Volcano earthquake report for Thursday, 1 May 2025

Quakes detected near: Abu (40 quakes between mag 0.1-1.2), Akita-Komagatake (1 quake mag 1.6), Askja (3 quakes between mag 0.6-1.6), Bardarbunga (13 quakes between mag 0.3-1.7), Barva (1 quake mag 1.1), Biliran (1 quake mag 2.5)
Cabalian (1 quake mag 2.7), Campi Flegrei (Phlegrean Fields) (3 quakes between mag 0.1-1.0), Clear Lake (17 quakes between mag 0.3-2.2), Cuernos de Negros (2 quakes between mag 2.6-3.2), Dutton (2 quakes between mag 1.1-1.1), Eldey (3 quakes between mag 1.0-1.6), Fagradalsfjall (2 quakes between mag 0.9-1.1), Gagak (1 quake mag 2.2), Grímsvötn (2 quakes between mag 1.0-1.8), Hengill (1 quake mag 1.2), Hiuchi (10 quakes between mag 0.1-1.0), Hrómundartindur (2 quakes between mag 0.8-2.1), Kilauea (1 quake mag 1.9), Kirishima (2 quakes between mag 0.1-1.6), Klyuchevskoy (3 quakes between mag 0.8-1.3), Kolumbo (13 quakes between mag 1.5-2.3), Koryaksky (2 quakes between mag 1.6-2.2), Kurikoma (2 quakes between mag 0.8-1.4), Ljósufjöll (4 quakes between mag 1.2-2.6), Lokbatan (1 quake mag 3.0), Loki-Fögrufjöll volcano (2 quakes between mag 1.0-1.3), Long Valley (1 quake mag 1.4), Maunaloa (2 quakes between mag 1.5-1.9), Milos (1 quake mag 2.2), Nasu (1 quake mag 1.2), Nii-jima (1 quake mag 1.1), Nisyros (1 quake mag 1.8), Papandayan (1 quake mag 1.7), Pocdol Mountains (1 quake mag 2.1), Ragang (1 quake mag 3.0), Santorini (2 quakes between mag 2.0-2.3), Semisopochnoi (1 quake mag 1.4), Sousaki (1 quake mag 1.5), Sundoro (1 quake mag 2.1), Svartsengi (3 quakes between mag 0.2-1.5), Tjörnes Fracture Zone (1 quake mag 1.0), Turrialba (1 quake mag 2.9), Udina (2 quakes between mag 0.8-1.0), Vesuvius (3 quakes between mag 0.1-1.3) (updated 01h50)

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): 40 earthquakes up to magnitude 1.2

Possible earthquake swarm: 40 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 31.00 and 24.60 km.
Earthquake details: (only 5 largest)
1.2 quake 35 km north of Yamaguchi, Yamaguchi, Japan, Apr 30, 2025 09:02 pm (GMT +9) (2 km SSW)
1.0 quake 35 km north of Yamaguchi, Yamaguchi, Japan, Apr 30, 2025 08:43 pm (GMT +9) (3 km WSW)
1.0 quake 36 km north of Yamaguchi, Yamaguchi, Japan, Apr 30, 2025 10:09 pm (GMT +9) (3 km WSW)
1.0 quake 35 km north of Yamaguchi, Yamaguchi, Japan, Apr 30, 2025 01:42 pm (GMT +9) (4 km WSW)
1.0 quake 38 km north of Yamaguchi, Yamaguchi, Japan, Apr 30, 2025 03:13 pm (GMT +9) (5 km WNW)
All earthquakes at Abu

Bardarbunga volcano (Iceland): 13 earthquakes up to magnitude 1.7

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 7.30 and 0.10 km.
Earthquake details: (only 5 largest)
1.7 quake 4.7 km E of Bárðarbunga Apr 30, 2025 07:17 am (Universal Time) (5 km E)
1.4 quake 3.3 km SE of Bárðarbunga Apr 30, 2025 02:20 pm (Universal Time) (3 km ESE)
1.1 quake Iceland: 3.0 km SSE of Bárðarbunga Apr 30, 2025 08:30 pm (Reykjavik time) (2 km SE)
0.9 quake Iceland: 6.5 km E of Bárðarbunga Apr 30, 2025 02:55 pm (Reykjavik time) (7 km E)
0.8 quake Iceland: 4.9 km ESE of Bárðarbunga Apr 30, 2025 12:57 pm (Reykjavik time) (5 km ESE)
All earthquakes at Bardarbunga

