Volcano earthquake report for Monday, 18 May 2026

Quakes detected near: Agua (1 quake mag 2.9), Apaneca Range (2 quakes between mag 1.6-1.8), Askja (9 quakes between mag 0.1-1.6), Bardarbunga (16 quakes between mag 0.0-2.1), Barva (1 quake mag 1.7), Biliran (2 quakes between mag 1.9-2.0)
Campi Flegrei (Phlegrean Fields) (18 quakes between mag 0.1-2.3), Clear Lake (16 quakes between mag 0.4-1.4), Coso (2 quakes between mag 0.7-1.0), El Chichón (2 quakes between mag 2.2-2.4), Eldey (10 quakes between mag 0.4-1.6), Etna (1 quake mag 3.0), Grímsvötn (4 quakes between mag 0.0-1.9), Hofsjökull (5 quakes between mag 0.9-1.7), Hrómundartindur (4 quakes between mag 0.2-1.0), Iriomote-jima (2 quakes between mag 4.4-4.8), Katla (10 quakes between mag 0.1-1.6), Kilauea (2 quakes between mag 2.1-2.4), Kolumbo (1 quake mag 1.6), La Palma (2 quakes between mag 1.7-2.0), Ljósufjöll (9 quakes between mag 0.0-1.4), Makaturing (2 quakes between mag 1.8-2.8), Mammoth Mountain (3 quakes between mag 0.3-1.4), Martin (1 quake mag 1.0), Poas (1 quake mag 1.9), Prestahnukur (13 quakes between mag 0.5-1.9), Reporoa (1 quake mag 1.9), Santo Tomas (1 quake mag 1.3), Stepovak Bay 4 (1 quake mag 2.5), Svartsengi (1 quake mag 1.0), Talakmau (1 quake mag 2.2), Tambora (1 quake mag 3.4), Taupo (1 quake mag 1.8), Tenerife (4 quakes between mag 1.4-1.5), Whale Island (1 quake mag 2.5) (updated 05h50)

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:

Agua volcano (Guatemala): magnitude 2.9 earthquake

A magnitude 2.9 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 6 km distance ESE from the volcano.
Earthquake details:
2.9 quake 4.1 km north of Palin, Departamento de Escuintla, Guatemala, May 17, 2026 03:33 pm (GMT -6) (6 km ESE)
All earthquakes at Agua

Bardarbunga volcano (Iceland): 16 earthquakes up to magnitude 2.1

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 11 minutes ago. Hypocenter depths ranged between 6.10 and 0.00 km.
Earthquake details: (only 5 largest)
2.1 quake 1.8 km NE of Bárðarbunga May 17, 2026 10:38 pm (Universal Time) (3 km NE)
1.4 quake 4.7 km ESE of Bárðarbunga May 17, 2026 04:57 pm (Universal Time) (4 km ESE)
1.0 quake 3.5 km ESE of Bárðarbunga May 18, 2026 01:39 am (Universal Time) (3 km E)
0.8 quake 2.8 km E of Bárðarbunga May 18, 2026 04:39 am (Universal Time) (3 km ENE)
0.6 quake Iceland: 1.8 km N of Bárðarbunga May 17, 2026 10:40 pm (Reykjavik time) (3 km N)
All earthquakes at Bardarbunga

Campi Flegrei (Phlegrean Fields) volcano (Italy): 18 earthquakes up to magnitude 2.3

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 8 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 7.75 and 0.72 km.
Earthquake details: (only 5 largest)
2.3 quake 11 km west of Naples, Napoli, Campania, Italy, May 18, 2026 12:57 am (GMT +2) (5 km NW)
1.3 quake 2.4 km southeast of Pozzuoli, Napoli, Campania, Italy, May 18, 2026 01:58 am (GMT +2) (2 km WNW)
0.5 quake 12 km west of Naples, Napoli, Campania, Italy, May 18, 2026 12:54 am (GMT +2) (1 km SW)
0.5 quake 4.4 km southeast of Pozzuoli, Napoli, Campania, Italy, May 18, 2026 01:01 am (GMT +2) (0 km ESE)
0.3 quake 10.9 km west of Naples, Napoli, Campania, Italy, May 17, 2026 10:55 pm (Universal Time) (0 km E)
All earthquakes at Campi Flegrei (Phlegrean Fields)

Clear Lake volcano (California): 16 earthquakes up to magnitude 1.4

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 4.84 and 0.21 km.
Earthquake details: (only 5 largest)
1.4 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, May 17, 2026 12:02 am (GMT -7) (19 km S)
1.1 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, May 17, 2026 12:28 pm (GMT -7) (19 km SSW)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, May 17, 2026 07:27 am (GMT -7) (17 km S)
0.9 quake Lake County, 28 mi north of Santa Rosa, Sonoma County, California, United States, May 17, 2026 04:58 am (GMT -7) (15 km S)
0.8 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, May 17, 2026 11:25 am (GMT -7) (16 km SSW)
All earthquakes at Clear Lake

