of Basco, Batanes, Cagayan Valley, Philippines, 14 Aug 2021 6:53 pm (GMT +8) (19 km NW)All earthquakes at Unnamed
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