Biliran volcano (Central Philippines): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.00 km depth at 15 km distance WNW from the volcano.
Earthquake details:
2.5 quake 1.6 km northeast of Naval, Biliran, Eastern Visayas, Philippines, Apr 30, 2025 07:56 pm (GMT +8) (15 km WNW)
All earthquakes at Biliran

Cabalian volcano (Central Philippines): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.00 km depth at 4 km distance N from the volcano.
Earthquake details:
2.7 quake 46 km northeast of Maasin, Philippines, Apr 30, 2025 01:58 pm (GMT +8) (4 km N)
All earthquakes at Cabalian

Clear Lake volcano (California): 17 earthquakes up to magnitude 2.2

Possible earthquake swarm: 17 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 10.61 and 1.07 km.
Earthquake details: (only 5 largest)
2.2 quake Sonoma County, 16 mi southwest of Clearlake, Lake County, California, United States, Apr 30, 2025 01:42 pm (Universal Time) (17 km SSW)
1.8 quake 13 mi southwest of Clearlake, Lake County, California, United States, Apr 29, 2025 07:30 pm (GMT -7) (15 km SSW)
1.5 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Apr 30, 2025 08:14 am (GMT -7) (16 km SSW)
1.5 quake Sonoma County, 13 mi southwest of Clearlake, Lake County, California, United States, Apr 30, 2025 01:19 pm (GMT -7) (16 km SSW)
1.0 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Apr 30, 2025 12:45 pm (GMT -7) (18 km SSW)
All earthquakes at Clear Lake

Cuernos de Negros volcano (Central Philippines): 2 earthquakes up to magnitude 3.2

2 earthquakes occurred near (under) the volcano during 1 hour 6 minutes, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 1.00 and 1.00 km.
Earthquake details:
3.2 quake 16 km west of Dumaguete, Philippines, May 1, 2025 05:57 am (GMT +8) (1 km N)
2.6 quake 13 km southwest of Dumaguete, Philippines, May 1, 2025 07:04 am (GMT +8) (3 km ENE)
All earthquakes at Cuernos de Negros

Gagak volcano (West Java): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 25.00 km depth at 6 km distance S from the volcano.
Earthquake details:
2.2 quake 15 km west of Cicurug, Kabupaten Sukabumi, Jawa Barat, Indonesia, Apr 30, 2025 02:50 pm (GMT +7) (6 km S)
All earthquakes at Gagak

Hrómundartindur volcano (Iceland): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 6.90 and 5.00 km.
Earthquake details:
2.1 quake 1.9 km ENE of Hrómundartindi Apr 30, 2025 11:16 am (Universal Time) (2 km ENE)
0.8 quake Iceland: 1.2 km NNW of Raufarhólshellir Apr 30, 2025 02:12 pm (Reykjavik time) (17 km SW)
All earthquakes at Hrómundartindur

Kolumbo volcano (Greece): 13 earthquakes up to magnitude 2.3

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 35 minutes ago. Hypocenter depths ranged between 42.27 and 5.00 km.
Earthquake details: (only 5 largest)
2.3 quake Aegean Sea, 28 km northeast of Santorini Island, Cyclades, South Aegean, Greece, Apr 30, 2025 06:45 pm (GMT +3) (17 km NE)
2.0 quake Aegean Sea, 26 km east of Ios Island, Cyclades, South Aegean, Greece, May 1, 2025 12:02 am (GMT +3) (16 km NE)
2.0 quake Aegean Sea, 22 km northeast of Santorini Island, Cyclades, South Aegean, Greece, Apr 30, 2025 07:31 pm (GMT +3) (10 km NE)
2.0 quake Aegean Sea, 25 km northeast of Oia, Cyclades, South Aegean, Greece, Apr 30, 2025 06:13 pm (GMT +3) (13 km NE)
1.8 quake Aegean Sea, 29 km northeast of Santorini Island, Cyclades, South Aegean, Greece, May 1, 2025 02:09 am (GMT +3) (18 km NE)
All earthquakes at Kolumbo

