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

Quakes detected near: Bardarbunga (2 quakes between mag 1.1-1.5), Clear Lake (11 quakes between mag 0.6-1.4), Colima (1 quake mag 3.0), Coso (4 quakes between mag 0.5-1.0), Eldey (1 quake mag 2.1), Grímsvötn (1 quake mag 1.6)
Herdubreid (8 quakes between mag 0.2-1.1), Krísuvík (15 quakes between mag 0.4-1.3), La Palma (140 quakes between mag 2.4-3.6), Mount Rainier (2 quakes between mag 0.9-1.1), Moyuta (1 quake mag 3.0), Nisyros (1 quake mag 2.5), Reporoa (2 quakes between mag 0.9-1.3), Reykjanes (11 quakes between mag 0.1-1.3), Santorini (1 quake mag 3.0), Telomoyo (1 quake mag 2.9), Turrialba (1 quake mag 3.0) (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:


Clear Lake volcano (California): 11 earthquakes up to magnitude 1.4

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 9.6 and 1.1 km.
Earthquake details: (only 5 largest)
1.4 quake 9km NW of The Geysers, CA, Oct 28, 2021 10:00 am (GMT -7) (16 km SSW)1.2 quake 3km NNW of The Geysers, CA, Oct 28, 2021 7:09 am (GMT -7) (18 km S)1.1 quake 6km NW of The Geysers, CA, Oct 28, 2021 9:07 am (GMT -7) (17 km S)1.0 quake 12km ENE of Cloverdale, CA, Oct 27, 2021 10:52 pm (GMT -7) (17 km SSW)0.9 quake 8km NW of The Geysers, CA, Oct 28, 2021 7:00 am (GMT -7) (16 km SSW)All earthquakes at Clear Lake

Colima volcano (Western & Central Mexico): magnitude 3.0 earthquake

A magnitude 3.0 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 8 km distance N from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): Michoacan, 20 km southwest of Ciudad Guzman, Zapotlan el Grande, Jalisco, Mexico, Oct 27, 2021 8:15 pm (GMT -5) (8 km N)All earthquakes at Colima

Eldey volcano (Iceland): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance SW from the volcano.
Earthquake details:
2.1 quake Iceland: 5.6 Km S of Geirfugladrangur Oct 28, 2021 4:41 am (GMT +0) (16 km SW)All earthquakes at Eldey
Eldey is located at the beginning of the Reykjanes Ridge off the SW tip of Iceland. Its highest elevation is the top of Eldey Island, but most of the volcanic edifice is submerged.

Several eruptions occurred in historic times, last in 1926.

Krísuvík volcano (Reykjanes Peninsula, Iceland): 15 earthquakes up to magnitude 1.3

Possible earthquake swarm: 15 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 6.4 and 1.1 km.
Earthquake details: (only 5 largest)
1.3 quake Iceland: 2.2 Km SSW of Keilir Oct 28, 2021 2:39 pm (GMT +0) (5 km W)1.1 quake Iceland: 2.2 Km SSW of Keilir Oct 28, 2021 2:37 pm (GMT +0) (4 km W)1.1 quake Iceland: 4.8 Km E of Keilir Oct 28, 2021 1:28 am (GMT +0) (2 km ENE)1.0 quake Iceland: 4.1 Km ESE of Keilir Oct 28, 2021 6:59 am (GMT +0) (1 km NE)0.9 quake Iceland: 2.4 Km SSW of Keilir Oct 28, 2021 5:33 am (GMT +0) (5 km WSW)All earthquakes at Krísuvík

La Palma volcano (Canary Islands): 140 earthquakes up to magnitude 3.6

Possible earthquake swarm: 140 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 15.0 and 10.0 km.
Earthquake details: (only 5 largest)
3.6 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Oct 28, 2021 10:56 am (GMT +1) (2 km S)3.6 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Oct 28, 2021 8:22 am (GMT +1) (2 km S)3.6 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Oct 28, 2021 8:51 am (GMT +1) (2 km SSE)3.6 quake La Palma Island, 14 km southeast of Los Llanos de Aridane, Spain, Oct 28, 2021 5:04 am (GMT +1) (3 km SSE)3.6 quake La Palma Island, 13 km southeast of Los Llanos de Aridane, Spain, Oct 28, 2021 2:27 pm (GMT +1) (3 km SSW)All earthquakes at La Palma

Moyuta volcano (Guatemala): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.0 km depth at 12 km distance ENE from the volcano.
Earthquake details:
3.0 quake 28 km south of Jutiapa, Departamento de Jutiapa, Guatemala, Oct 28, 2021 2:13 am (GMT -6) (12 km ENE)All earthquakes at Moyuta

Nisyros volcano (Greece): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.9 km depth at 10 km distance SSW from the volcano.
Earthquake details:
2.5 quake Aegean Sea, 47 km south of Kos, Dodecanese, South Aegean, Greece, Oct 28, 2021 12:19 pm (GMT +3) (10 km SSW)All earthquakes at Nisyros

Reykjanes volcano (Reykjanes Peninsula, Iceland): 11 earthquakes up to magnitude 1.3

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 2 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 4.8 and 0.4 km.
Earthquake details: (only 5 largest)
1.3 quake Iceland: 4.0 Km N of Grindavík Oct 28, 2021 11:35 am (GMT +0) (4 km ESE)0.7 quake Iceland: 3.3 Km N of Grindavík Oct 28, 2021 1:57 pm (GMT +0) (5 km ESE)0.7 quake Iceland: 4.4 Km N of Grindavík Oct 28, 2021 12:41 pm (GMT +0) (4 km ESE)0.7 quake Iceland: 4.0 Km N of Grindavík Oct 28, 2021 11:51 am (GMT +0) (4 km ESE)0.6 quake Iceland: 4.0 Km N of Grindavík Oct 28, 2021 12:55 pm (GMT +0) (4 km ESE)All earthquakes at Reykjanes

Santorini volcano (Greece): 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 SE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): Anaphi Island, 1.8 km east of Emporeio, Kykladene, South Aegean, Greece, Oct 28, 2021 5:00 am (GMT +3) (8 km SE)All earthquakes at Santorini

Telomoyo volcano (Central Java): magnitude 2.9 earthquake

A magnitude 2.9 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 6 km distance N from the volcano.
Earthquake details:
2.9 quake Java, 6.5 km south of Ambarawa, Central Java, Indonesia, Oct 28, 2021 7:20 am (GMT +7) (6 km N)All earthquakes at Telomoyo

Turrialba volcano (Costa Rica): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 14 km distance ESE from the volcano.
Earthquake details:
3.0 quake 8.6 km north of Turrialba, Provincia de Cartago, Costa Rica, Oct 27, 2021 8:56 pm (GMT -6) (14 km ESE)All earthquakes at Turrialba
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