Volcano earthquake report for Tuesday, 20 Apr 2021

mar., 20 avril 2021, 23:50
23:50 PM | AUTEUR : EARTHQUAKEMONITOR
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius  during the past 24 hours on 20 Apr 2021 Number in brackets indicate nr of quakes.
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 20 Apr 2021 Number in brackets indicate nr of quakes.
Quakes detected near: Akuseki-jima (1 quake mag 4.0), Brennisteinsfjöll (4 quakes between mag 0.2-1.1), Cerro Negro (1 quake mag 1.7), Clear Lake (34 quakes between mag 0.2-2.5), Coso (12 quakes between mag 0.2-1.0), Fagradalsfjall (26 quakes between mag 0.1-4.1)
Fourpeaked (1 quake mag 1.4), Grímsvötn (1 quake mag 1.1), Hengill (27 quakes between mag 0.2-1.7), Hrómundartindur (4 quakes between mag 0.2-1.3), Kilauea (8 quakes between mag 0.6-2.1), Kolumbo (3 quakes between mag 1.6-4.0), Krísuvík (18 quakes between mag 0.1-1.9), La Palma (2 quakes between mag 1.6-1.7), Long Valley (6 quakes between mag 0.3-2.8), Martin (1 quake mag 1.7), Momotombo (2 quakes between mag 1.6-2.2), Nisyros (25 quakes between mag 1.7-4.4), Norikura (1 quake mag 2.5), Olot Field (1 quake mag 1.0), Reykjanes (15 quakes between mag 0.2-2.6), Salton Buttes (2 quakes between mag 1.6-1.8), San Pablo (1 quake mag 3.0), Santorini (1 quake mag 2.2), Tjörnes Fracture Zone (4 quakes between mag 0.5-1.1), Torfajökull (2 quakes between mag 0.9-1.6) (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:




Akuseki-jima volcano (Ryukyu Islands): magnitude 4.0 earthquake

A magnitude 4.0 earthquake occurred at the volcano 1 hour 5 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 12.4 km depth at 16 km distance SSW from the volcano.
Earthquake details:
4.0 quake East China Sea, 108 km north of Naze, Amami Shi, Kagoshima, Japan, Apr 21, 2021 07:45:23.74 (16 km SSW)
All earthquakes at Akuseki-jima

Clear Lake volcano (California): 34 earthquakes up to magnitude 2.5

Possible earthquake swarm: 34 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 21 minutes ago. Hypocenter depths ranged between 4.1 and 0.0 km.
Earthquake details: (only 5 largest)
2.5 quake 7km W of Cobb, CA, USA, 20 April 2021 21:40 GMT (16 km S)
1.9 quake 7km W of Cobb, CA, USA, 20 April 2021 18:41 GMT (16 km SSW)
1.8 quake 7km NW of The Geysers, CA, USA, 20 April 2021 23:29 GMT (18 km SSW)
1.4 quake 3km SSW of Cobb, CA, USA, 20 April 2021 03:34 GMT (19 km S)
1.3 quake 6km NW of The Geysers, CA, USA, 20 April 2021 12:59 GMT (18 km SSW)
All earthquakes at Clear Lake

Coso volcano (California): 12 earthquakes up to magnitude 1.0

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 1 hour 25 minutes ago. Hypocenter depths ranged between 7.7 and 1.1 km.
Earthquake details: (only 5 largest)
1.0 quake 13km NE of Coso Junction, CA, USA, 20 April 2021 22:24 GMT (12 km N)
0.9 quake 14km NE of Coso Junction, CA, USA, 20 April 2021 08:06 GMT (14 km NNW)
0.7 quake 15km E of Coso Junction, CA, USA, 20 April 2021 06:43 GMT (4 km E)
0.6 quake 15km E of Coso Junction, CA, USA, 20 April 2021 13:45 GMT (4 km E)
0.6 quake 15km E of Coso Junction, CA, USA, 20 April 2021 09:59 GMT (4 km E)
All earthquakes at Coso

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 26 earthquakes up to magnitude 4.1

