Volcano earthquake report for Sunday, 19 Sep 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 19 Sep 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Arenal (1 quake mag 3.0), Askja (6 quakes between mag 0.2-1.1), Clear Lake (16 quakes between mag 0.4-1.4), Coso (4 quakes between mag 0.5-2.3), Eldey (1 quake mag 1.6), Grímsvötn (2 quakes between mag 1.0-1.0)
Hekla (3 quakes between mag 0.8-1.4), Herdubreid (8 quakes between mag 0.3-1.0), Hrómundartindur (4 quakes between mag 0.7-1.3), Kolumbo (2 quakes between mag 2.6-2.9), La Palma (170 quakes between mag 1.0-3.8), Long Valley (2 quakes between mag 0.4-1.2), Maunaloa (1 quake mag 2.0), Mono Lake (1 quake mag 1.3), Moyuta (1 quake mag 3.0), Nisyros (14 quakes between mag 1.4-1.9), Reykjanes (16 quakes between mag 0.1-1.5), Sabancaya (3 quakes between mag 3.5-3.8), Süphan Dağ (1 quake mag 2.0), Timber Mountain (1 quake mag 1.6), Tjörnes Fracture Zone (2 quakes between mag 0.9-1.4), Washiba-Kumonotaira (8 quakes between mag 2.5-3.5), Yake-dake (7 quakes between mag 2.7-5.0) (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:


Arenal volcano (Costa Rica): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 8 km distance ENE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 28 km northwest of Ciudad Quesada, San Carlos, Provincia de Alajuela, Costa Rica, Sep 18, 2021 7:26 pm (GMT -6) (8 km ENE)All earthquakes at Arenal

Clear Lake volcano (California): 16 earthquakes up to magnitude 1.4

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 43 minutes ago. Hypocenter depths ranged between 6.9 and 1.0 km.
Earthquake details: (only 5 largest)
1.4 quake 6km W of Cobb, CA, Sep 18, 2021 7:29 pm (GMT -7) (16 km S)1.2 quake 8km WNW of Cobb, CA, Sep 19, 2021 4:06 pm (GMT -7) (15 km SSW)1.2 quake 13km ENE of Cloverdale, CA, Sep 19, 2021 12:23 pm (GMT -7) (17 km SSW)1.2 quake 4km W of Cobb, CA, Sep 18, 2021 8:34 pm (GMT -7) (17 km S)1.1 quake 9km WNW of The Geysers, CA, Sep 18, 2021 6:50 pm (GMT -7) (18 km SSW)All earthquakes at Clear Lake

Coso volcano (California): 4 earthquakes up to magnitude 2.3

4 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 5.8 and 2.6 km.
Earthquake details:
2.3 quake 17km ESE of Little Lake, CA, Sep 19, 2021 2:58 am (GMT -7) (17 km SSE)1.3 quake 20km E of Little Lake, CA, Sep 18, 2021 8:50 pm (GMT -7) (16 km SE)1.0 quake 5km N of Little Lake, CA, Sep 18, 2021 9:23 pm (GMT -7) (8 km SW)0.5 quake 16km SE of Olancha, CA, Sep 19, 2021 7:35 am (GMT -7) (18 km NNW)All earthquakes at Coso

Kolumbo volcano (Greece): 2 earthquakes up to magnitude 2.9

2 earthquakes occurred near (under) the volcano during 88 seconds, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 10.8 and 8.2 km.
Earthquake details:
2.9 quake Aegean Sea, 17 km northeast of Oia, Kykladene, South Aegean, Greece, Sep 19, 2021 10:45 pm (GMT +3) (5 km NE)2.6 quake Aegean Sea, 17 km northeast of Oia, Kykladene, South Aegean, Greece, Sep 19, 2021 10:44 pm (GMT +3) (5 km NE)All earthquakes at Kolumbo

La Palma volcano (Canary Islands): 170 earthquakes up to magnitude 3.8

Possible earthquake swarm: 170 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 15.0 and 0.0 km.
Earthquake details: (only 5 largest)
3.8 quake La Palma Island, Canary Islands, Sep 19, 2021 11:16 am (GMT +1) (5 km NW)3.3 quake 6 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 19, 2021 7:28 am (GMT +1) (5 km NW)3.2 quake 7.1 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 19, 2021 10:52 am (GMT +1) (5 km NW)3.2 quake 6.8 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 19, 2021 8:12 am (GMT +1) (5 km NW)3.1 quake 7.4 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 19, 2021 12:09 pm (GMT +1) (5 km NW)All earthquakes at La Palma

Moyuta volcano (Guatemala): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.0 km depth at 9 km distance ENE from the volcano.
Earthquake details:
3.0 quake 30 km southwest of Jutiapa, Guatemala, Sep 18, 2021 7:46 pm (GMT -6) (9 km ENE)All earthquakes at Moyuta

