Volcano earthquake report for Friday, 18 September 2026

Quakes detected near: Agua (1 quake mag 1.5), Balut (3 quakes between mag 1.4-2.1), Cabalian (1 quake mag 3.0), Chingo (1 quake mag 1.7), Clear Lake (18 quakes between mag 0.2-1.5), Colima (1 quake mag 2.4)
Coso (1 quake mag 1.4), El Hierro (1 quake mag 1.9), Eldey (8 quakes between mag 1.2-2.0), Etna (1 quake mag 1.6), Fani Maoré (1 quake mag 2.4), Inierie (1 quake mag 2.5), Kilauea (4 quakes between mag 0.7-2.1), Las Lajas (1 quake mag 2.0), Long Valley (1 quake mag 1.6), Maunaloa (1 quake mag 2.1), Mount Rainier (1 quake mag 1.5), Paluweh (2 quakes between mag 1.9-3.5), Prestahnukur (5 quakes between mag 1.0-1.7), Redoubt (1 quake mag 1.1), San Cristobal (14 quakes between mag 1.1-3.5), Sousaki (1 quake mag 1.4), Tecuamburro (1 quake mag 2.0), Tjörnes Fracture Zone (9 quakes between mag 0.0-1.4) (updated 13h50)\n\nNote: 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.\n
Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:

Balut volcano (Mindanao): 3 earthquakes up to magnitude 2.1

3 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 33.00 and 27.00 km.
Earthquake details:
2.1 quake Celebes Sea, 28 km west of Sarangani, Davao Occidental, Davao, Philippines, Sep 18, 2026 03:46 am (GMT +8) (19 km WSW)
1.9 quake Philippine Sea, 7.4 km west of Sarangani Island, Philippines, Sep 18, 2026 02:03 pm (GMT +8) (7 km NNE)
1.4 quake Celebes Sea, 21 km west of Sarangani Island, Philippines, 18 September 2026 - 12:19 AM (PST) (10 km WNW)
All earthquakes at Balut
Balut is an 840 m island stratovolcano south of Mindanao whose last known eruption occurred between about 2 million and 11,700 years ago. Hot springs and thermally altered ground occur on its western and southwestern flanks.

Cabalian volcano (Central Philippines): 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 2.00 km depth at 2 km distance NE from the volcano.
Earthquake details:
3.0 quake Province of Southern Leyte, Eastern Visayas, 39 km west of San Jose, Philippines, Sep 18, 2026 07:30 pm (GMT +8) (2 km NE)
All earthquakes at Cabalian
Cabalían is a 912 m-high stratovolcano on southeastern Leyte, distinguished by its lake-filled summit crater. Radiocarbon evidence records an eruption around 1820, with an uncertainty of about 30 years.

Clear Lake volcano (California): 18 earthquakes up to magnitude 1.5

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 31 minutes ago. Hypocenter depths ranged between 13.12 and 1.15 km.
Earthquake details: (only 5 largest)
1.5 quake 12 mi southwest of Clearlake, Lake County, California, United States, Sep 18, 2026 08:53 am (Universal Time) (16 km S)
1.4 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Sep 18, 2026 11:38 am (Universal Time) (19 km S)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 17, 2026 02:06 pm (Universal Time) (17 km S)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Sep 18, 2026 03:08 am (Universal Time) (16 km SSW)
1.0 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 18, 2026 08:10 am (Universal Time) (16 km S)
All earthquakes at Clear Lake

Colima volcano (Western & Central Mexico): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 18.90 km depth at 17 km distance N from the volcano.
Earthquake details:
2.4 quake 15 km west of Ciudad Guzman, Estado de Jalisco, Mexico, Sep 17, 2026 11:31 am (GMT -6) (17 km N)
All earthquakes at Colima
Colima, or Volcán de Fuego, is a frequently erupting stratovolcano in western Mexico. Its history includes summit-destroying explosions, lava-dome growth, pyroclastic flows and a confirmed eruption in 2019.

