Quakes detected near: Askja (6 quakes between mag 0.5-1.3), Barva (1 quake mag 3.7), Clear Lake (20 quakes between mag 0.3-1.4), Eldey (1 quake mag 1.0), Etna (3 quakes between mag 1.6-3.0), Grímsvötn (2 quakes between mag 0.9-1.8)
Herdubreid (8 quakes between mag 0.6-1.1), Kaba (1 quake mag 2.7), Kilauea (4 quakes between mag 1.7-2.1), La Palma (19 quakes between mag 1.9-3.2), Long Valley (1 quake mag 1.5), Mammoth Mountain (1 quake mag 1.4), Mount Rainier (1 quake mag 1.0), Nisyros (9 quakes between mag 1.4-2.1), Nyiragongo (1 quake mag 3.8), Reykjanes (12 quakes between mag 0.1-1.4), Salton Buttes (2 quakes between mag 1.5-2.1), Washiba-Kumonotaira (1 quake mag 2.7), Öraefajökull (1 quake mag 1.2) (updated 20h50)
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:
Barva volcano (Costa Rica): magnitude 3.7 earthquake
A magnitude 3.7 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.0 km depth at 19 km distance ENE from the volcano.Earthquake details:
3.7 quake Pococi, Provincia de Limon, 31 km northeast of San Jose, San José, Costa Rica, Sep 21, 2021 8:40 am (GMT -6) (19 km ENE)All earthquakes at Barva
Clear Lake volcano (California): 20 earthquakes up to magnitude 1.4
Possible earthquake swarm: 20 earthquakes occurred near (under) the volcano during 24 hours, the last being recorded quake 15 minutes ago. Hypocenter depths ranged between 17.3 and 0.2 km.Earthquake details: (only 5 largest)
1.4 quake 8km W of Cobb, CA, Sep 21, 2021 10:27 am (GMT -7) (16 km SSW)1.3 quake 5km NNW of Cobb, CA, Sep 21, 2021 10:27 am (GMT -7) (12 km S)1.2 quake 7km NW of The Geysers, CA, Sep 20, 2021 1:50 pm (GMT -7) (16 km S)1.2 quake 9km WNW of Cobb, CA, Sep 20, 2021 5:36 pm (GMT -7) (15 km SSW)0.9 quake 3km NNW of The Geysers, CA, Sep 21, 2021 5:29 am (GMT -7) (19 km S)All earthquakes at Clear Lake
Etna volcano (Italy): 3 earthquakes up to magnitude 3.0
3 earthquakes occurred near (under) the volcano during 2 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 10.0 and 0.4 km.Earthquake details:
Reported seismic-like event (likely no quake): 30 km north of Catania, Sicily, Italy, Sep 21, 2021 3:59 pm (GMT +2) (0 km SW)1.6 quake 17 km northeast of Adrano, Catania, Sicily, Italy, Sep 21, 2021 6:21 pm (GMT +2) (0 km SSE)1.6 quake 17 km northeast of Adrano, Catania, Sicily, Italy, Sep 21, 2021 6:20 pm (GMT +2) (1 km SSE)All earthquakes at Etna
Kaba volcano (Sumatra): magnitude 2.7 earthquake
A magnitude 2.7 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 11 km distance W from the volcano.Earthquake details:
2.7 quake 8.5 km southwest of Curup, Bengkulu, Indonesia, Sep 21, 2021 4:39 am (GMT +7) (11 km W)All earthquakes at Kaba
Kilauea volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.1
4 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 3.9 and 0.1 km.Earthquake details:
2.1 quake 5 Km SW of Volcano, Hawaii, Sep 21, 2021 8:13 am (GMT -10) (2 km E)1.8 quake 16 Km W of Volcano, Hawaii, Sep 21, 2021 1:50 am (GMT -10) (11 km W)1.8 quake 12 Km SSE of Volcano, Hawaii, Sep 20, 2021 11:18 am (GMT -10) (13 km SE)1.7 quake 10 Km WSW of Volcano, Hawaii, Sep 20, 2021 1:34 pm (GMT -10) (5 km WNW)All earthquakes at Kilauea
La Palma volcano (Canary Islands): 19 earthquakes up to magnitude 3.2
Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 12.0 and 0.0 km.Earthquake details: (only 5 largest)
