Volcano earthquake report for Wednesday, 20 Apr 2022
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 20 Apr 2022 Number in brackets indicate nr of quakes.

Quakes detected near: Campi Flegrei (Phlegrean Fields) (11 quakes between mag 0.1-3.0), Cerro Singüil (1 quake mag 2.3), Chaîne des Puys (1 quake mag 1.7), Clear Lake (32 quakes between mag 0.3-1.7), Coso (12 quakes between mag 0.4-1.8), El Chichón (1 quake mag 3.5)
Fagradalsfjall (7 quakes between mag 0.2-1.2), Katla (1 quake mag 1.2), Kolumbo (3 quakes between mag 1.4-3.0), Krísuvík (8 quakes between mag 0.3-1.9), Maunaloa (1 quake mag 3.5), Olot Field (1 quake mag 1.2), Paluweh (1 quake mag 2.5), Reykjanes (14 quakes between mag 0.1-2.8), Ruapehu (1 quake mag 1.4), Salton Buttes (2 quakes between mag 1.5-1.6), São Jorge (2 quakes between mag 2.3-2.4), Tarakan (1 quake mag 3.0), Taupo (5 quakes between mag 1.6-1.8) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 50 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:



Campi Flegrei (Phlegrean Fields) volcano (Italy): 11 earthquakes up to magnitude 3.0

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 10.0 and 0.9 km.
Earthquake details: (only 5 largest)
Reported seismic-like event (likely no quake): 0.3 km northeast of Naples, Neapel, Campania, Italy, Apr 20, 2022 11:46 pm (GMT +2) (11 km ENE)0.8 quake Italy: Campi Flegrei Area Apr 20, 2022 4:15 pm (GMT +2) (1 km SW)0.6 quake Italy: Campi Flegrei Area Apr 20, 2022 5:52 am (GMT +2) (1 km NE)0.5 quake Italy: Campi Flegrei Area Apr 20, 2022 3:34 pm (GMT +2) (0 km SSE)0.5 quake Italy: Campi Flegrei Area Apr 20, 2022 5:57 am (GMT +2) (1 km NE)All earthquakes at Campi Flegrei (Phlegrean Fields)

Cerro Singüil volcano (El Salvador): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 10 km distance WNW from the volcano.
Earthquake details:
2.3 quake 22 km northwest of Santa Ana, El Salvador, Apr 20, 2022 3:25 am (GMT -6) (10 km WNW)All earthquakes at Cerro Singüil

Clear Lake volcano (California): 32 earthquakes up to magnitude 1.7

Possible earthquake swarm: 32 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 9.8 and 0.3 km.
Earthquake details: (only 5 largest)
1.7 quake 4km NW of The Geysers, CA, Apr 20, 2022 12:35 am (GMT -7) (18 km S)1.6 quake 6km NW of The Geysers, CA, Apr 20, 2022 11:32 am (GMT -7) (18 km SSW)1.6 quake 6km WNW of The Geysers, CA, Apr 19, 2022 7:13 pm (GMT -7) (19 km SSW)1.6 quake 4km NW of The Geysers, CA, Apr 19, 2022 7:58 pm (GMT -7) (18 km S)1.4 quake 7km WNW of Cobb, CA, Apr 20, 2022 2:29 pm (GMT -7) (15 km S)All earthquakes at Clear Lake

Coso volcano (California): 12 earthquakes up to magnitude 1.8

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 8.7 and 2.9 km.
Earthquake details: (only 5 largest)
1.8 quake 20km E of Little Lake, CA, Apr 19, 2022 8:25 pm (GMT -7) (16 km SE)1.5 quake 15km ESE of Little Lake, CA, Apr 20, 2022 7:40 am (GMT -7) (16 km SSE)1.4 quake 21km E of Little Lake, CA, Apr 20, 2022 7:32 am (GMT -7) (17 km SE)1.1 quake 16km ESE of Little Lake, CA, Apr 20, 2022 7:12 am (GMT -7) (15 km SSE)1.1 quake 5km SSE of Coso Junction, CA, Apr 19, 2022 9:28 pm (GMT -7) (10 km WSW)All earthquakes at Coso

El Chichón volcano (Southern Mexico): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 29.0 km depth at 9 km distance E from the volcano.
Earthquake details:
3.5 quake Chiapas, 30 km southwest of Teapa, Tabasco, Mexico, Apr 19, 2022 10:16 pm (GMT -5) (9 km E)All earthquakes at El Chichón

Kolumbo volcano (Greece): 3 earthquakes up to magnitude 3.0

3 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 12.2 and 5.0 km.
Earthquake details:
3.0 quake Aegean Sea, 10.8 km east of Oia, Nomos Kykladon, South Aegean, Greece, Apr 20, 2022 3:10 pm (GMT +3) (3 km S)1.9 quake Aegean Sea, 11 km east of Oia, Nomos Kykladon, South Aegean, Greece, Apr 20, 2022 10:12 pm (GMT +3) (3 km S)1.4 quake Dodecanese Islands, Greece, Apr 20, 2022 7:20 am (GMT +3) (2 km SE)All earthquakes at Kolumbo

Maunaloa volcano (Hawai'i (Big Island)): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 6 km distance SSW from the volcano.
Earthquake details:
3.5 quake 41 mi southwest of Hilo, Hawaii County, USA, Apr 19, 2022 8:32 pm (GMT -10) (6 km SSW)All earthquakes at Maunaloa

Paluweh volcano (Lesser Sunda Islands): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 30.0 km depth at 18 km distance ENE from the volcano.
Earthquake details:
2.5 quake Flores Sea, 58 km northwest of Maumere, East Nusa Tenggara, Indonesia, Apr 21, 2022 5:07 am (GMT +8) (18 km ENE)All earthquakes at Paluweh

Reykjanes volcano (Reykjanes Peninsula, Iceland): 14 earthquakes up to magnitude 2.8

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 6.2 and 0.1 km.
Earthquake details: (only 5 largest)
2.8 quake Iceland: 7.4 Km NW of Grindavík Apr 20, 2022 3:00 pm (GMT +0) (1 km WSW)1.9 quake Iceland: 4.4 Km N of Reykjanestá Apr 20, 2022 3:50 am (GMT +0) (10 km SW)1.4 quake Iceland: 6.2 Km NW of Grindavík Apr 20, 2022 3:00 pm (GMT +0) (1 km S)1.1 quake Iceland: 2.1 Km ENE of Grindavík Apr 20, 2022 12:36 pm (GMT +0) (8 km SE)0.9 quake Iceland: 3.3 Km N of Reykjanestá Apr 20, 2022 3:05 pm (GMT +0) (12 km SW)All earthquakes at Reykjanes

São Jorge volcano (Azores): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 1 hour 28 minutes, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 11.0 and 8.0 km.
Earthquake details:
2.4 quake São Jorge Island, 2.5 km east of Velas, Azores, Portugal, Apr 20, 2022 8:02 pm (GMT +0) (7 km WNW)2.3 quake São Jorge Island, 2.1 km northwest of Velas, Azores, Portugal, Apr 20, 2022 9:30 pm (GMT +0) (11 km WNW)All earthquakes at São Jorge

Tarakan volcano (Halmahera): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 43.0 km depth at 19 km distance WNW from the volcano.
Earthquake details:
3.0 quake Molucca Sea, 42 km northwest of Tobelo, Indonesia, Apr 21, 2022 1:20 am (GMT +9) (19 km WNW)All earthquakes at Tarakan
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