Volcano earthquake report for Tuesday, 1 Apr 2025
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 1 Apr 2025 Number in brackets indicate nr of quakes.

Quakes detected near: Abu (22 quakes between mag 0.1-1.0), Askja (1 quake mag 1.2), Aso (2 quakes between mag 0.9-2.0), Bardarbunga (4 quakes between mag 0.5-1.9), Biliran (1 quake mag 4.0), Brennisteinsfjöll (1 quake mag 1.6)
Campi Flegrei (Phlegrean Fields) (7 quakes between mag 0.1-1.0), Clear Lake (28 quakes between mag 0.2-1.6), Don Joao de Castro Bank (1 quake mag 2.7), Eldey (6 quakes between mag 2.2-2.7), Fagradalsfjall (37 quakes between mag 0.1-3.6), Gareloi (4 quakes between mag 0.0-1.0), Grímsvötn (2 quakes between mag 1.0-1.1), Hekla (2 quakes between mag 0.5-1.4), Hrómundartindur (2 quakes between mag 1.0-1.8), Isanotski (2 quakes between mag 1.6-1.8), Jan Mayen (2 quakes between mag 1.7-1.9), Kilauea (3 quakes between mag 0.7-1.8), Kolumbo (6 quakes between mag 1.7-2.1), La Palma (3 quakes between mag 1.4-1.6), Mahagnao (1 quake mag 2.6), Masaya (1 quake mag 2.4), Mayotte Island (2 quakes between mag 0.9-1.0), Mount Rainier (2 quakes between mag 0.0-1.0), Musuan (1 quake mag 2.8), Okataina (Tarawera) (2 quakes between mag 1.3-1.8), Ontake-san (2 quakes between mag 0.1-1.4), Sabancaya (1 quake mag 3.5), Santa Clara (1 quake mag 3.0), Santorini (3 quakes between mag 1.4-1.7), Sousaki (2 quakes between mag 1.9-1.9), Svartsengi (132 quakes between mag 0.1-3.4), Taupo (1 quake mag 1.2), Tongariro (1 quake mag 2.1), White Island (1 quake mag 1.8) (updated 08h50)

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:



Abu volcano (Honshu): 22 earthquakes up to magnitude 1.0

Possible earthquake swarm: 22 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 1 hour 36 minutes ago. Hypocenter depths ranged between 30.40 and 25.80 km.
Earthquake details: (only 5 largest)
1.0 quake 33 km north of Yamaguchi, Yamaguchi, Japan, Apr 1, 2025 09:48 am (GMT +9) (4 km SSW)
0.9 quake 33 km north of Yamaguchi, Yamaguchi, Japan, Apr 1, 2025 07:50 am (GMT +9) (4 km SSW)
0.7 quake 33 km north of Yamaguchi, Yamaguchi, Japan, Apr 1, 2025 06:26 am (GMT +9) (4 km SSW)
0.6 quake 33 km north of Yamaguchi, Yamaguchi, Japan, Apr 1, 2025 06:10 am (GMT +9) (5 km SSW)
0.6 quake 34 km north of Yamaguchi, Yamaguchi, Japan, Apr 1, 2025 07:46 am (GMT +9) (4 km SSW)
All earthquakes at Abu

Biliran volcano (Central Philippines): magnitude 4.0 earthquake

A magnitude 4.0 earthquake occurred at the volcano 1 hour 45 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 17 km distance W from the volcano.
Earthquake details:
4.0 quake Philippine Sea, 10.6 km southwest of Biliran Island, Philippines, Apr 1, 2025 03:05 pm (Manila time) (17 km W)
All earthquakes at Biliran

Clear Lake volcano (California): 28 earthquakes up to magnitude 1.6

Possible earthquake swarm: 28 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 33 minutes ago. Hypocenter depths ranged between 10.88 and 0.68 km.
Earthquake details: (only 5 largest)
1.6 quake 29 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2025 08:14 am (GMT -7) (17 km SSW)
1.4 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2025 01:59 am (GMT -7) (18 km SSW)
1.4 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2025 04:08 pm (GMT -7) (19 km S)
1.1 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2025 02:41 pm (GMT -7) (18 km SSW)
1.1 quake Lake County, 27 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2025 05:12 am (GMT -7) (16 km S)
All earthquakes at Clear Lake

Don Joao de Castro Bank volcano (Azores): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 0 km depth at 10 km distance SSE from the volcano.
Earthquake details:
2.7 quake North Atlantic Ocean, 93 km northwest of Ponta Delgada, Azores, Portugal, Apr 1, 2025 12:57 am (Universal Time) (10 km SSE)
All earthquakes at Don Joao de Castro Bank

Eldey volcano (Iceland): 6 earthquakes up to magnitude 2.7

6 earthquakes occurred near (under) the volcano during 37 minutes, the last being recorded quake 27 minutes ago. Hypocenter depths ranged between 11.40 and 0.70 km.
Earthquake details: (only 5 largest)
2.7 quake Iceland: 7.4 km SSE of Geirfuglasker Apr 1, 2025 08:06 am (Reykjavik time) (13 km SSW)
2.5 quake Iceland: 2.8 km NW of Geirfuglasker Apr 1, 2025 08:06 am (Reykjavik time) (12 km W)
2.4 quake Iceland: 8.0 km SSE of Reykjanestá Apr 1, 2025 08:22 am (Reykjavik time) (17 km E)
2.3 quake Iceland: 11.5 km N of Geirfuglasker Apr 1, 2025 08:11 am (Reykjavik time) (14 km WNW)
2.2 quake Iceland: 9.9 km NW of Eldeyjardrangur Apr 1, 2025 07:50 am (Reykjavik time) (9 km NW)
All earthquakes at Eldey
Eldey is located at the beginning of the Reykjanes Ridge off the SW tip of Iceland. Its highest elevation is the top of Eldey Island, but most of the volcanic edifice is submerged.

