Volcano earthquake report for Tuesday, 28 Sep 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 28 Sep 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Askja (5 quakes between mag 0.9-1.5), Clear Lake (21 quakes between mag 0.3-1.4), Coso (7 quakes between mag 0.6-1.3), Eldey (2 quakes between mag 1.1-1.2), Fagradalsfjall (7 quakes between mag 0.2-1.2), Grímsvötn (2 quakes between mag 1.1-1.5)
Hekla (3 quakes between mag 0.7-1.3), Herdubreid (8 quakes between mag 0.3-1.5), Iwaki (1 quake mag 2.5), Karadağ (1 quake mag 2.4), Kilauea (7 quakes between mag 1.7-2.3), Krísuvík (70 quakes between mag 0.1-2.5), La Palma (13 quakes between mag 2.4-3.3), Mahagnao (1 quake mag 2.0), Mammoth Mountain (1 quake mag 1.2), Mono Lake (7 quakes between mag 1.5-3.0), Ngauruhoe (1 quake mag 1.2), Nisyros (18 quakes between mag 1.7-3.2), Parker (4 quakes between mag 2.9-4.2), Pinatubo (1 quake mag 2.1), Ruapehu (4 quakes between mag 0.6-1.1), Salton Buttes (1 quake mag 1.6), Sibualbuali (2 quakes between mag 2.4-3.0), Takawangha (2 quakes between mag 0.2-1.1) (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:


Clear Lake volcano (California): 21 earthquakes up to magnitude 1.4

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 15 minutes ago. Hypocenter depths ranged between 7.2 and 0.9 km.
Earthquake details: (only 5 largest)
1.4 quake 7km NW of The Geysers, CA, Sep 28, 2021 7:54 am (GMT -7) (16 km S)1.2 quake 4km WNW of Cobb, CA, Sep 28, 2021 12:47 am (GMT -7) (15 km S)1.2 quake 7km NW of The Geysers, CA, Sep 28, 2021 1:53 am (GMT -7) (17 km S)1.2 quake 7km NW of The Geysers, CA, Sep 28, 2021 5:52 am (GMT -7) (16 km S)1.2 quake 6km NW of The Geysers, CA, Sep 28, 2021 7:33 am (GMT -7) (17 km S)All earthquakes at Clear Lake

Iwaki volcano (Honshu): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.4 km depth at 12 km distance NNE from the volcano.
Earthquake details:
2.5 quake Hirosaki Shi, 8.6 km southwest of Goshogawara, Aomori, Japan, Sep 28, 2021 10:02 am (GMT +9) (12 km NNE)All earthquakes at Iwaki

Karadağ volcano (Turkey): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.0 km depth at 12 km distance NNW from the volcano.
Earthquake details:
2.4 quake Konya, 36 km north of Karaman, Turkey, Sep 28, 2021 10:28 pm (GMT +3) (12 km NNW)All earthquakes at Karadağ

Kilauea volcano (Hawai'i (Big Island)): 7 earthquakes up to magnitude 2.3

7 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 2.3 and 0.4 km.
Earthquake details: (only 5 largest)
2.3 quake 9 Km SSE of Volcano, Hawaii, Sep 28, 2021 9:03 am (GMT -10) (12 km ESE)2.2 quake 6 Km S of Volcano, Hawaii, Sep 27, 2021 9:09 pm (GMT -10) (4 km ESE)1.8 quake 5 Km W of Volcano, Hawaii, Sep 28, 2021 12:05 am (GMT -10) (3 km N)1.8 quake 5 Km WSW of Volcano, Hawaii, Sep 27, 2021 11:40 pm (GMT -10) (2 km NNE)1.8 quake Island of Hawaii, Hawaii, Sep 27, 2021 4:56 pm (GMT -10) (11 km ESE)All earthquakes at Kilauea

Krísuvík volcano (Reykjanes Peninsula, Iceland): 70 earthquakes up to magnitude 2.5

Possible earthquake swarm: 70 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 44 minutes ago. Hypocenter depths ranged between 10.9 and 0.1 km.
Earthquake details: (only 5 largest)
2.5 quake Iceland: 0.9 Km SW of Keilir Sep 28, 2021 3:08 pm (GMT +0) (4 km W)2.5 quake Iceland: 0.8 Km SW of Keilir Sep 28, 2021 6:46 am (GMT +0) (4 km W)1.6 quake Iceland: 0.9 Km S of Keilir Sep 28, 2021 9:04 pm (GMT +0) (4 km W)1.6 quake Iceland: 0.9 Km SSW of Keilir Sep 28, 2021 5:19 am (GMT +0) (4 km W)1.4 quake Iceland: 1.4 Km SSW of Keilir Sep 28, 2021 8:05 am (GMT +0) (4 km W)All earthquakes at Krísuvík

