Volcano earthquake report for Wednesday, 21 Apr 2021

Wed, 21 Apr 2021, 23:50
23:50 PM | BY: EARTHQUAKEMONITOR
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius  during the past 24 hours on 21 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 21 Apr 2021 Number in brackets indicate nr of quakes.
Quakes detected near: Banua Wuhu (1 quake mag 3.4), Bardarbunga (5 quakes between mag 0.7-1.6), Clear Lake (23 quakes between mag 0.1-1.2), Coso (10 quakes between mag 0.5-1.9), Eyafjallajökull (1 quake mag 1.0), Fagradalsfjall (35 quakes between mag 0.2-2.1)
Gunung Semuning (Ranau caldera) (1 quake mag 2.5), Hrómundartindur (4 quakes between mag 0.1-1.4), Izu-Tobu (5 quakes between mag 2.7-3.7), Katmai (1 quake mag 1.1), Kilauea (1 quake mag 2.1), Krísuvík (8 quakes between mag 0.1-1.8), Las Pilas (1 quake mag 2.0), Liamuiga (1 quake mag 3.0), Maroa (1 quake mag 2.3), Maunaloa (4 quakes between mag 0.9-2.4), Methana (1 quake mag 1.5), Nisyros (21 quakes between mag 1.5-3.9), Oshima (1 quake mag 2.5), Reykjanes (26 quakes between mag 0.1-2.8), Sabancaya (1 quake mag 3.7), Tatun Group (1 quake mag 3.0), Tjörnes Fracture Zone (4 quakes between mag 0.9-1.3), Toba (1 quake mag 2.1), Torfajökull (2 quakes between mag 1.0-2.2), Tungnafellsjökull (3 quakes between mag 0.7-1.4) (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:




Banua Wuhu volcano (Sulawesi & Sangihe Islands): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 14 km distance NNW from the volcano.
Earthquake details:
3.4 quake Mindanao Sea, 209 km north of Manado, North Sulawesi, Indonesia, 21 April 2021 20:03 GMT (14 km NNW)
All earthquakes at Banua Wuhu

Clear Lake volcano (California): 23 earthquakes up to magnitude 1.2

Possible earthquake swarm: 23 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 39 minutes ago. Hypocenter depths ranged between 4.3 and 0.9 km.
Earthquake details: (only 5 largest)
1.2 quake 8km NW of The Geysers, CA, USA, 21 April 2021 05:03 GMT (16 km SSW)
1.2 quake 7km NW of The Geysers, CA, USA, 21 April 2021 04:40 GMT (16 km S)
1.1 quake 8km WNW of Cobb, CA, USA, 21 April 2021 08:02 GMT (14 km SSW)
1.0 quake 8km NW of The Geysers, CA, USA, 21 April 2021 10:05 GMT (16 km SSW)
0.9 quake 7km NW of The Geysers, CA, USA, 21 April 2021 23:09 GMT (17 km SSW)
All earthquakes at Clear Lake

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 35 earthquakes up to magnitude 2.1

Possible earthquake swarm: 35 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 6.5 and 0.0 km.
Earthquake details: (only 5 largest)
2.1 quake 5.7 Km NNE of Grindavík, Iceland, 21 April 2021 13:30 GMT (6 km WSW)
1.9 quake 5.3 Km NNE of Grindavík, Iceland, 21 April 2021 01:10 GMT (6 km WSW)
1.7 quake 5.0 Km NNE of Grindavík, Iceland, 21 April 2021 09:22 GMT (6 km WSW)
1.5 quake 5.8 Km WSW of Fagradalsfjall, Iceland, 21 April 2021 17:46 GMT (6 km W)
1.2 quake 5.1 Km NNE of Grindavík, Iceland, 21 April 2021 00:30 GMT (6 km WSW)
All earthquakes at Fagradalsfjall

Gunung Semuning (Ranau caldera) volcano (Sumatra): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 3 km distance SW from the volcano.
Earthquake details:
2.5 quake Lampung, 93 km south of Baturaja, South Sumatra, Indonesia, 21 April 2021 21:47 GMT (3 km SW)
All earthquakes at Gunung Semuning (Ranau caldera)

Izu-Tobu volcano (Honshu): 5 earthquakes up to magnitude 3.7

5 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 12.2 and 5.5 km.
Earthquake details:
3.7 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 21:29:50.07 (16 km SE)
3.1 quake North Pacific Ocean, 22 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 20:55:21.38 (16 km SE)
2.9 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 22:07:38.87 (16 km SE)
2.9 quake North Pacific Ocean, 22 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 20:46:50.41 (15 km SE)
2.7 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 23:20:08.20 (17 km SE)
All earthquakes at Izu-Tobu

Kilauea volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 12 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.5 km depth at 17 km distance WNW from the volcano.
Earthquake details:
2.1 quake 21 Km WNW of Volcano, Hawaii, USA, 21 April 2021 12:15 GMT (17 km WNW)
All earthquakes at Kilauea

