Volcano earthquake report for Tuesday, 18 Jul 2023
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 18 Jul 2023 Number in brackets indicate nr of quakes.

Quakes detected near: Agung (1 quake mag 3.0), Apo (1 quake mag 2.7), Askja (3 quakes between mag 0.3-1.5), Brennisteinsfjöll (9 quakes between mag 0.2-1.4), Cabalian (1 quake mag 1.7), Campi Flegrei (Phlegrean Fields) (9 quakes between mag 0.2-3.0)
Chaîne des Puys (1 quake mag 1.3), Chichinautzin (1 quake mag 3.5), Clear Lake (11 quakes between mag 0.3-1.1), Cleveland (3 quakes between mag 0.6-1.9), Eldey (2 quakes between mag 0.8-1.0), Etna (1 quake mag 1.0), Fagradalsfjall (2 quakes between mag 0.7-1.4), Galeras (1 quake mag 1.3), Herdubreid (2 quakes between mag 0.7-1.0), Katla (4 quakes between mag 0.3-1.8), Kilauea (2 quakes between mag 1.7-2.1), Krísuvík (9 quakes between mag 0.1-3.0), Loki-Fögrufjöll volcano (1 quake mag 1.1), Martin (6 quakes between mag 0.2-2.1), Mauna Kea (1 quake mag 1.8), Maunaloa (1 quake mag 1.9), Prestahnukur (1 quake mag 1.0), Reykjanes (11 quakes between mag 0.2-2.7), Ruapehu (2 quakes between mag 0.9-1.0), Sibualbuali (1 quake mag 3.2), Talakmau (1 quake mag 3.6), Terceira (1 quake mag 2.1), Turrialba (1 quake mag 3.4), White Island (2 quakes between mag 2.1-2.2) (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:



Agung volcano (Bali): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.0 km depth at 12 km distance NE from the volcano.
Earthquake details:
3.0 quake 21 km north of Amlapura, Karangasem Regency, Bali, Indonesia, Jul 18, 2023 9:27 pm (GMT +8) (12 km NE)
All earthquakes at Agung

Apo volcano (Mindanao): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 22.0 km depth at 12 km distance N from the volcano.
Earthquake details:
2.7 quake Davao, 22 km northeast of Kidapawan, Philippines, Jul 18, 2023 6:12 pm (GMT +8) (12 km N)
All earthquakes at Apo
Apo volcano (2938 m) on Mindanao forms the highest peak of the Philippines. Its volcanic history is not well known, but although there are no historic eruptions it is considered to be active.

The volcano has an extensive hydrothermal field with ongoing geothermal exploration. Small shallow earthquakes related to this activity are common.

Campi Flegrei (Phlegrean Fields) volcano (Italy): 9 earthquakes up to magnitude 3.0

9 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 1 hour 15 minutes ago. Hypocenter depths ranged between 10.0 and 0.8 km.
Earthquake details: (only 5 largest)
Reported seismic-like event (likely no quake): 34 km north of Capri, Neapel, Campania, Italy, Jul 18, 2023 5:52 pm (GMT +2) (11 km ENE)
1.6 quake Italy: Campi Flegrei Jul 19, 2023 12:25 am (GMT +2) (0 km SSW)
0.6 quake Italy: Campi Flegrei Area Jul 19, 2023 12:34 am (GMT +2) (1 km WSW)
0.5 quake Italy: Campi Flegrei Area Jul 18, 2023 4:30 am (GMT +2) (1 km E)
0.4 quake Italy: Campi Flegrei Area Jul 19, 2023 12:35 am (GMT +2) (1 km WSW)
All earthquakes at Campi Flegrei (Phlegrean Fields)

Chichinautzin volcano (Western & Central Mexico): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.3 km depth at 6 km distance SW from the volcano.
Earthquake details:
3.5 quake 14 km northeast of Cuernavaca, Morelos, Mexico, Jul 17, 2023 11:17 pm (GMT -6) (6 km SW)
All earthquakes at Chichinautzin

Clear Lake volcano (California): 11 earthquakes up to magnitude 1.1

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 20 minutes ago. Hypocenter depths ranged between 3.4 and 1.1 km.
Earthquake details: (only 5 largest)
1.1 quake 6 Km NW of The Geysers, CA, Jul 18, 2023 4:29 pm (GMT -7) (17 km S)
1.1 quake 8 Km W of Cobb, CA, Jul 18, 2023 11:43 am (GMT -7) (16 km SSW)
1.0 quake 7 Km NW of The Geysers, CA, Jul 18, 2023 6:06 am (GMT -7) (18 km SSW)
0.9 quake 6 Km WNW of The Geysers, CA, Jul 18, 2023 12:14 am (GMT -7) (19 km S)
0.8 quake 2 Km N of The Geysers, CA, Jul 18, 2023 12:29 pm (GMT -7) (19 km S)
All earthquakes at Clear Lake

Kilauea volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 8.2 and 1.8 km.
Earthquake details:
2.1 quake 20 mi southeast of Hawaii Island, Hawaii County, USA, Jul 18, 2023 1:52 am (GMT -10) (12 km W)
1.7 quake 6 Km SW of Volcano, Hawaii, Jul 18, 2023 8:16 am (GMT -10) (2 km ESE)
All earthquakes at Kilauea

