Volcano earthquake report for Saturday, 20 Feb 2021

Quakes detected near: Bardarbunga (2 quakes between mag 0.6-1.2), Clear Lake (19 quakes between mag 0.1-1.1), Coso (2 quakes between mag 1.1-1.9), Etna (3 quakes between mag 1.1-1.3), Hekla (3 quakes between mag 0.8-2.4), Hengill (83 quakes between mag 0.1-1.9)
Kilauea (5 quakes between mag 1.0-2.0), Krísuvík (7 quakes between mag 0.2-1.1), Mauna Kea (1 quake mag 1.5), Mauna Loa (14 quakes between mag 0.5-2.0), Momotombo (1 quake mag 1.9), Ngauruhoe (1 quake mag 1.2), Okataina (Tarawera) (2 quakes between mag 1.7-2.0), Oshima-Oshima (1 quake mag 2.7), Prestahnukur (1 quake mag 1.6), Pululahua (1 quake mag 2.9), Reykjanes (12 quakes between mag 0.2-1.5), Sousaki (1 quake mag 1.4), Tarakan (1 quake mag 3.8), Vesuvius (3 quakes between mag 0.1-1.1) (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): 19 earthquakes up to magnitude 1.1

Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 21 minutes ago. Hypocenter depths ranged between 3.0 and 0.1 km.
Earthquake details: (only 5 largest)
1.1 quake 6km NW of The Geysers, CA, USA, 20 Feb 2021 3:29 pm (GMT -8) (18 km SSW)
1.0 quake 6km NW of The Geysers, CA, USA, 19 Feb 2021 6:55 pm (GMT -8) (17 km S)
1.0 quake 6km NW of The Geysers, CA, USA, 20 Feb 2021 12:49 pm (GMT -8) (17 km S)
1.0 quake 3km W of Cobb, CA, USA, 20 Feb 2021 10:35 am (GMT -8) (17 km S)
1.0 quake 6km NNW of The Geysers, CA, USA, 20 Feb 2021 8:04 am (GMT -8) (16 km S)
All earthquakes at Clear Lake

Hekla volcano (Iceland): 3 earthquakes up to magnitude 2.4

3 earthquakes occurred near (under) the volcano during 5 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 7.2 and 6.7 km.
Earthquake details:
2.4 quake 14.6 Km SE of Árnes, Iceland, 20 Feb 2021 2:28 pm (GMT +0) (16 km W)
1.1 quake 14.1 Km ESE of Árnes, Iceland, 20 Feb 2021 5:58 pm (GMT +0) (16 km W)
0.8 quake 14.3 Km ESE of Árnes, Iceland, 20 Feb 2021 7:47 pm (GMT +0) (16 km W)
All earthquakes at Hekla

Hengill volcano (Iceland): 83 earthquakes up to magnitude 1.9

Possible earthquake swarm: 83 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 8.8 and 1.6 km.
Earthquake details: (only 5 largest)
1.9 quake 2.3 Km ESE of Eiturhóll, Iceland, 19 Feb 2021 11:51 pm (GMT +0) (6 km SSW)
1.5 quake 0.7 Km ESE of Eiturhóll, Iceland, 20 Feb 2021 4:06 am (GMT +0) (7 km SSW)
1.4 quake 2.4 Km ESE of Eiturhóll, Iceland, 20 February 2021 01:54 GMT (7 km SSW)
1.3 quake 2.3 Km ESE of Eiturhóll, Iceland, 20 February 2021 04:53 GMT (6 km SSW)
1.3 quake 2.2 Km ESE of Eiturhóll, Iceland, 20 February 2021 03:00 GMT (7 km SSW)
All earthquakes at Hengill

Mauna Loa volcano (Hawai'i (Big Island)): 14 earthquakes up to magnitude 2.0

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 2.2 and 0.1 km.
Earthquake details: (only 5 largest)
2.0 quake 27 Km E of Honaunau-Napoopoo, Hawaii, USA, 20 Feb 2021 1:10 am (GMT -10) (1 km ENE)
1.9 quake 27 Km E of Honaunau-Napoopoo, Hawaii, USA, 19 Feb 2021 8:16 pm (GMT -10) (2 km S)
1.8 quake 27 Km E of Honaunau-Napoopoo, Hawaii, USA, 19 Feb 2021 11:49 pm (GMT -10) (1 km E)
1.8 quake 28 Km E of Honaunau-Napoopoo, Hawaii, USA, 19 Feb 2021 9:06 pm (GMT -10) (4 km SSE)
1.7 quake 17 Km N of Pāhala, Hawaii, USA, 20 Feb 2021 4:44 am (GMT -10) (18 km SE)
All earthquakes at Mauna Loa

Oshima-Oshima volcano (Hokkaido): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.2 km depth at 4 km distance SE from the volcano.
Earthquake details:
2.7 quake Japan Sea, 76 km south of Okushiri Island, Hokkaido, Japan, 20 Feb 2021 2:31 pm (GMT +9) (4 km SE)
All earthquakes at Oshima-Oshima

Pululahua volcano (Ecuador): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.0 km depth at 9 km distance SSE from the volcano.
Earthquake details:
2.9 quake 23 km northeast of San Francisco de Quito, Ecuador, 19 Feb 2021 8:31 pm (GMT -5) (9 km SSE)
All earthquakes at Pululahua
Pululahua (also spelled as Pululgua) volcano is a low forested stratovolcano located immediately north of the equator, 15 km north of the capital Quito.

Reykjanes volcano (Iceland): 12 earthquakes up to magnitude 1.5

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 7.0 and 0.0 km.
Earthquake details: (only 5 largest)
1.5 quake 2.6 Km WSW of Fagradalsfjall, Iceland, 20 Feb 2021 6:54 am (GMT +0) (10 km E)
1.4 quake 4.2 Km SSW of Fagradalsfjall, Iceland, 20 February 2021 02:37 GMT (11 km ESE)
0.9 quake 3.5 Km WSW of Fagradalsfjall, Iceland, 20 February 2021 00:34 GMT (9 km E)
0.8 quake 3.6 Km WSW of Fagradalsfjall, Iceland, 20 February 2021 08:51 GMT (9 km E)
0.8 quake 5.3 Km WSW of Fagradalsfjall, Iceland, 20 February 2021 06:11 GMT (7 km E)
All earthquakes at Reykjanes

Tarakan volcano (Halmahera): magnitude 3.8 earthquake

A magnitude 3.8 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance NE from the volcano.
Earthquake details:
3.8 quake Halmahera Sea, 24 km north of Tobelo, Indonesia, 20 Feb 2021 5:42 pm (GMT +9) (16 km NE)
All earthquakes at Tarakan