Liamuiga volcano (Caribbean): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 14 km distance ESE from the volcano.
Earthquake details:
Unconfirmed quake reported: Near Basseterre, Saint George Basseterre, St. Kitts & Nevis, 21 April 2021 19:39 GMT (14 km ESE)
All earthquakes at Liamuiga

Maroa volcano (New Zealand): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.8 km depth at 16 km distance SSE from the volcano.
Earthquake details:
2.3 quake Rotorua District, Bay of Plenty, 17 km northeast of Taupo, Waikato, New Zealand, 21 April 2021 04:04 GMT (16 km SSE)
All earthquakes at Maroa

Maunaloa volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.4

4 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 8.0 and 0.2 km.
Earthquake details:
2.4 quake 41 mi southwest of Hilo, Hawaii County, USA, 21 April 2021 05:51 GMT (5 km SSW)
2.3 quake 28 Km ENE of Honaunau-Napoopoo, Hawaii, USA, 21 April 2021 20:54 GMT (9 km N)
1.1 quake 35 Km ENE of Honaunau-Napoopoo, Hawaii, USA, 21 April 2021 16:21 GMT (13 km NNE)
0.9 quake 22 Km E of Honaunau-Napoopoo, Hawaii, USA, 21 April 2021 12:42 GMT (5 km WNW)
All earthquakes at Maunaloa

Nisyros volcano (Greece): 21 earthquakes up to magnitude 3.9

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 37 minutes ago. Hypocenter depths ranged between 19.8 and 5.0 km.
Earthquake details: (only 5 largest)
3.9 quake Aegean Sea, 49 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 Apr 7:07 pm (GMT +3) (13 km S)
3.1 quake Aegean Sea, 53 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 April 2021 22:38 GMT (17 km S)
3.0 quake Aegean Sea, 59 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 April 2021 01:12 GMT (16 km SSW)
2.7 quake Aegean Sea, 52 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 April 2021 05:07 GMT (15 km S)
2.6 quake Aegean Sea, 52 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 April 2021 03:51 GMT (17 km S)
All earthquakes at Nisyros

Oshima volcano (Izu Islands): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.1 km depth at 17 km distance WNW from the volcano.
Earthquake details:
2.5 quake North Pacific Ocean, 24 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 23:28:04.68 (17 km WNW)
All earthquakes at Oshima

Reykjanes volcano (Reykjanes Peninsula, Iceland): 26 earthquakes up to magnitude 2.8

Possible earthquake swarm: 26 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 13.3 and 2.3 km.
Earthquake details: (only 5 largest)
2.8 quake 3.9 Km N of Grindavík, Iceland, 21 April 2021 05:38 GMT (4 km ESE)
2.8 quake 4.3 Km NNE of Grindavík, Iceland, 21 April 2021 14:27 GMT (6 km ESE)
2.6 quake 4.3 Km NNE of Grindavík, Iceland, 21 April 2021 13:13 GMT (6 km ESE)
2.2 quake 4.7 Km NNE of Grindavík, Iceland, 21 April 2021 13:32 GMT (6 km ESE)
2.1 quake 4.2 Km NNE of Grindavík, Iceland, 21 April 2021 13:36 GMT (6 km ESE)
All earthquakes at Reykjanes

Sabancaya volcano (Peru): magnitude 3.7 earthquake

A magnitude 3.7 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.0 km depth at 15 km distance NNE from the volcano.
Earthquake details:
3.7 quake Provincia de Caylloma, 88 km north of Arequipa, Peru, 21 April 2021 13:19 GMT (15 km NNE)
All earthquakes at Sabancaya

Tatun Group volcano (Taiwan): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 15 km distance S from the volcano.
Earthquake details:
Unconfirmed quake reported: Near Taipei, Taiwan, Taiwan, 21 April 2021 10:57 GMT (15 km S)
All earthquakes at Tatun Group

Toba volcano (Sumatra): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 10 km distance NNE from the volcano.
Earthquake details:
2.1 quake 64 km south of Pematangsiantar, North Sumatra, Indonesia, 21 April 2021 08:06 GMT (10 km NNE)
All earthquakes at Toba

Torfajökull volcano (Iceland): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 52 seconds, the last being recorded quake 1 hour 39 minutes ago. Hypocenter depths ranged between 5.0 and 1.1 km.
Earthquake details:
2.2 quake 9.8 Km NNW of Álftavatn, Iceland, 21 April 2021 22:09 GMT (6 km WNW)
1.0 quake 9.5 Km NNW of Álftavatn, Iceland, 21 April 2021 22:10 GMT (5 km W)
All earthquakes at Torfajökull

Previous news

Tue, 20 Apr 2021, 23:50
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) ... Read all
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