Koryaksky volcano (Kamchatka): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 36 seconds, the last being recorded quake 22 hours ago. Hypocenter depths ranged between 6.60 and 4.31 km.
Earthquake details:
2.2 quake Yelizovskiy Rayon, 38 km north of Petropavlovsk-Kamchatskiy, Kamchatka, Russia, Apr 30, 2025 04:12 pm (Kamchatka time) (9 km N)
1.6 quake Yelizovskiy Rayon, 38 km north of Petropavlovsk-Kamchatskiy, Kamchatka, Russia, Apr 30, 2025 04:13 pm (Kamchatka time) (9 km N)
All earthquakes at Koryaksky

Ljósufjöll volcano (Iceland): 4 earthquakes up to magnitude 2.6

4 earthquakes occurred near (under) the volcano during 5 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 17.40 and 5.20 km.
Earthquake details:
2.6 quake 28.9 km N of Borgarnes Apr 30, 2025 04:58 pm (Universal Time) (14 km ESE)
2.0 quake Iceland: 29.1 km N of Borgarnes Apr 30, 2025 05:59 pm (Reykjavik time) (13 km ESE)
1.4 quake Iceland: 24.1 km N of Borgarnes Apr 30, 2025 02:24 pm (Reykjavik time) (19 km SE)
1.2 quake Iceland: 28.6 km N of Borgarnes Apr 30, 2025 07:02 pm (Reykjavik time) (15 km ESE)
All earthquakes at Ljósufjöll

Lokbatan volcano (Azerbaijan): 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 10.00 km depth at 5 km distance NE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 5.3 km west of Baku, Baku City, Azerbaijan, Apr 30, 2025 10:22 pm (GMT +4) (5 km NE)
All earthquakes at Lokbatan

Milos volcano (Greece): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 12 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.44 km depth at 9 km distance NW from the volcano.
Earthquake details:
2.2 quake Aegean Sea, South Aegean, 137 km southeast of Aegina Island, Attica, Greece, Apr 30, 2025 04:33 pm (GMT +3) (9 km NW)
All earthquakes at Milos

Pocdol Mountains volcano (Luzon Island): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.00 km depth at 1 km distance E from the volcano.
Earthquake details:
2.1 quake 8.8 km north of Sorsogon, Province of Sorsogon, Bicol, Philippines, Apr 30, 2025 02:04 pm (GMT +8) (1 km E)
All earthquakes at Pocdol Mountains

Ragang volcano (Mindanao): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 17 km distance E from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 5.1 km north of Wao, Philippines, May 1, 2025 01:16 am (GMT +8) (17 km E)
All earthquakes at Ragang

Santorini volcano (Greece): 2 earthquakes up to magnitude 2.3

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 35.52 and 28.61 km.
Earthquake details:
2.3 quake Aegean Sea, 21 km southwest of Santorini Island, Cyclades, South Aegean, Greece, Apr 30, 2025 10:29 pm (GMT +3) (19 km SSW)
2.0 quake Aegean Sea, 16 km northwest of Santorini Island, Cyclades, South Aegean, Greece, May 1, 2025 01:44 am (GMT +3) (12 km NW)
All earthquakes at Santorini

Sundoro volcano (Central Java): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 19 km distance WSW from the volcano.
Earthquake details:
2.1 quake 6.8 km southwest of Wonosobo, Wonosobo, Central Java, Indonesia, May 1, 2025 01:10 am (GMT +7) (19 km WSW)
All earthquakes at Sundoro

Turrialba volcano (Costa Rica): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 24.00 km depth at 5 km distance NW from the volcano.
Earthquake details:
2.9 quake Provincia de Cartago, 34 km northeast of San Jose, Costa Rica, Apr 30, 2025 04:33 am (GMT -6) (5 km NW)
All earthquakes at Turrialba JOIN US AND FOLO

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