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

Quakes detected near: Apo (1 quake mag 2.3), Ararat (1 quake mag 2.5), Bardarbunga (3 quakes between mag 0.8-1.9), Barva (10 quakes between mag 2.7-4.3), Clear Lake (25 quakes between mag 0.3-2.2), Coso (1 quake mag 1.0)
Galeras (1 quake mag 3.0), Hekla (1 quake mag 1.0), Herdubreid (9 quakes between mag 0.3-1.4), Katla (2 quakes between mag 0.7-1.4), Katmai (1 quake mag 1.2), Koruhüyüğü (7 quakes between mag 2.1-4.2), La Palma (2 quakes between mag 1.4-1.6), Ljósufjöll (1 quake mag 1.6), Loki-Fögrufjöll volcano (2 quakes between mag 0.6-1.8), Mammoth Mountain (1 quake mag 1.6), Martin (1 quake mag 1.7), Maunaloa (1 quake mag 2.5), Mount St. Helens (1 quake mag 1.0), Novarupta (1 quake mag 1.3), Paco (1 quake mag 1.9), Poas (8 quakes between mag 2.1-5.2), Popocatépetl (1 quake mag 3.0), Reporoa (1 quake mag 1.3), Rotorua (2 quakes between mag 1.1-1.7), Ruapehu (3 quakes between mag 0.7-2.2), Tenerife (1 quake mag 1.2), Tjörnes Fracture Zone (2 quakes between mag 0.7-1.2), Ubehebe Craters (2 quakes between mag 0.5-1.5), Wrangell (1 quake mag 1.9) (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:



Apo volcano (Mindanao): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 1 hour 16 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 17.0 km depth at 19 km distance WSW from the volcano.
Earthquake details:
2.3 quake 7.7 km south of Kidapawan, Province of Cotabato, Soccsksargen, Philippines, Feb 19, 2023 6:34 am (GMT +8) (19 km WSW)
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.

Ararat volcano (Turkey): 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 9.0 km depth at 18 km distance WNW from the volcano.
Earthquake details:
2.5 quake 21 km south of Iğdır, Turkey, Feb 18, 2023 11:35 am (GMT +3) (18 km WNW)
All earthquakes at Ararat

Barva volcano (Costa Rica): 10 earthquakes up to magnitude 4.3

10 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 8.0 and 3.0 km.
Earthquake details: (only 5 largest)
4.3 quake Provincia de Heredia, 31 km north of San Jose, San José, Costa Rica, Feb 18, 2023 2:39 am (GMT -6) (9 km NNW)
4.1 quake Provincia de Heredia, 33 km north of San Jose, San José, Costa Rica, Feb 18, 2023 4:07 am (GMT -6) (10 km N)
3.7 quake Provincia de Heredia, 32 km north of San Jose, San José, Costa Rica, Feb 18, 2023 3:17 am (GMT -6) (10 km N)
3.5 quake Provincia de Heredia, 31 km north of San Jose, San José, Costa Rica, Feb 18, 2023 5:05 am (GMT -6) (9 km N)
3.5 quake Provincia de Heredia, 31 km north of San Jose, San José, Costa Rica, Feb 18, 2023 2:31 am (GMT -6) (9 km NNW)
All earthquakes at Barva

Clear Lake volcano (California): 25 earthquakes up to magnitude 2.2

Possible earthquake swarm: 25 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 52 minutes ago. Hypocenter depths ranged between 3.3 and 0.3 km.
Earthquake details: (only 5 largest)
2.2 quake 15 mi southwest of Clearlake, Lake County, California, USA, Feb 18, 2023 12:53 am (GMT -8) (18 km SSW)
1.6 quake 7km NW of The Geysers, CA, Feb 18, 2023 1:59 pm (GMT -8) (17 km S)
1.4 quake 6km NW of The Geysers, CA, Feb 18, 2023 2:14 pm (GMT -8) (17 km S)
1.3 quake 6km NW of The Geysers, CA, Feb 18, 2023 2:23 pm (GMT -8) (17 km S)
1.3 quake 4km NNW of The Geysers, CA, Feb 18, 2023 10:46 am (GMT -8) (18 km S)
All earthquakes at Clear Lake

Galeras volcano (Colombia): 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 9 km distance SSE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 11 km southwest of Pasto, Departamento de Nariño, Colombia, Feb 17, 2023 8:10 pm (GMT -5) (9 km SSE)
All earthquakes at Galeras

Koruhüyüğü volcano (Turkey): 7 earthquakes up to magnitude 4.2

7 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 26.8 and 2.0 km.
Earthquake details: (only 5 largest)
4.2 quake Hatay, 37 km southeast of Osmaniye, Turkey, Feb 18, 2023 11:56 pm (GMT +3) (7 km NW)
3.4 quake 27 km northeast of Kırıkhan, Hatay, Turkey, Feb 18, 2023 5:12 pm (GMT +3) (15 km SSW)
3.2 quake 39 km northeast of Iskenderun, Hatay, Turkey, Feb 18, 2023 7:35 am (GMT +3) (7 km SW)
2.4 quake 24 km northeast of Kırıkhan, Hatay, Turkey, Feb 18, 2023 6:36 am (GMT +3) (18 km SW)
2.3 quake Gaziantep, 31 km southeast of Osmaniye, Turkey, Feb 18, 2023 10:04 am (GMT +3) (13 km NW)
All earthquakes at Koruhüyüğü

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.8 km depth at 13 km distance E from the volcano.
Earthquake details:
2.5 quake 14 mi southeast of Hawaii Island, Hawaii County, USA, Feb 17, 2023 8:00 pm (GMT -10) (13 km E)
All earthquakes at Maunaloa

Poas volcano (Costa Rica): 8 earthquakes up to magnitude 5.2

8 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 22.0 and 2.0 km.
Earthquake details: (only 5 largest)
5.2 quake Provincia de Alajuela, 33 km north of San Jose, San José, Costa Rica, Feb 18, 2023 2:24 am (GMT -6) (7 km ENE)
3.5 quake Provincia de Alajuela, 34 km northwest of San Jose, San José, Costa Rica, Feb 18, 2023 2:32 am (GMT -6) (12 km SW)
3.3 quake Provincia de Heredia, 33 km north of San Jose, San José, Costa Rica, Feb 18, 2023 2:44 am (GMT -6) (11 km ENE)
3.1 quake Provincia de Heredia, 33 km north of San Jose, San José, Costa Rica, Feb 18, 2023 2:47 am (GMT -6) (10 km ENE)
3.0 quake Provincia de Heredia, 32 km north of San Jose, San José, Costa Rica, Feb 18, 2023 5:19 am (GMT -6) (10 km ENE)
All earthquakes at Poas

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

A magnitude 3.0 earthquake occurred at the volcano 24 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 14 km distance NW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 27 km northwest of San Miguel Xico, Valle de Chalco Solidaridad, Mexico, Feb 17, 2023 6:19 pm (GMT -6) (14 km NW)
All earthquakes at Popocatépetl

Ruapehu volcano (North Island): 3 earthquakes up to magnitude 2.2

3 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 1 hour 31 minutes ago. Hypocenter depths ranged between 30.3 and 7.1 km.
Earthquake details:
2.2 quake 4.5 km northwest of Waiouru, Ruapehu District, Manawatu-Wanganui, New Zealand, Feb 18, 2023 4:20 pm (GMT +13) (19 km SSE)
0.8 quake New Zealand Feb 19, 2023 11:18 am (GMT +13) (9 km S)
0.7 quake New Zealand Feb 18, 2023 2:55 pm (GMT +13) (12 km WSW)
All earthquakes at Ruapehu
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