Volcano earthquake report for Saturday, 1 Apr 2023

Quakes detected near: Aniakchak (1 quake mag 2.5), Atitlán (1 quake mag 2.6), Bandai (1 quake mag 2.8), Brennisteinsfjöll (5 quakes between mag 0.1-1.1), Chichinautzin (1 quake mag 3.0), Clear Lake (21 quakes between mag 0.3-1.3)
El Hierro (1 quake mag 2.2), Eldey (6 quakes between mag 0.8-1.9), Katla (2 quakes between mag 0.7-2.5), Kilauea (1 quake mag 3.2), Koruhüyüğü (1 quake mag 1.8), Krísuvík (3 quakes between mag 0.4-1.0), Michoacán-Guanajuato (1 quake mag 3.8), Mombacho (1 quake mag 3.3), Mount St. Helens (1 quake mag 1.2), Nevado de Toluca (1 quake mag 3.0), Nevado del Ruiz (8 quakes between mag 0.8-3.1), Novarupta (1 quake mag 1.2), Okataina (Tarawera) (1 quake mag 2.1), Okmok (1 quake mag 1.4), Salton Buttes (1 quake mag 1.5), San Pablo (1 quake mag 3.0), Sangay (Philippines) (1 quake mag 2.5), Santa Isabel (1 quake mag 1.7), Takawangha (1 quake mag 2.3), Tanaga (1 quake mag 2.9), Vesuvius (4 quakes between mag 0.2-2.3) (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:

Aniakchak volcano (Alaska Peninsula): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.3 km depth at 6 km distance ESE from the volcano.
Earthquake details:
2.5 quake 21 mi east of Port Heiden, Lake and Peninsula, Alaska, USA, Apr 1, 2023 8:07 am (GMT -8) (6 km ESE)
All earthquakes at Aniakchak

Atitlán volcano (Guatemala): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.0 km depth at 10 km distance ESE from the volcano.
Earthquake details:
2.6 quake Departamento de Chimaltenango, 17 km southeast of Santiago Atitlan, Guatemala, Apr 1, 2023 3:37 pm (GMT -6) (10 km ESE)
All earthquakes at Atitlán

Bandai volcano (Honshu): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.1 km depth at 8 km distance NNW from the volcano.
Earthquake details:
2.8 quake 15 km east of Kitakata, Fukushima, Japan, Apr 1, 2023 10:48 pm (GMT +9) (8 km NNW)
All earthquakes at Bandai

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

A magnitude 3.0 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 19 km distance N from the volcano.
Earthquake details:
Reported quake or seismic-like event: 12 km northwest of Iztapalapa, Mexico D.F., Apr 1, 2023 2:22 am (GMT -6) (19 km N)
All earthquakes at Chichinautzin

Clear Lake volcano (California): 21 earthquakes up to magnitude 1.3

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 52 minutes ago. Hypocenter depths ranged between 7.2 and 1.3 km.
Earthquake details: (only 5 largest)
1.3 quake 8km NW of Cobb, CA, Apr 1, 2023 6:05 am (GMT -7) (12 km S)
1.3 quake 8km WNW of Cobb, CA, Apr 1, 2023 3:47 am (GMT -7) (15 km SSW)
1.2 quake 4km W of Cobb, CA, Apr 1, 2023 12:07 am (GMT -7) (16 km S)
1.2 quake 7km NW of The Geysers, CA, Apr 1, 2023 12:29 am (GMT -7) (18 km SSW)
1.1 quake 13km ENE of Cloverdale, CA, Mar 31, 2023 11:20 pm (GMT -7) (17 km SSW)
All earthquakes at Clear Lake

El Hierro volcano (Canary Islands): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 24 hours ago. The quake, which might be volcanic in origin, was located at a depth of 30.0 km depth at 8 km distance NW from the volcano.
Earthquake details:
2.2 quake El Hierro, 8 km south of Frontera, Spain, Apr 1, 2023 1:15 am (GMT +1) (8 km NW)
All earthquakes at El Hierro

Katla volcano (Iceland): 2 earthquakes up to magnitude 2.5

2 earthquakes occurred near (under) the volcano during 5 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 3.9 and 0.1 km.
Earthquake details:
2.5 quake Iceland: 7.9 Km N of Hábunga Apr 1, 2023 3:15 pm (GMT +0) (2 km NNW)
0.7 quake Iceland: 1.2 Km SW of Goðabunga Apr 1, 2023 10:27 am (GMT +0) (10 km W)
All earthquakes at Katla