La Palma volcano (Canary Islands): 13 earthquakes up to magnitude 3.3

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 1 hour 31 minutes ago. Hypocenter depths ranged between 15.0 and 2.0 km.
Earthquake details: (only 5 largest)
3.3 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Sep 28, 2021 11:19 pm (GMT +1) (2 km SSE)3.3 quake La Palma Island, 12 km southeast of Los Llanos de Aridane, Spain, Sep 28, 2021 6:15 pm (GMT +1) (3 km SSW)3.3 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Sep 28, 2021 5:23 pm (GMT +1) (3 km SSE)3.3 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Sep 28, 2021 4:51 pm (GMT +1) (2 km S)2.9 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Sep 28, 2021 12:42 pm (GMT +1) (2 km SE)All earthquakes at La Palma

Mono Lake volcano (California): 7 earthquakes up to magnitude 3.0

7 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 1 hour 26 minutes ago. Hypocenter depths ranged between 13.0 and 2.7 km.
Earthquake details: (only 5 largest)
3.0 quake 30 mi north of Mammoth Lakes, Mono County, California, USA, Sep 28, 2021 12:09 pm (GMT -7) (9 km N)2.5 quake 13km SSE of Bodie, CA, Sep 28, 2021 3:23 pm (GMT -7) (12 km NNE)2.4 quake 13km SSE of Bodie, CA, Sep 28, 2021 5:09 am (GMT -7) (12 km NNE)1.9 quake 12km SSE of Bodie, CA, Sep 27, 2021 11:14 pm (GMT -7) (14 km NNE)1.7 quake 13km SSE of Bodie, CA, Sep 27, 2021 11:14 pm (GMT -7) (13 km NNE)All earthquakes at Mono Lake

Nisyros volcano (Greece): 18 earthquakes up to magnitude 3.2

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 1 hour 23 minutes ago. Hypocenter depths ranged between 15.9 and 5.0 km.
Earthquake details: (only 5 largest)
3.2 quake Aegean Sea, 49 km south of Kos, Dodecanese, South Aegean, Greece, Sep 28, 2021 9:09 pm (GMT +3) (16 km S)3.1 quake Aegean Sea, 45 km south of Kos, Dodecanese, South Aegean, Greece, Sep 28, 2021 3:32 am (GMT +3) (9 km S)2.9 quake Aegean Sea, 48 km south of Kos, Dodecanese, South Aegean, Greece, Sep 28, 2021 2:55 am (GMT +3) (13 km SSW)2.7 quake Aegean Sea, 49 km south of Kos, Dodecanese, South Aegean, Greece, Sep 29, 2021 1:14 am (GMT +3) (14 km SSE)2.2 quake Aegean Sea, 47 km south of Kos, Dodecanese, South Aegean, Greece, Sep 28, 2021 6:55 pm (GMT +3) (11 km S)All earthquakes at Nisyros

Parker volcano (Mindanao): 4 earthquakes up to magnitude 4.2

4 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 11.0 and 2.0 km.
Earthquake details:
4.2 quake 30 km south of Koronadal City, Philippines, Sep 28, 2021 11:08 pm (GMT +8) (13 km N)3.4 quake Province of Sarangani, 22 km south of Lake Sebu, Philippines, Sep 29, 2021 3:34 am (GMT +8) (19 km WSW)3.3 quake 39 km south of Koronadal City, Philippines, Sep 28, 2021 11:23 pm (GMT +8) (5 km NNW)2.9 quake 20 km southeast of Lake Sebu, Philippines, Sep 29, 2021 12:22 am (GMT +8) (11 km WSW)All earthquakes at Parker

Pinatubo volcano (Luzon Island): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 18.0 km depth at 17 km distance N from the volcano.
Earthquake details:
2.1 quake Province of Tarlac, 21 km west of Mabalacat, Philippines, Sep 28, 2021 10:15 pm (GMT +8) (17 km N)All earthquakes at Pinatubo

Sibualbuali volcano (Sumatra): 2 earthquakes up to magnitude 3.0

2 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 10.0 and 10.0 km.
Earthquake details:
3.0 quake 39 km north of Padangsidempuan, North Sumatra, Indonesia, Sep 28, 2021 10:01 pm (GMT +7) (19 km N)2.4 quake 36 km north of Padangsidempuan, North Sumatra, Indonesia, Sep 28, 2021 2:07 pm (GMT +7) (17 km NNW)All earthquakes at Sibualbuali
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