El Chichón volcano (Southern Mexico): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 3.00 and 3.00 km.
Earthquake details:
2.4 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, May 17, 2026 07:38 am (GMT -6) (1 km NNE)
2.2 quake Estado de Chiapas, 36 km southwest of Teapa, Estado de Tabasco, Mexico, May 17, 2026 11:31 am (GMT -6) (2 km NNW)
All earthquakes at El Chichón

Etna volcano (Italy): magnitude 3.0 earthquake

A magnitude 3.0 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 0 km distance SW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 30 km north of Catania, Catania, Sicily, Italy, May 18, 2026 05:41 am (GMT +2) (0 km SW)
All earthquakes at Etna

Iriomote-jima volcano (Ryukyu Islands): 2 earthquakes up to magnitude 4.8

2 earthquakes occurred near (under) the volcano during 3 minutes, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
4.8 quake East China Sea, 13 km north of Iriomote Jima Island, Okinawa, Japan, May 18, 2026 08:21 am (GMT +9) (19 km SW)
4.4 quake East China Sea, 20 km north of Iriomote Jima Island, Okinawa, Japan, May 18, 2026 08:24 am (GMT +9) (12 km WSW)
All earthquakes at Iriomote-jima

Kilauea volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.4

2 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 7.69 and 2.68 km.
Earthquake details:
2.4 quake 33 mi southwest of Hilo, Hawaii County, Hawaii, United States, May 16, 2026 10:11 pm (GMT -10) (15 km WSW)
2.1 quake 29 mi south of Hilo, Hawaii County, Hawaii, United States, May 17, 2026 11:05 am (GMT -10) (12 km SE)
All earthquakes at Kilauea

Makaturing volcano (Mindanao): 2 earthquakes up to magnitude 2.8

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 24.00 and 5.00 km.
Earthquake details:
2.8 quake Province of Lanao del Sur, 50 km north of Cotabato, Philippines, May 17, 2026 09:36 pm (GMT +8) (7 km E)
1.8 quake 31 km south of Marawi City, Philippines, May 17, 2026 07:06 pm (GMT +8) (14 km NW)
All earthquakes at Makaturing

Prestahnukur volcano (Iceland): 13 earthquakes up to magnitude 1.9

Possible earthquake swarm: 13 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 1 hour 14 minutes ago. Hypocenter depths ranged between 18.60 and 0.00 km.
Earthquake details: (only 5 largest)
1.9 quake Iceland: 15.9 km S of Húsafell May 17, 2026 08:07 am (Reykjavik time) (14 km WSW)
1.7 quake Iceland: 16.6 km S of Húsafell May 17, 2026 09:59 pm (Reykjavik time) (16 km WSW)
1.4 quake Iceland: 16.1 km SSE of Húsafell May 17, 2026 07:01 pm (Reykjavik time) (11 km WSW)
1.2 quake Iceland: 15.2 km SSE of Húsafell May 18, 2026 02:02 am (Reykjavik time) (10 km WSW)
1.2 quake Iceland: 15.4 km S of Húsafell May 17, 2026 04:38 pm (Reykjavik time) (13 km WSW)
All earthquakes at Prestahnukur

Stepovak Bay 4 volcano (Alaska Peninsula): 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 5.00 km depth at 17 km distance NNW from the volcano.
Earthquake details:
2.5 quake 56 mi north of Sand Point, Aleutians East Borough, Alaska, United States, May 17, 2026 08:02 am (GMT -8) (17 km NNW)
All earthquakes at Stepovak Bay 4

Talakmau volcano (Sumatra): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.00 km depth at 2 km distance ESE from the volcano.
Earthquake details:
2.2 quake Kabupaten Pasaman, 59 km northwest of Bukittinggi, Indonesia, May 17, 2026 10:27 pm (GMT +7) (2 km ESE)
All earthquakes at Talakmau

Tambora volcano (Sumbawa): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 23.00 km depth at 15 km distance SSE from the volcano.
Earthquake details:
3.4 quake 49 km west of Dompu, Kabupaten Dompu, West Nusa Tenggara, Indonesia, May 18, 2026 03:47 am (GMT +8) (15 km SSE)
All earthquakes at Tambora

Whale Island volcano (New Zealand): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 47.30 km depth at 15 km distance ENE from the volcano.
Earthquake details:
2.5 quake South Pacific Ocean, 22 km northeast of Whakatane, Bay of Plenty, New Zealand, May 18, 2026 02:02 pm (GMT +12) (15 km ENE)
All earthquakes at Whale Island
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/302739/Volcano-earthquake-report-for-Monday-18-May-2026.html