Kilauea volcano (Hawai'i (Big Island)): magnitude 3.2 earthquake

A magnitude 3.2 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.4 km depth at 14 km distance SE from the volcano.
Earthquake details:
3.2 quake 28 mi south of Hilo, Hawaii County, USA, Apr 1, 2023 7:30 am (GMT -10) (14 km SE)
All earthquakes at Kilauea

Michoacán-Guanajuato volcano (Western & Central Mexico): magnitude 3.8 earthquake

A magnitude 3.8 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.7 km depth at 15 km distance WNW from the volcano.
Earthquake details:
3.8 quake 11 km southeast of Los Reyes de Salgado, Michoacan, Mexico, Apr 1, 2023 7:59 am (GMT -6) (15 km WNW)
All earthquakes at Michoacán-Guanajuato

Mombacho volcano (Nicaragua): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 10 km distance SE from the volcano.
Earthquake details:
3.3 quake 19 km south of Granada, Nicaragua, Apr 1, 2023 2:08 am (GMT -6) (10 km SE)
All earthquakes at Mombacho

Nevado de Toluca volcano (Western & Central Mexico): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 12 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 15 km distance ENE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 53 km northeast of Tenango de Arista, Tenango del Valle, Mexico, Apr 1, 2023 6:11 am (GMT -6) (15 km ENE)
All earthquakes at Nevado de Toluca

Nevado del Ruiz volcano (Colombia): 8 earthquakes up to magnitude 3.1

8 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 4.0 and 0.4 km.
Earthquake details: (only 5 largest)
3.1 quake Departamento de Tolima, 29 km southeast of Manizales, Caldas, Colombia, Apr 1, 2023 10:40 am (GMT -5) (3 km SW)
1.8 quake 24 km southeast of Manizales, Caldas, Colombia, Apr 1, 2023 10:26 am (GMT -5) (7 km W)
1.5 quake Colombia Apr 1, 2023 11:50 am (GMT -5) (3 km S)
1.3 quake Departamento de Tolima, 26 km southeast of Manizales, Caldas, Colombia, Apr 1, 2023 11:56 am (GMT -5) (4 km W)
1.1 quake Colombia Apr 1, 2023 6:36 am (GMT -5) (4 km W)
All earthquakes at Nevado del Ruiz

Okataina (Tarawera) volcano (New Zealand): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 3.9 km depth at 15 km distance E from the volcano.
Earthquake details:
2.1 quake 3.1 km west of Kawerau, Bay of Plenty, New Zealand, Apr 2, 2023 9:20 am (GMT +12) (15 km E)
All earthquakes at Okataina (Tarawera)

San Pablo volcano (Luzon Island): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 19 km distance NW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 54 km north of Batangas, Calabarzon, Philippines, Apr 1, 2023 6:41 pm (GMT +8) (19 km NW)
All earthquakes at San Pablo

Sangay (Philippines) volcano (Luzon Island): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 5 km distance NE from the volcano.
Earthquake details:
2.5 quake 21 km northeast of Iriga City, Province of Camarines Sur, Bicol, Philippines, Apr 1, 2023 3:09 pm (GMT +8) (5 km NE)
All earthquakes at Sangay (Philippines)

Takawangha volcano (Aleutian Islands): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.6 km depth at 5 km distance WSW from the volcano.
Earthquake details:
2.3 quake 61 mi west of Adak, Aleutians West, Alaska, USA, Mar 31, 2023 11:20 pm (GMT -9) (5 km WSW)
All earthquakes at Takawangha

Tanaga volcano (Aleutian Islands): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 3.6 km depth at 6 km distance SE from the volcano.
Earthquake details:
2.9 quake 62 mi west of Adak, Aleutians West, Alaska, USA, Mar 31, 2023 11:11 pm (GMT -9) (6 km SE)
All earthquakes at Tanaga

Vesuvius volcano (Italy): 4 earthquakes up to magnitude 2.3

4 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 1 hour 15 minutes ago. Hypocenter depths ranged between 0.3 and 0.1 km.
Earthquake details:
2.3 quake 6 km northeast of Torre del Greco, Neapel, Campania, Italy, Apr 1, 2023 10:01 pm (GMT +2) (0 km ENE)
2.2 quake 5.9 km northeast of Torre del Greco, Neapel, Campania, Italy, Apr 1, 2023 9:34 pm (GMT +2) (0 km WNW)
0.2 quake Italy: Vesuvio Area Apr 2, 2023 12:34 am (GMT +2) (0 km ESE)
0.2 quake Italy: Vesuvio Area Apr 2, 2023 12:13 am (GMT +2) (0 km SSE)
All earthquakes at Vesuvius