Fani Maoré volcano (Indian Ocean): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 1 hour 18 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 42.09 km depth at 7 km distance W from the volcano.
Earthquake details:
2.4 quake 48 km east of Mamoudzou, Mamoudzou, Mayotte, Sep 18, 2026 03:31 pm (GMT +3) (7 km W)
All earthquakes at Fani Maoré
Fani Maoré is a submarine volcano about 50 km east of Mayotte. Seismic unrest began in May 2018, and surveys in 2019 discovered a new 800-m-high cone and extensive lava flows on the seafloor.

Inierie volcano (Flores): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 43.00 km depth at 9 km distance E from the volcano.
Earthquake details:
2.5 quake Kabupaten Ngada, 70 km west of Ende, Indonesia, Sep 18, 2026 07:02 am (GMT +8) (9 km E)
All earthquakes at Inierie
Inierie is a 2,245-m-high stratovolcano and the highest volcano on Flores. Its last eruption is uncertain; an event dated to about 8050 BCE occurred at Wolo Bobo on its northeastern side.

Kilauea volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.1

4 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 12 hours ago. Hypocenter depths ranged between 1.68 and 0.04 km.
Earthquake details:
2.1 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 17, 2026 04:18 am (GMT -10) (1 km E)
1.9 quake 4.7 mi southwest of Volcano, Hawaii County, Hawaii, United States, Sep 17, 2026 09:03 pm (Universal Time) (4 km SSE)
1.6 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 17, 2026 02:17 pm (Universal Time) (1 km E)
0.7 quake 27 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 18, 2026 02:04 am (Universal Time) (4 km SSE)
All earthquakes at Kilauea

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 39.06 km depth at 4 km distance SSE from the volcano.
Earthquake details:
2.1 quake 39 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 17, 2026 07:18 am (GMT -10) (4 km SSE)
All earthquakes at Maunaloa
Maunaloa is a huge, frequently active shield volcano on Hawaiʻi’s Big Island. Its predominantly lava-producing eruptions include a well-documented episode in November–December 2022.

Paluweh volcano (Lesser Sunda Islands): 2 earthquakes up to magnitude 3.5

2 earthquakes occurred near (under) the volcano during 12 minutes, the last being recorded quake 21 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
3.5 quake Flores Sea, 53 km north of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia, Sep 18, 2026 12:30 am (GMT +8) (18 km WSW)
1.9 quake Flores Sea, 54 km north of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia, Sep 18, 2026 12:42 am (GMT +8) (12 km WSW)
All earthquakes at Paluweh
Paluweh is an island-forming stratovolcano north of Flores, Indonesia. Its major eruptions include a destructive, tsunami-producing event in 1928 and deadly pyroclastic flows in 2013.

San Cristobal volcano (Nicaragua): 14 earthquakes up to magnitude 3.5

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 9.00 and 3.00 km.
Earthquake details: (only 5 largest)
3.5 quake 22 km east of Chinandega, Departamento de Chinandega, Nicaragua, Sep 17, 2026 11:24 pm (GMT -6) (6 km E)
3.4 quake 20 km east of Chinandega, Departamento de Chinandega, Nicaragua, Sep 17, 2026 09:44 am (GMT -6) (5 km E)
2.7 quake 21 km east of Chinandega, Departamento de Chinandega, Nicaragua, Sep 17, 2026 12:10 pm (GMT -6) (6 km E)
2.1 quake 21 km east of Chinandega, Departamento de Chinandega, Nicaragua, Sep 17, 2026 11:17 am (GMT -6) (6 km ESE)
1.8 quake 20 km east of Chinandega, Departamento de Chinandega, Nicaragua, Sep 17, 2026 11:29 pm (GMT -6) (6 km ESE)
All earthquakes at San Cristobal
San Cristóbal, or El Viejo, is Nicaragua’s highest volcano. Its documented history extends back to about 1528, with recurring explosions and ashfall continuing into June 2024.
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