Volcano earthquake report for Tuesday, 12 May 2026

Quakes detected near: Bardarbunga (28 quakes between mag 0.0-2.1), Bibinoi (1 quake mag 2.3), Campi Flegrei (Phlegrean Fields) (2 quakes between mag 1.2-1.8), Cerro Singüil (1 quake mag 3.0), Churchill (1 quake mag 1.2), Clear Lake (25 quakes between mag 0.3-2.0)
El Chichón (1 quake mag 2.1), Eldey (6 quakes between mag 0.2-1.7), Endeavour Ridge (1 quake mag 2.8), Grímsvötn (7 quakes between mag 0.4-1.0), Katla (3 quakes between mag 0.1-1.0), Kilauea (2 quakes between mag 1.8-2.2), Kolumbo (2 quakes between mag 1.5-1.6), Ljósufjöll (2 quakes between mag 0.1-1.2), Maunaloa (5 quakes between mag 1.6-2.3), Prestahnukur (27 quakes between mag 0.3-2.9), Sandal (1 quake mag 1.0), Seulawah Agam (1 quake mag 2.4), Stepovak Bay 4 (2 quakes between mag 1.2-2.6), Tenerife (2 quakes between mag 1.0-1.3), Tjörnes Fracture Zone (5 quakes between mag 0.4-1.2) (updated 13h50)

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:

Bardarbunga volcano (Iceland): 28 earthquakes up to magnitude 2.1

Possible earthquake swarm: 28 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 53 minutes ago. Hypocenter depths ranged between 15.50 and 0.00 km.
Earthquake details: (only 5 largest)
2.1 quake Iceland: 8.2 km SE of Bárðarbunga May 11, 2026 03:23 pm (Reykjavik time) (8 km SE)
2.0 quake 5.5 km ENE of Bárðarbunga May 12, 2026 06:31 am (Universal Time) (6 km NE)
1.1 quake Iceland: 2.9 km ESE of Bárðarbunga May 12, 2026 03:34 am (Reykjavik time) (3 km E)
0.9 quake 2.7 km SE of Bárðarbunga May 11, 2026 03:55 pm (Universal Time) (2 km ESE)
0.8 quake Iceland: 2.7 km N of Bárðarbunga May 12, 2026 03:34 am (Reykjavik time) (4 km N)
All earthquakes at Bardarbunga

Bibinoi volcano (Halmahera): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.00 km depth at 11 km distance WNW from the volcano.
Earthquake details:
2.3 quake 21 km southeast of Labuha, Kabupaten Halmahera Selatan, North Maluku, Indonesia, May 12, 2026 09:30 am (GMT +9) (11 km WNW)
All earthquakes at Bibinoi

Cerro Singüil volcano (El Salvador): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 12 km distance ESE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 0.7 km northwest of Santa Ana, Departamento de Santa Ana, El Salvador, May 11, 2026 03:11 pm (GMT -6) (12 km ESE)
All earthquakes at Cerro Singüil

Clear Lake volcano (California): 25 earthquakes up to magnitude 2.0

Possible earthquake swarm: 25 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 1 hour 1 minutes ago. Hypocenter depths ranged between 12.01 and 1.04 km.
Earthquake details: (only 5 largest)
2.0 quake Sonoma County, 13 mi southwest of Clearlake, Lake County, California, United States, May 11, 2026 10:40 am (GMT -7) (16 km SSW)
1.5 quake Sonoma County, 13 mi southwest of Clearlake, Lake County, California, United States, May 11, 2026 10:03 pm (GMT -7) (17 km S)
1.3 quake Lake County, 28 mi north of Santa Rosa, Sonoma County, California, United States, May 11, 2026 06:26 pm (GMT -7) (15 km S)
1.3 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, May 11, 2026 03:39 pm (GMT -7) (18 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, May 11, 2026 08:09 pm (GMT -7) (17 km SSW)
All earthquakes at Clear Lake

El Chichón volcano (Southern Mexico): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.90 km depth at 1 km distance E from the volcano.
Earthquake details:
2.1 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, May 11, 2026 09:31 am (GMT -6) (1 km E)
All earthquakes at El Chichón

Endeavour Ridge volcano (Northern Pacific Ocean): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 19 km distance E from the volcano.
Earthquake details:
2.8 quake 254 km WSW of Tofino, Canada, May 12, 2026 02:34 am (GMT -9) (19 km E)
All earthquakes at Endeavour Ridge

Kilauea volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 1 hour 50 minutes ago. Hypocenter depths ranged between 7.47 and 0.72 km.
Earthquake details:
2.2 quake 28 mi south of Hilo, Hawaii County, Hawaii, United States, May 11, 2026 06:14 pm (GMT -10) (12 km SE)
1.8 quake 26 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 12, 2026 02:00 am (GMT -10) (1 km E)
All earthquakes at Kilauea

Maunaloa volcano (Hawai'i (Big Island)): 5 earthquakes up to magnitude 2.3

5 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 1 hour 2 minutes ago. Hypocenter depths ranged between 9.27 and 0.40 km.
Earthquake details:
2.3 quake 36 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 11, 2026 02:15 pm (GMT -10) (18 km SE)
2.2 quake 36 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 11, 2026 02:31 pm (GMT -10) (18 km SE)
2.1 quake 30 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 12, 2026 02:47 am (GMT -10) (16 km E)
1.7 quake 38 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 11, 2026 07:13 am (GMT -10) (2 km SE)
1.6 quake 10.8 mi north of Pāhala, Hawaii County, Hawaii, United States, May 11, 2026 01:53 pm (GMT -10) (18 km SE)
All earthquakes at Maunaloa

Prestahnukur volcano (Iceland): 27 earthquakes up to magnitude 2.9

Possible earthquake swarm: 27 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 19.30 and 2.70 km.
Earthquake details: (only 5 largest)
2.9 quake West, 71 km northeast of Reykjavik, Capital Region, Iceland, May 11, 2026 02:24 pm (Universal Time) (12 km WSW)
1.8 quake Iceland: 16.2 km S of Húsafell May 12, 2026 01:53 am (Reykjavik time) (14 km WSW)
1.8 quake Iceland: 16.8 km SSE of Húsafell May 12, 2026 06:49 am (Reykjavik time) (8 km SW)
1.7 quake 14.6 km SSE of Húsafell May 11, 2026 09:32 pm (Universal Time) (11 km WSW)
1.7 quake 16.7 km SSE of Húsafell May 11, 2026 10:10 pm (Universal Time) (8 km SW)
All earthquakes at Prestahnukur

Seulawah Agam volcano (Sumatra): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 24 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 4.00 km depth at 6 km distance S from the volcano.
Earthquake details:
2.4 quake Kabupaten Aceh Besar, 40 km southeast of Banda Aceh, Indonesia, May 12, 2026 08:26 pm (GMT +7) (6 km S)
All earthquakes at Seulawah Agam

Stepovak Bay 4 volcano (Alaska Peninsula): 2 earthquakes up to magnitude 2.6

2 earthquakes occurred near (under) the volcano during 10 minutes, the last being recorded quake 23 hours ago. Hypocenter depths ranged between 5.54 and 5.00 km.
Earthquake details:
2.6 quake 52 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, May 11, 2026 07:08 am (GMT -8) (6 km N)
1.2 quake Lake and Peninsula Borough, 48 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, May 11, 2026 06:58 am (GMT -8) (13 km ESE)
All earthquakes at Stepovak Bay 4
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