3.2 quake La Palma Island, 4 km southeast of Los Llanos de Aridane, Spain, Sep 21, 2021 6:06 am (GMT +1) (8 km NW)Reported seismic-like event (likely no quake): 7.4 km south of Santa Cruz de La Palma, Tenerife, Canary Islands, Spain, Sep 21, 2021 12:50 pm (GMT +1) (8 km ENE)Reported seismic-like event (likely no quake): 2.7 km west of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 21, 2021 4:48 pm (GMT +1) (13 km NW)3.0 quake La Palma Island, 4.9 km south of Los Llanos de Aridane, Spain, Sep 21, 2021 9:08 am (GMT +1) (7 km NW)2.9 quake La Palma Island, 8.4 km southeast of Los Llanos de Aridane, Spain, Sep 20, 2021 11:53 pm (GMT +1) (4 km NW)All earthquakes at La Palma
Nisyros volcano (Greece): 9 earthquakes up to magnitude 2.1
9 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 18.0 and 3.2 km.Earthquake details: (only 5 largest)
2.1 quake Aegean Sea, 47 km south of Kos, Dodecanese, South Aegean, Greece, Sep 21, 2021 10:39 am (GMT +3) (7 km SW)2.0 quake Aegean Sea, 95 km west of Rhodos, Dodecanese, South Aegean, Greece, Sep 21, 2021 3:51 pm (GMT +3) (18 km S)2.0 quake Aegean Sea, 44 km south of Kos, Dodecanese, South Aegean, Greece, Sep 21, 2021 10:22 am (GMT +3) (9 km SSE)2.0 quake Aegean Sea, 46 km south of Kos, Dodecanese, South Aegean, Greece, Sep 21, 2021 12:08 am (GMT +3) (12 km SSE)1.8 quake Aegean Sea, 49 km south of Kos, Dodecanese, South Aegean, Greece, Sep 21, 2021 4:24 am (GMT +3) (18 km SE)All earthquakes at Nisyros
Nyiragongo volcano (Democratic Republic of Congo (DRC)): magnitude 3.8 earthquake
A magnitude 3.8 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 19 km distance S from the volcano.Earthquake details:
Reported quake or seismic-like event: 2.5 km northwest of Gisenyi, Western Province, Rwanda, Sep 21, 2021 12:11 pm (GMT +2) (19 km S)All earthquakes at Nyiragongo
Reykjanes volcano (Reykjanes Peninsula, Iceland): 12 earthquakes up to magnitude 1.4
Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 5.8 and 0.5 km.Earthquake details: (only 5 largest)
1.4 quake Iceland: 6.8 Km NE of Reykjanestá Sep 21, 2021 9:51 am (GMT +0) (7 km SW)1.2 quake Iceland: 6.5 Km NNE of Reykjanestá Sep 21, 2021 3:24 am (GMT +0) (7 km SW)1.1 quake Iceland: 7.0 Km NNE of Reykjanestá Sep 21, 2021 9:50 am (GMT +0) (7 km SW)1.0 quake Iceland: 6.9 Km NE of Reykjanestá Sep 21, 2021 9:52 am (GMT +0) (7 km SW)1.0 quake Iceland: 6.8 Km NE of Reykjanestá Sep 21, 2021 9:51 am (GMT +0) (7 km SW)All earthquakes at Reykjanes
Salton Buttes volcano (California): 2 earthquakes up to magnitude 2.1
2 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 59 minutes ago. Hypocenter depths ranged between 9.9 and 9.3 km.Earthquake details:
2.1 quake 7km N of Westmorland, CA, Sep 21, 2021 12:50 pm (GMT -7) (11 km S)1.5 quake 8km W of Calipatria, CA, Sep 21, 2021 2:22 am (GMT -7) (9 km SSE)All earthquakes at Salton Buttes
Washiba-Kumonotaira volcano (Honshu): 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 3.4 km depth at 7 km distance SSE from the volcano.Earthquake details:
2.7 quake Takayama Shi, Gifu, 24 km west of Hotaka, Azumino-Shi, Nagano, Japan, Sep 21, 2021 11:43 am (GMT +9) (7 km SSE)All earthquakes at Washiba-Kumonotaira
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/141975/Volcano-earthquake-report-for-Tuesday-21-Sep-2021.html