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

Quakes detected near: Bardarbunga (5 quakes between mag 0.4-1.1), Campi Flegrei (Phlegrean Fields) (1 quake mag 1.5), Canlaon (1 quake mag 3.2), Clear Lake (28 quakes between mag 0.3-2.3), Coso (5 quakes between mag 0.9-1.8), Hekla (2 quakes between mag 0.5-1.2)
Herdubreid (2 quakes between mag 0.6-1.1), Katla (3 quakes between mag 0.5-1.3), Krísuvík (39 quakes between mag 0.1-2.3), Long Valley (3 quakes between mag 0.2-1.0), Nejapa-Miraflores (1 quake mag 2.2), Reporoa (1 quake mag 1.3), Reykjanes (26 quakes between mag 0.1-2.0), Salton Buttes (1 quake mag 1.4), Turrialba (2 quakes between mag 2.8-3.3) (updated 22h50)

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:


Canlaon volcano (Central Philippines): magnitude 3.2 earthquake

A magnitude 3.2 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.0 km depth at 10 km distance NW from the volcano.
Earthquake details:
3.2 quake 21 km southeast of Mansilingan, Negros Occidental, Western Visayas, Philippines, 21 Feb 2021 10:10 am (GMT +8) (10 km NW)All earthquakes at Canlaon

Clear Lake volcano (California): 28 earthquakes up to magnitude 2.3

Possible earthquake swarm: 28 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 3.3 and 0.3 km.
Earthquake details: (only 5 largest)
2.3 quake 8km WNW of Cobb, CA, USA, 21 Feb 2021 10:54 am (GMT -8) (15 km SSW)1.6 quake 8km NW of The Geysers, CA, USA, 20 Feb 2021 5:45 pm (GMT -8) (16 km SSW)1.1 quake 6km NW of The Geysers, CA, USA, 20 Feb 2021 9:38 pm (GMT -8) (17 km S)1.1 quake 6km NW of The Geysers, CA, USA, 20 Feb 2021 3:29 pm (GMT -8) (18 km SSW)1.0 quake 8km NW of The Geysers, CA, USA, 20 Feb 2021 6:30 pm (GMT -8) (16 km SSW)All earthquakes at Clear Lake

Krísuvík volcano (Iceland): 39 earthquakes up to magnitude 2.3

Possible earthquake swarm: 39 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 7.4 and 1.1 km.
Earthquake details: (only 5 largest)
2.3 quake 0.9 Km SE of Fagradalsfjall, Iceland, 21 Feb 2021 9:28 am (GMT +0) (9 km WSW)1.4 quake 1.0 Km ESE of Fagradalsfjall, Iceland, 21 February 2021 06:05 GMT (8 km WSW)1.3 quake 1.0 Km SSE of Fagradalsfjall, Iceland, 21 Feb 2021 9:23 am (GMT +0) (9 km WSW)1.2 quake 0.9 Km SSE of Fagradalsfjall, Iceland, 21 Feb 2021 9:33 am (GMT +0) (9 km WSW)1.2 quake 0.9 Km SSE of Fagradalsfjall, Iceland, 21 Feb 2021 9:26 am (GMT +0) (9 km WSW)All earthquakes at Krísuvík

Nejapa-Miraflores volcano (Nicaragua): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.0 km depth at 11 km distance SE from the volcano.
Earthquake details:
2.2 quake 9.2 km south of Managua, Nicaragua, 21 Feb 2021 9:43 am (GMT -6) (11 km SE)All earthquakes at Nejapa-Miraflores

Reykjanes volcano (Iceland): 26 earthquakes up to magnitude 2.0

Possible earthquake swarm: 26 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 6.7 and 0.1 km.
Earthquake details: (only 5 largest)
2.0 quake 3.3 Km NNW of Grindavík, Iceland, 21 Feb 2021 5:30 pm (GMT +0) (4 km SE)1.5 quake 3.1 Km NE of Grindavík, Iceland, 21 Feb 2021 12:38 pm (GMT +0) (7 km ESE)1.4 quake 1.5 Km WSW of Fagradalsfjall, Iceland, 21 Feb 2021 3:38 pm (GMT +0) (11 km E)1.2 quake 1.3 Km NE of Grindavík, Iceland, 21 Feb 2021 8:33 am (GMT +0) (7 km SE)1.2 quake 2.8 Km NNW of Grindavík, Iceland, 21 Feb 2021 12:13 pm (GMT +0) (4 km SE)All earthquakes at Reykjanes

Turrialba volcano (Costa Rica): 2 earthquakes up to magnitude 3.3

2 earthquakes occurred near (under) the volcano at nearly the same time (10:39 UTC). Hypocenter depths ranged between 10.0 and 3.0 km.
Earthquake details:
3.3 quake Siquirres, Provincia de Limon, 15 km north of Turrialba, Costa Rica, 21 de febrero del 2021 4:39 am (12 km E)2.8 quake Siquirres, Provincia de Limon, 13 km north of Turrialba, Costa Rica, 2021-02-21 04:39:26 (12 km E)All earthquakes at Turrialba
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/122362/Volcano-earthquake-report-for-Sunday-21-Feb-2021.html