Krísuvík volcano (Reykjanes Peninsula, Iceland): 9 earthquakes up to magnitude 3.0

9 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 10.0 and 2.8 km.
Earthquake details: (only 5 largest)
Reported seismic-like event (likely no quake): 6.6 km south of Reykjavik, Reykjavíkurborg, Capital Region, Iceland, Jul 18, 2023 4:22 am (GMT +0) (18 km NNE)
1.3 quake Iceland: 4.0 Km ENE of Keilir Jul 18, 2023 1:26 am (GMT +0) (3 km N)
1.1 quake Iceland: 0.8 Km NW of Keilir Jul 18, 2023 4:28 pm (GMT +0) (5 km WNW)
1.0 quake Iceland: 4.3 Km ESE of Keilir Jul 18, 2023 9:54 am (GMT +0) (1 km NE)
0.9 quake Iceland: 1.5 Km SW of Keilir Jul 18, 2023 4:08 pm (GMT +0) (5 km W)
All earthquakes at Krísuvík

Martin volcano (Alaska Peninsula): 6 earthquakes up to magnitude 2.1

6 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 14.6 and 0.0 km.
Earthquake details: (only 5 largest)
2.1 quake 56 mi southeast of King Salmon, Bristol Bay, Alaska, USA, Jul 18, 2023 5:50 am (GMT -8) (5 km NW)
1.8 quake 58 mi southeast of King Salmon, Bristol Bay, Alaska, USA, Jul 18, 2023 9:07 am (GMT -8) (2 km N)
1.1 quake 86 Km NW of Karluk, Alaska, Jul 18, 2023 6:41 am (GMT -8) (3 km NE)
0.6 quake 85 Km SE of King Salmon, Alaska, Jul 18, 2023 8:30 am (GMT -8) (14 km W)
0.6 quake Alaska Peninsula Jul 17, 2023 4:08 pm (GMT -8) (2 km NNW)
All earthquakes at Martin

Reykjanes volcano (Reykjanes Peninsula, Iceland): 11 earthquakes up to magnitude 2.7

Possible earthquake swarm: 11 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 7.6 and 3.9 km.
Earthquake details: (only 5 largest)
2.7 quake Iceland: 4.1 Km NNE of Reykjanestá Jul 18, 2023 8:47 am (GMT +0) (10 km SW)
1.6 quake Iceland: 3.7 Km NNE of Reykjanestá Jul 18, 2023 4:34 am (GMT +0) (10 km SW)
1.3 quake Iceland: 5.5 Km N of Reykjanestá Jul 18, 2023 3:42 am (GMT +0) (11 km WSW)
0.9 quake Iceland: 4.5 Km NNE of Reykjanestá Jul 18, 2023 3:54 am (GMT +0) (10 km SW)
0.6 quake Iceland: 4.4 Km NNE of Reykjanestá Jul 18, 2023 8:05 am (GMT +0) (10 km SW)
All earthquakes at Reykjanes

Sibualbuali volcano (Sumatra): magnitude 3.2 earthquake

A magnitude 3.2 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 10 km distance SSW from the volcano.
Earthquake details:
3.2 quake 11 km northwest of Padangsidempuan, North Sumatra, Indonesia, Jul 18, 2023 12:07 pm (GMT +7) (10 km SSW)
All earthquakes at Sibualbuali

Talakmau volcano (Sumatra): magnitude 3.6 earthquake

A magnitude 3.6 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 15 km distance N from the volcano.
Earthquake details:
3.6 quake 71 km northwest of Bukittinggi, Sumatra Barat, Indonesia, Jul 19, 2023 1:54 am (GMT +7) (15 km N)
All earthquakes at Talakmau

Terceira volcano (Azores): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.8 km depth at 7 km distance WNW from the volcano.
Earthquake details:
2.1 quake North Atlantic Ocean, 20 km northwest of Angra do Heroismo, Azores, Portugal, Jul 18, 2023 5:52 am (GMT +0) (7 km WNW)
All earthquakes at Terceira

Turrialba volcano (Costa Rica): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.0 km depth at 18 km distance ENE from the volcano.
Earthquake details:
3.4 quake 12 km west of Siquirres, Provincia de Limon, Costa Rica, Jul 17, 2023 10:58 pm (GMT -6) (18 km ENE)
All earthquakes at Turrialba

White Island volcano (New Zealand): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 1 hour 18 minutes, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 48.9 and 5.0 km.
Earthquake details:
2.2 quake South Pacific Ocean, 95 km east of Tauranga, Bay of Plenty, New Zealand, Jul 18, 2023 11:54 pm (GMT +12) (5 km ESE)
2.1 quake South Pacific Ocean, 40 km north of Whakatane, Bay of Plenty, New Zealand, Jul 18, 2023 10:35 pm (GMT +12) (12 km SW)
All earthquakes at White Island
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/216167/Volcano-earthquake-report-for-Tuesday-18-Jul-2023.html