Possible earthquake swarm: 26 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 36 minutes ago. Hypocenter depths ranged between 6.7 and 0.1 km.
Earthquake details: (only 5 largest)
4.1 quake 5.3 Km NE of Grindavík, Iceland, 20 Apr 11:05 pm (GMT +0) (5 km WSW)
2.1 quake 5.1 Km NNE of Grindavík, Iceland, 20 April 2021 00:08 GMT (6 km WSW)
1.2 quake 5.2 Km NE of Grindavík, Iceland, 20 April 2021 23:11 GMT (6 km WSW)
1.1 quake 5.3 Km NNE of Grindavík, Iceland, 20 April 2021 00:54 GMT (6 km WSW)
1.1 quake 4.1 Km SSW of Fagradalsfjall, Iceland, 20 April 2021 00:20 GMT (3 km SSW)
All earthquakes at Fagradalsfjall

Hengill volcano (Iceland): 27 earthquakes up to magnitude 1.7

Possible earthquake swarm: 27 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 5.5 and 0.8 km.
Earthquake details: (only 5 largest)
1.7 quake 1.3 Km ESE of Eiturhóll, Iceland, 20 April 2021 04:27 GMT (7 km SSW)
1.6 quake 1.2 Km E of Eiturhóll, Iceland, 20 April 2021 11:30 GMT (7 km SSW)
1.4 quake 1.3 Km E of Eiturhóll, Iceland, 20 April 2021 06:18 GMT (7 km SSW)
1.2 quake 1.6 Km ESE of Eiturhóll, Iceland, 20 April 2021 10:08 GMT (7 km SSW)
1.1 quake 1.1 Km ESE of Eiturhóll, Iceland, 20 April 2021 11:30 GMT (7 km SSW)
All earthquakes at Hengill

Kilauea volcano (Hawai'i (Big Island)): 8 earthquakes up to magnitude 2.1

8 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 7.5 and 0.9 km.
Earthquake details: (only 5 largest)
2.1 quake 5 Km SW of Volcano, Hawaii, USA, 20 April 2021 09:29 GMT (2 km E)
2.0 quake 5 Km SW of Volcano, Hawaii, USA, 20 April 2021 13:40 GMT (2 km ESE)
2.0 quake 3 Km SW of Volcano, Hawaii, USA, 20 April 2021 12:58 GMT (4 km ENE)
1.9 quake 5 Km SSE of Volcano, Hawaii, USA, 20 April 2021 14:29 GMT (7 km ESE)
1.8 quake 5 Km SW of Volcano, Hawaii, USA, 20 April 2021 14:02 GMT (2 km E)
All earthquakes at Kilauea

Kolumbo volcano (Greece): 3 earthquakes up to magnitude 4.0

3 earthquakes occurred near (under) the volcano during 2 hours, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 12.5 and 10.4 km.
Earthquake details:
4.0 quake Aegean Sea, 15 km northeast of Fira, Nomos Kykladon, South Aegean, Greece, 20 Apr 11:21 am (GMT +3) (1 km ENE)
3.4 quake Aegean Sea, 13 km northeast of Fira, Nomos Kykladon, South Aegean, Greece, 20 April 2021 10:46 GMT (2 km E)
1.6 quake Aegean Sea, 14 km northeast of Fira, Nomos Kykladon, South Aegean, Greece, 20 April 2021 08:41 GMT (2 km NNE)
All earthquakes at Kolumbo

Krísuvík volcano (Reykjanes Peninsula, Iceland): 18 earthquakes up to magnitude 1.9

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 41 minutes ago. Hypocenter depths ranged between 6.1 and 2.6 km.
Earthquake details: (only 5 largest)
1.9 quake 3.0 Km NNE of Krýsuvík, Iceland, 20 April 2021 07:40 GMT (4 km SE)
1.4 quake 1.9 Km SSW of Keilir, Iceland, 20 April 2021 05:13 GMT (4 km W)
1.2 quake 1.9 Km SSW of Keilir, Iceland, 20 April 2021 08:41 GMT (4 km W)
1.0 quake 5.8 Km NE of Krýsuvík, Iceland, 20 April 2021 05:58 GMT (6 km E)
0.9 quake 2.0 Km SSW of Keilir, Iceland, 20 April 2021 03:32 GMT (4 km W)
All earthquakes at Krísuvík