Several eruptions occurred in historic times, last in 1926.

Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 37 earthquakes up to magnitude 3.6

Possible earthquake swarm: 37 earthquakes occurred near (under) the volcano during 1 hour 34 minutes, the last being recorded quake 19 minutes ago. Hypocenter depths ranged between 8.80 and 0.30 km.
Earthquake details: (only 5 largest)
3.6 quake Sudurnes, 33 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:08 am (Universal Time) (4 km WNW)
3.2 quake 32 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:17 am (Reykjavik time) (4 km NW)
3.2 quake 33 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:10 am (Reykjavik time) (4 km WNW)
3.1 quake 33 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:12 am (Reykjavik time) (4 km WNW)
2.7 quake 2.2 km NE of Stóra-Skógfell Apr 1, 2025 08:12 am (Universal Time) (4 km WNW)
All earthquakes at Fagradalsfjall

Kolumbo volcano (Greece): 6 earthquakes up to magnitude 2.1

6 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 14.50 and 2.20 km.
Earthquake details: (only 5 largest)
2.1 quake Aegean Sea, 24 km northeast of Santorini Island, Cyclades, South Aegean, Greece, Mar 31, 2025 11:58 pm (GMT +3) (15 km ENE)
2.0 quake Aegean Sea, 25 km northeast of Santorini Island, Cyclades, South Aegean, Greece, Apr 1, 2025 05:44 am (GMT +3) (13 km NE)
1.9 quake Aegean Sea, 24 km northeast of Santorini Island, Cyclades, South Aegean, Greece, Apr 1, 2025 03:55 am (GMT +3) (13 km NE)
1.8 quake Aegean Sea, 186 km northeast of Chania, Chania, Crete, Greece, Apr 1, 2025 07:04 am (GMT +3) (13 km NE)
1.8 quake Aegean Sea, 24 km east of Ios Island, Cyclades, South Aegean, Greece, Apr 1, 2025 06:55 am (GMT +3) (17 km NNE)
All earthquakes at Kolumbo

Mahagnao volcano (Central Philippines): 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 1.00 km depth at 17 km distance NNW from the volcano.
Earthquake details:
2.6 quake 21 km east of Ormoc, Province of Leyte, Eastern Visayas, Philippines, Apr 1, 2025 02:32 pm (GMT +8) (17 km NNW)
All earthquakes at Mahagnao

Masaya volcano (Nicaragua): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.00 km depth at 4 km distance SE from the volcano.
Earthquake details:
2.4 quake 4.8 km west of Masaya, Departamento de Masaya, Nicaragua, Mar 31, 2025 05:58 pm (GMT -6) (4 km SE)
All earthquakes at Masaya

Musuan volcano (Mindanao): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 23.00 km depth at 17 km distance E from the volcano.
Earthquake details:
2.8 quake 15 km southeast of NIA Valencia, Philippines, Mar 31, 2025 08:48 pm (GMT +8) (17 km E)
All earthquakes at Musuan

Sabancaya volcano (Peru): 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 9.00 km depth at 12 km distance ENE from the volcano.
Earthquake details:
3.5 quake 66 km north of Cono Norte, Arequipa, Peru, Mar 31, 2025 09:03 am (GMT -5) (12 km ENE)
All earthquakes at Sabancaya

Santa Clara volcano (Utah): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 16 km distance SSE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 0.8 mi north of St. George, Washington County, Utah, United States, Mar 31, 2025 12:54 pm (GMT -6) (16 km SSE)
All earthquakes at Santa Clara

Svartsengi volcano (Reykjanes Peninsula, Iceland): 132 earthquakes up to magnitude 3.4

Possible earthquake swarm: 132 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 12 minutes ago. Hypocenter depths ranged between 12.50 and 0.10 km.
Earthquake details: (only 5 largest)
3.4 quake Sudurnes, 48 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:15 am (Universal Time) (10 km WSW)
3.0 quake 41 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 07:59 am (Reykjavik time) (2 km SW)
3.0 quake Sudurnes, 42 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 08:02 am (Reykjavik time) (3 km SSW)
2.8 quake Sudurnes, 43 km southwest of Reykjavik, Capital, Iceland, Apr 1, 2025 07:36 am (Reykjavik time) (4 km WSW)
2.7 quake Iceland: 3.0 km SE of Grindavík Apr 1, 2025 08:03 am (Reykjavik time) (6 km S)
All earthquakes at Svartsengi

Tongariro volcano (North Island): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 16 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 4.50 km depth at 17 km distance NE from the volcano.
Earthquake details:
2.1 quake 3.1 km west of Turangi, Waikato, New Zealand, Apr 1, 2025 09:34 pm (GMT +13) (17 km NE)
All earthquakes at Tongariro
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/268231/Volcano-earthquake-report-for-Tuesday-1-Apr-2025.html