Volcano earthquake report for Thursday, 21 Oct 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 21 Oct 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Askja (8 quakes between mag 0.3-1.0), Augustine (1 quake mag 1.2), Bazman (1 quake mag 4.9), Biliran (1 quake mag 2.2), Campi Flegrei (Phlegrean Fields) (9 quakes between mag 0.1-1.5), Clear Lake (23 quakes between mag 0.4-2.2)
Coso (8 quakes between mag 0.6-2.0), Eldey (1 quake mag 1.0), Fagradalsfjall (7 quakes between mag 0.2-1.0), Hekla (2 quakes between mag 0.7-1.0), Kaguyak (1 quake mag 1.1), Krísuvík (18 quakes between mag 0.1-3.6), La Palma (112 quakes between mag 2.4-3.7), Laacher See (1 quake mag 3.0), Long Valley (5 quakes between mag 0.3-1.3), Mahagnao (1 quake mag 2.5), Nisyros (1 quake mag 2.5), Reporoa (4 quakes between mag 1.2-2.1), Salton Buttes (3 quakes between mag 1.4-2.0), Sekincau Belirang (1 quake mag 3.1), Snowy Mountain (1 quake mag 1.8), Spurr (1 quake mag 1.4), Tjörnes Fracture Zone (3 quakes between mag 0.6-1.4), Vesuvius (4 quakes between mag 0.2-1.1), Vulcano (1 quake mag 1.0), Yellowstone (2 quakes between mag 1.0-1.5) (updated 12h50)

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:


Bazman volcano (Iran): magnitude 4.9 earthquake

A magnitude 4.9 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 8 km distance WSW from the volcano.
Earthquake details:
4.9 quake 146 km south of Bam, Kerman, Iran, Oct 21, 2021 9:35 am (GMT +3:30) (8 km WSW)All earthquakes at Bazman

Biliran volcano (Central Philippines): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 17 km distance S from the volcano.
Earthquake details:
2.2 quake Philippine Sea, 15 km northwest of Carigara, Leyte, Eastern Visayas, Philippines, Oct 21, 2021 1:15 am (GMT +8) (17 km S)All earthquakes at Biliran

Clear Lake volcano (California): 23 earthquakes up to magnitude 2.2

Possible earthquake swarm: 23 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 1 hour 19 minutes ago. Hypocenter depths ranged between 5.0 and 0.1 km.
Earthquake details: (only 5 largest)
2.2 quake 5km WNW of The Geysers, CA, Oct 20, 2021 9:56 pm (GMT -7) (19 km S)1.9 quake 5km W of Cobb, CA, Oct 20, 2021 10:13 pm (GMT -7) (17 km S)1.8 quake 8km W of Cobb, CA, Oct 21, 2021 3:35 am (GMT -7) (16 km SSW)1.5 quake 3km NNW of The Geysers, CA, Oct 20, 2021 7:22 pm (GMT -7) (19 km S)1.2 quake 8km W of Cobb, CA, Oct 21, 2021 3:38 am (GMT -7) (16 km SSW)All earthquakes at Clear Lake

Krísuvík volcano (Reykjanes Peninsula, Iceland): 18 earthquakes up to magnitude 3.6

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 5.7 and 3.3 km.
Earthquake details: (only 5 largest)
3.6 quake Iceland: 2.5 Km SSW of Keilir Oct 21, 2021 5:17 am (GMT +0) (5 km WSW)1.0 quake Iceland: 2.1 Km SSW of Keilir Oct 20, 2021 1:46 pm (GMT +0) (4 km W)0.9 quake Iceland: 2.2 Km SSW of Keilir Oct 21, 2021 5:17 am (GMT +0) (5 km W)0.9 quake Iceland: 2.2 Km S of Keilir Oct 21, 2021 2:40 am (GMT +0) (4 km WSW)0.8 quake Iceland: 1.8 Km SSW of Keilir Oct 20, 2021 1:39 pm (GMT +0) (4 km W)All earthquakes at Krísuvík

La Palma volcano (Canary Islands): 112 earthquakes up to magnitude 3.7

Possible earthquake swarm: 112 earthquakes occurred near (under) the volcano during 24 hours, the last being recorded quake 19 minutes ago. Hypocenter depths ranged between 15.0 and 9.0 km.
Earthquake details: (only 5 largest)
3.7 quake La Palma Island, Canary Islands, Spain, Oct 21, 2021 1:45 am (GMT +1) (2 km SSE)3.6 quake La Palma Island, Canary Islands, Spain, Oct 20, 2021 2:43 pm (GMT +1) (3 km ESE)3.5 quake La Palma Island, Canary Islands, Spain, Oct 20, 2021 9:39 pm (GMT +1) (2 km SSE)3.5 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Oct 21, 2021 10:48 am (GMT +1) (4 km SSE)3.4 quake La Palma Island, Canary Islands, Spain, Oct 21, 2021 6:32 am (GMT +1) (3 km S)All earthquakes at La Palma

Laacher See volcano (Germany): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 17 km distance E from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): Germany Oct 21, 2021 7:24 am (GMT +2) (17 km E)All earthquakes at Laacher See

Mahagnao volcano (Central Philippines): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 12 km distance ENE from the volcano.
Earthquake details:
2.5 quake Leyte Island, 20 km north of Abuyog, Leyte, Eastern Visayas, Philippines, Oct 20, 2021 11:22 pm (GMT +8) (12 km ENE)All earthquakes at Mahagnao

Nisyros volcano (Greece): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.5 km depth at 19 km distance SW from the volcano.
Earthquake details:
2.5 quake Aegean Sea, Greece, Oct 21, 2021 7:28 am (GMT +3) (19 km SW)All earthquakes at Nisyros

Reporoa volcano (New Zealand): 4 earthquakes up to magnitude 2.1

4 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 32 minutes ago. Hypocenter depths ranged between 5.4 and 2.9 km.
Earthquake details:
2.1 quake North Island, Bay of Plenty, New Zealand, Oct 21, 2021 3:22 pm (GMT +13) (19 km SW)1.6 quake North Island, 34 km south of Rotorua, Bay of Plenty, New Zealand, Oct 22, 2021 1:17 am (GMT +13) (2 km SSE)1.5 quake North Island, 35 km south of Rotorua, Bay of Plenty, New Zealand, Oct 21, 2021 9:30 pm (GMT +13) (3 km SSE)1.2 quake New Zealand Oct 21, 2021 9:27 pm (GMT +13) (3 km SSE)All earthquakes at Reporoa

Sekincau Belirang volcano (Sumatra): magnitude 3.1 earthquake

A magnitude 3.1 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 19 km distance WNW from the volcano.
Earthquake details:
3.1 quake 86 km west of Kotabumi, Lampung, Indonesia, Oct 21, 2021 11:38 am (GMT +7) (19 km WNW)All earthquakes at Sekincau Belirang
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