Nisyros volcano (Greece): 14 earthquakes up to magnitude 1.9

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 12.7 and 1.1 km.
Earthquake details: (only 5 largest)
1.9 quake Aegean Sea, 50 km south of Kos, Dodecanese, South Aegean, Greece, Sep 19, 2021 8:55 am (GMT +3) (13 km SSW)1.7 quake Aegean Sea, 92 km west of Rhodos, Dodecanese, South Aegean, Greece, Sep 19, 2021 5:03 pm (GMT +3) (16 km S)1.7 quake Aegean Sea, 91 km west of Rhodos, Dodecanese, South Aegean, Greece, Sep 19, 2021 5:14 pm (GMT +3) (16 km SSE)1.7 quake Aegean Sea, 93 km west of Rhodos, Dodecanese, South Aegean, Greece, Sep 19, 2021 1:57 pm (GMT +3) (16 km S)1.7 quake Aegean Sea, 48 km south of Kos, Dodecanese, South Aegean, Greece, Sep 19, 2021 10:08 am (GMT +3) (12 km S)All earthquakes at Nisyros

Reykjanes volcano (Reykjanes Peninsula, Iceland): 16 earthquakes up to magnitude 1.5

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 6.2 and 2.9 km.
Earthquake details: (only 5 largest)
1.5 quake Iceland: 7.2 Km NNE of Reykjanestá Sep 19, 2021 4:49 am (GMT +0) (7 km SW)1.4 quake Iceland: 6.5 Km NE of Reykjanestá Sep 19, 2021 11:47 am (GMT +0) (7 km SW)1.2 quake Iceland: 4.7 Km N of Reykjanestá Sep 19, 2021 5:42 am (GMT +0) (10 km SW)1.1 quake Iceland: 7.2 Km NNE of Reykjanestá Sep 19, 2021 4:49 am (GMT +0) (7 km SW)0.9 quake Iceland: 6.6 Km NE of Reykjanestá Sep 19, 2021 11:47 am (GMT +0) (7 km SW)All earthquakes at Reykjanes

Sabancaya volcano (Peru): 3 earthquakes up to magnitude 3.8

3 earthquakes occurred near (under) the volcano during 1 hour 6 minutes, the last being recorded quake 20 hours ago. Hypocenter depths ranged between 16.0 and 10.0 km.
Earthquake details:
3.8 quake Provincia de Caylloma, 77 km north of Arequipa, Peru, Sep 18, 2021 10:51 pm (GMT -5) (7 km ENE)3.6 quake Provincia de Caylloma, 80 km north of Arequipa, Peru, Sep 18, 2021 10:59 pm (GMT -5) (8 km NE)3.5 quake Provincia de Caylloma, 80 km north of Arequipa, Peru, Sep 18, 2021 9:53 pm (GMT -5) (8 km NE)All earthquakes at Sabancaya

Washiba-Kumonotaira volcano (Honshu): 8 earthquakes up to magnitude 3.5

8 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 3.8 and 1.9 km.
Earthquake details: (only 5 largest)
3.5 quake Takayama Shi, Gifu, 33 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 7:30 pm (GMT +9) (7 km SSE)3.4 quake Takayama Shi, Gifu, 34 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 5:26 pm (GMT +9) (8 km SSE)2.8 quake Takayama Shi, Gifu, 23 km west of Hotaka, Azumino-Shi, Nagano, Japan, Sep 19, 2021 5:35 pm (GMT +9) (8 km SSE)2.7 quake Takayama Shi, Gifu, 23 km west of Hotaka, Azumino-Shi, Nagano, Japan, Sep 19, 2021 5:44 pm (GMT +9) (8 km SSE)2.6 quake Takayama Shi, Gifu, 24 km west of Hotaka, Azumino-Shi, Nagano, Japan, Sep 19, 2021 7:59 pm (GMT +9) (9 km SSE)All earthquakes at Washiba-Kumonotaira

Yake-dake volcano (Honshu): 7 earthquakes up to magnitude 5.0

7 earthquakes occurred near (under) the volcano during 1 hour 50 minutes, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 4.3 and 2.0 km.
Earthquake details: (only 5 largest)
5.0 quake Takayama Shi, Gifu, 25 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 5:18 pm (GMT +9) (9 km ENE)4.1 quake Takayama Shi, Gifu, 32 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 7:04 pm (GMT +9) (7 km NNE)4.0 quake Takayama Shi, Gifu, 32 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 6:59 pm (GMT +9) (9 km NNE)3.4 quake Takayama Shi, Gifu, 32 km west of Matsumoto, Nagano, Japan, Sep 19, 2021 7:08 pm (GMT +9) (9 km NNE)2.8 quake Takayama Shi, Gifu, 23 km west of Hotaka, Azumino-Shi, Nagano, Japan, Sep 19, 2021 7:01 pm (GMT +9) (9 km NNE)All earthquakes at Yake-dake
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/141788/Volcano-earthquake-report-for-Sunday-19-Sep-2021.html