Long Valley volcano (California): 6 earthquakes up to magnitude 2.8

6 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 15 hours ago. Hypocenter depths ranged between 10.9 and 5.0 km.
Earthquake details: (only 5 largest)
2.8 quake 13 mi southeast of Mammoth Lakes, Mono County, California, USA, 20 April 2021 05:07 GMT (19 km SSE)
1.3 quake 9km WSW of Toms Place, CA, USA, 20 April 2021 06:23 GMT (19 km SSE)
1.0 quake 10km WSW of Toms Place, CA, USA, 20 April 2021 05:22 GMT (19 km SSE)
0.9 quake 9km WSW of Toms Place, CA, USA, 20 April 2021 05:49 GMT (19 km SSE)
0.5 quake 12km W of Toms Place, CA, USA, 20 April 2021 08:27 GMT (15 km SSE)
All earthquakes at Long Valley

Momotombo volcano (Nicaragua): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 18 hours ago. Hypocenter depths ranged between 13.0 and 10.0 km.
Earthquake details:
2.2 quake Departamento de Managua, 4.2 km northeast of Nagarote, Nicaragua, 2021-04-19 20:42:28 (14 km S)
1.6 quake Departamento de Leon, 52 km northwest of Managua, Nicaragua, 2021-04-19 23:21:56 (19 km NE)
All earthquakes at Momotombo

Nisyros volcano (Greece): 25 earthquakes up to magnitude 4.4

Possible earthquake swarm: 25 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 39 minutes ago. Hypocenter depths ranged between 18.9 and 1.0 km.
Earthquake details: (only 5 largest)
4.4 quake Aegean Sea, 51 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 Apr 2021 8:09 am (GMT +3) (16 km S)
3.6 quake Aegean Sea, 51 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 19:31 GMT (15 km S)
3.5 quake Aegean Sea, 57 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 21:12 GMT (17 km S)
3.3 quake Aegean Sea, 51 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 05:07 GMT (12 km S)
3.1 quake Aegean Sea, 53 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 04:13 GMT (16 km S)
All earthquakes at Nisyros

Norikura volcano (Honshu): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 24 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.8 km depth at 10 km distance E from the volcano.
Earthquake details:
2.5 quake 31 km southwest of Matsumoto, Nagano, Japan, Apr 20, 2021 09:19:27.16 (10 km E)
All earthquakes at Norikura

Reykjanes volcano (Reykjanes Peninsula, Iceland): 15 earthquakes up to magnitude 2.6

Possible earthquake swarm: 15 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 20 minutes ago. Hypocenter depths ranged between 6.8 and 3.6 km.
Earthquake details: (only 5 largest)
2.6 quake 4.7 Km NNE of Grindavík, Iceland, 20 April 2021 23:29 GMT (6 km ESE)
2.1 quake 5.0 Km NNE of Grindavík, Iceland, 20 April 2021 21:20 GMT (6 km ESE)
2.1 quake 2.7 Km NNE of Grindavík, Iceland, 20 April 2021 12:56 GMT (7 km SE)
1.5 quake 3.1 Km NW of Reykjanestá, Iceland, 20 April 2021 03:19 GMT (13 km SW)
1.4 quake 3.3 Km NW of Reykjanestá, Iceland, 20 April 2021 03:21 GMT (13 km SW)
All earthquakes at Reykjanes

San Pablo volcano (Luzon Island): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 11 km distance S from the volcano.
Earthquake details:
Unconfirmed quake reported: Near Calamba, Calabarzon, Philippines, 20 April 2021 03:25 GMT (11 km S)
All earthquakes at San Pablo

Santorini volcano (Greece): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 8 km distance NE from the volcano.
Earthquake details:
2.2 quake Aegean Sea, 7.6 km northeast of Fira, Nomos Kykladon, South Aegean, Greece, 20 April 2021 07:54 GMT (8 km NE)
All earthquakes at Santorini

Actualités précédentes

lun., 19 avril 2021, 23:50
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius  during the past 24 hours on 19 Apr 2021 Number in brackets indicate nr of quakes.
Quakes detected near: Akyarlar (1 quake mag 1.8), Bardarbunga (3 quakes between mag 0.2-2.0), Brennisteinsfjöll (7 quakes between mag 0.4-1.4), Clear Lake (43 quakes between mag 0.2-3.0), Coso (7 quakes between mag 0.4-1.3), Don Joao de Castro Bank (2 quakes between mag 2.5-2.9) ... Read all
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