Volcano earthquake report for Wednesday, 1 Apr 2026
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 1 Apr 2026 Number in brackets indicate nr of quakes.

Quakes detected near: Apoyeque (1 quake mag 1.7), Askja (3 quakes between mag 0.0-1.2), Barva (1 quake mag 2.1), Campi Flegrei (Phlegrean Fields) (2 quakes between mag 0.2-1.2), Clear Lake (31 quakes between mag 0.2-2.1), El Chichón (4 quakes between mag 1.9-3.0)
Grímsvötn (3 quakes between mag 0.7-1.2), Hayes (1 quake mag 1.0), Hrómundartindur (18 quakes between mag 0.0-3.0), Hulubelu (3 quakes between mag 2.5-2.5), Kerlingarfjöll (1 quake mag 1.1), Kilauea (1 quake mag 1.9), Kupreanof (3 quakes between mag 1.3-2.6), Loihi (2 quakes between mag 2.1-2.1), Loki-Fögrufjöll volcano (4 quakes between mag 0.1-1.2), Maunaloa (1 quake mag 2.2), Mayotte Island (2 quakes between mag 1.2-1.5), Pico (1 quake mag 2.1), Pinatubo (1 quake mag 1.7), Salton Buttes (2 quakes between mag 1.6-2.1), Sousaki (1 quake mag 2.1), Stepovak Bay 4 (2 quakes between mag 1.4-2.3), Tenerife (7 quakes between mag 0.9-1.7), Whale Island (1 quake mag 1.8) (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:



Barva volcano (Costa Rica): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 16.00 km depth at 15 km distance ENE from the volcano.
Earthquake details:
2.1 quake Provincia de Heredia, 31 km northeast of San Jose, Costa Rica, Apr 1, 2026 01:14 am (Costa_Rica time) (15 km ENE)
All earthquakes at Barva

Clear Lake volcano (California): 31 earthquakes up to magnitude 2.1

Possible earthquake swarm: 31 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 54 minutes ago. Hypocenter depths ranged between 33.24 and 0.65 km.
Earthquake details: (only 5 largest)
2.1 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Apr 1, 2026 03:34 am (GMT -7) (16 km SSW)
1.9 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2026 06:54 pm (GMT -7) (19 km SSW)
1.6 quake 12 mi southwest of Clearlake, Lake County, California, United States, Mar 31, 2026 07:05 pm (GMT -7) (15 km S)
1.5 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Apr 1, 2026 04:46 am (GMT -7) (18 km S)
1.3 quake Lake County, 26 mi north of Santa Rosa, Sonoma County, California, United States, Mar 31, 2026 11:17 pm (GMT -7) (17 km S)
All earthquakes at Clear Lake

El Chichón volcano (Southern Mexico): 4 earthquakes up to magnitude 3.0

4 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 14 hours ago. Hypocenter depths ranged between 3.20 and 2.20 km.
Earthquake details:
3.0 quake Estado de Chiapas, 37 km southwest of Teapa, Estado de Tabasco, Mexico, Apr 1, 2026 04:18 am (GMT -6) (1 km WSW)
2.7 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, Mar 31, 2026 07:55 pm (GMT -6) (1 km E)
2.5 quake Estado de Chiapas, 37 km southwest of Teapa, Estado de Tabasco, Mexico, Apr 1, 2026 01:12 am (GMT -6) (1 km SW)
1.9 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, Apr 1, 2026 01:09 am (GMT -6) (1 km ESE)
All earthquakes at El Chichón

Hrómundartindur volcano (Iceland): 18 earthquakes up to magnitude 3.0

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 8.50 and 2.40 km.
Earthquake details: (only 5 largest)
3.0 quake 37 km southeast of Reykjavik, Capital Region, Iceland, Apr 1, 2026 06:49 pm (Reykjavik time) (13 km SSW)
2.3 quake 4.2 km NE of Skeggi_á_Hengli Apr 1, 2026 07:11 pm (Universal Time) (5 km NNW)
1.6 quake Iceland: 3.5 km NW of Hrómundartindi Apr 1, 2026 07:12 pm (Reykjavik time) (4 km NW)
1.4 quake 1.7 km E of Skeggi_á_Hengli Apr 1, 2026 06:52 pm (Universal Time) (5 km WNW)
1.3 quake 3.6 km NE of Skeggi_á_Hengli Apr 1, 2026 06:53 pm (Universal Time) (5 km NW)
All earthquakes at Hrómundartindur

Hulubelu volcano (Sumatra): 3 earthquakes up to magnitude 2.5

3 earthquakes occurred near (under) the volcano during 8 minutes, the last being recorded quake 18 hours ago. Hypocenter depths ranged between 4.00 and 3.00 km.
Earthquake details:
2.5 quake Kabupaten Tanggamus, 74 km west of Bandar Lampung, Indonesia, Apr 1, 2026 01:01 pm (GMT +7) (9 km S)
2.5 quake Kabupaten Tanggamus, 78 km west of Bandar Lampung, Indonesia, Apr 1, 2026 12:59 pm (GMT +7) (13 km S)
2.5 quake Kabupaten Tanggamus, 75 km west of Bandar Lampung, Indonesia, Apr 1, 2026 12:53 pm (GMT +7) (2 km SSE)
All earthquakes at Hulubelu

Kupreanof volcano (Alaska Peninsula): 3 earthquakes up to magnitude 2.6

3 earthquakes occurred near (under) the volcano during 15 hours, the last being recorded quake 32 minutes ago. Hypocenter depths ranged between 48.10 and 15.10 km.
Earthquake details:
2.6 quake Lake and Peninsula Borough, 61 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Apr 1, 2026 03:00 pm (GMT -8) (13 km ENE)
1.5 quake Lake and Peninsula Borough, 53 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Apr 1, 2026 03:18 pm (GMT -8) (8 km SE)
1.3 quake Lake and Peninsula Borough, 54 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Mar 31, 2026 11:54 pm (GMT -8) (9 km ESE)
All earthquakes at Kupreanof

Loihi volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 31.66 and 31.60 km.
Earthquake details:
2.1 quake North Pacific Ocean, 40 mi southeast of of Hawai‘i Island, Hawaii County, Hawaii, United States, Apr 1, 2026 04:35 am (GMT -10) (18 km NW)
2.1 quake North Pacific Ocean, 12 mi southeast of Pāhala, Hawaii County, Hawaii, United States, Mar 31, 2026 03:22 pm (GMT -10) (19 km NW)
All earthquakes at Loihi

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 3.65 km depth at 11 km distance E from the volcano.
Earthquake details:
2.2 quake 32 mi southwest of Hilo, Hawaii County, Hawaii, United States, Apr 1, 2026 02:30 am (GMT -10) (11 km E)
All earthquakes at Maunaloa

Pico volcano (Azores): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.00 km depth at 16 km distance NW from the volcano.
Earthquake details:
2.1 quake North Atlantic Ocean, 19 km northwest of Pico Island, Azores, Portugal, Apr 1, 2026 08:50 pm (Universal Time) (16 km NW)
All earthquakes at Pico

Salton Buttes volcano (California): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 33 seconds, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 3.54 and 3.31 km.
Earthquake details:
2.1 quake 14 mi northwest of Brawley, Imperial County, California, United States, Apr 1, 2026 01:04 am (GMT -7) (5 km SSW)
1.6 quake 14 mi northwest of Brawley, Imperial County, California, United States, Apr 1, 2026 01:04 am (GMT -7) (4 km SSW)
All earthquakes at Salton Buttes

Sousaki volcano (Greece): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.69 km depth at 12 km distance SSE from the volcano.
Earthquake details:
2.1 quake Aegean Sea, 54 km west of Athens, Nomarchia Athinas, Attica, Greece, Apr 1, 2026 11:21 pm (GMT +3) (12 km SSE)
All earthquakes at Sousaki

Stepovak Bay 4 volcano (Alaska Peninsula): 2 earthquakes up to magnitude 2.3

2 earthquakes occurred near (under) the volcano during 18 minutes, the last being recorded quake 20 hours ago. Hypocenter depths ranged between 10.10 and 8.50 km.
Earthquake details:
2.3 quake Lake and Peninsula Borough, 49 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Mar 31, 2026 07:41 pm (GMT -8) (11 km ESE)
1.4 quake Lake and Peninsula Borough, 49 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Mar 31, 2026 08:00 pm (GMT -8) (9 km ESE)
All earthquakes at Stepovak Bay 4
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