Volcano earthquake report for Saturday, 12 September 2026

Quakes detected near: Acatenango (2 quakes between mag 1.2-1.6), Agua (1 quake mag 1.7), Akita-Yake-yama (1 quake mag 2.5), Askja (5 quakes between mag 0.0-1.1), Balut (6 quakes between mag 1.5-2.7), Bardarbunga (4 quakes between mag 0.6-1.9)
Clear Lake (39 quakes between mag 0.3-2.9), Etna (2 quakes between mag 0.9-1.1), Flores (3 quakes between mag 1.4-2.7), Galeras (1 quake mag 3.0), Ipala (1 quake mag 1.8), Kalatungan (3 quakes between mag 1.4-1.6), Kilauea (6 quakes between mag 1.7-2.7), Kolumbo (1 quake mag 1.7), Loihi (1 quake mag 1.9), Maunaloa (4 quakes between mag 1.7-2.2), Methana (1 quake mag 1.1), Mount Rainier (1 quake mag 1.6), Paluweh (1 quake mag 3.4), Prestahnukur (8 quakes between mag 0.4-2.0), Salton Buttes (1 quake mag 1.1), Spurr (1 quake mag 1.2), Stepovak Bay 2 (1 quake mag 2.1), Svartsengi (1 quake mag 1.0), Tecuamburro (1 quake mag 1.7), Terceira (1 quake mag 2.6), Washiba-Kumonotaira (1 quake mag 2.7), White Island (1 quake mag 2.3), Öraefajökull (2 quakes between mag 0.5-1.1) (updated 21h50)\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:

Akita-Yake-yama volcano (Honshu): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.80 km depth at 16 km distance W from the volcano.
Earthquake details:
2.5 quake 32 km south of Odate, Akita, Japan, Sep 12, 2026 12:11 pm (GMT +9) (16 km W)
All earthquakes at Akita-Yake-yama
Akita-Yake-yama is a stratovolcano in northwestern Honshu whose summit crater contains the Onigajo lava dome. Its last magmatic eruption was about 5,000 years ago, followed by smaller steam-driven eruptions as recently as 1997.

Balut volcano (Mindanao): 6 earthquakes up to magnitude 2.7

6 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 41.00 and 5.00 km.
Earthquake details: (only 5 largest)
2.7 quake Celebes Sea, 29 km west of Sarangani, Davao Occidental, Davao, Philippines, Sep 12, 2026 11:29 pm (GMT +8) (19 km WSW)
2.0 quake Celebes Sea, 25 km southwest of Sarangani Island, Philippines, Sep 13, 2026 01:29 am (GMT +8) (13 km SW)
2.0 quake Celebes Sea, 25 km west of Sarangani Island, Philippines, Sep 13, 2026 12:22 am (GMT +8) (13 km W)
1.9 quake Celebes Sea, 19 km west of Sarangani Island, Philippines, Sep 12, 2026 11:14 pm (GMT +8) (10 km WNW)
1.9 quake Philippine Sea, 18 km northwest of Sarangani Island, Philippines, Sep 12, 2026 10:47 pm (GMT +8) (18 km N)
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.

Clear Lake volcano (California): 39 earthquakes up to magnitude 2.9

Possible earthquake swarm: 39 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 17 minutes ago. Hypocenter depths ranged between 4.06 and 0.72 km.
Earthquake details: (only 5 largest)
2.9 quake Lake County, 26 mi north of Santa Rosa, Sonoma County, California, United States, Sep 12, 2026 11:39 am (GMT -7) (17 km S)
1.8 quake Sonoma County, 15 mi southwest of Clearlake, Lake County, California, United States, Sep 12, 2026 01:23 pm (GMT -7) (19 km SSW)
1.8 quake Sonoma County, 15 mi southwest of Clearlake, Lake County, California, United States, Sep 12, 2026 12:50 pm (GMT -7) (19 km SSW)
1.7 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Sep 12, 2026 02:08 am (GMT -7) (15 km SSW)
1.4 quake Lake County, 27 mi north of Santa Rosa, Sonoma County, California, United States, Sep 12, 2026 12:01 pm (GMT -7) (16 km S)
All earthquakes at Clear Lake

Flores volcano (Guatemala): 3 earthquakes up to magnitude 2.7

3 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 14.00 and 12.80 km.
Earthquake details:
2.7 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 12, 2026 08:33 am (GMT -6) (14 km WNW)
2.1 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 12, 2026 01:32 am (GMT -6) (15 km WNW)
1.4 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Sep 11, 2026 11:06 pm (GMT -6) (15 km WNW)
All earthquakes at Flores
Flores, also known as Volcán Amayo, is a volcanic field about 10 km west of Jutiapa in southeastern Guatemala. Its last eruption is undated, and none are known from approximately the past 11,700 years.

Galeras volcano (Colombia): 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 7.00 km depth at 7 km distance NE from the volcano.
Earthquake details:
3.0 quake 6.8 km northwest of Pasto, Departamento de Narino, Colombia, Sep 12, 2026 02:41 pm (GMT -5) (7 km NE)
All earthquakes at Galeras

Kilauea volcano (Hawai'i (Big Island)): 6 earthquakes up to magnitude 2.7

6 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 29.95 and 0.34 km.
Earthquake details: (only 5 largest)
2.7 quake 27 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 11, 2026 11:38 pm (GMT -10) (4 km SSE)
2.6 quake 26 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 11, 2026 11:38 pm (GMT -10) (4 km SSE)
2.2 quake 13 mi southwest of Volcano, Hawaii County, Hawaii, United States, Sep 12, 2026 07:55 am (GMT -10) (16 km SSW)
2.0 quake 27 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 12, 2026 08:34 am (GMT -10) (4 km S)
1.9 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 12, 2026 01:47 am (GMT -10) (1 km SE)
All earthquakes at Kilauea

Maunaloa volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.2

4 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 40.22 and 6.38 km.
Earthquake details:
2.2 quake 40 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 11, 2026 03:05 pm (GMT -10) (5 km S)
2.1 quake 38 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 12, 2026 04:02 am (GMT -10) (5 km SSE)
2.1 quake 12 mi north of Pāhala, Hawaii County, Hawaii, United States, Sep 11, 2026 09:55 pm (GMT -10) (16 km SE)
1.7 quake 45 mi southwest of Hilo, Hawaii County, Hawaii, United States, Sep 12, 2026 04:02 am (GMT -10) (13 km SSW)
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): magnitude 3.4 earthquake

A magnitude 3.4 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 11.00 km depth at 16 km distance W from the volcano.
Earthquake details:
3.4 quake Flores Sea, 57 km north of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia, Sep 12, 2026 08:20 pm (GMT +8) (16 km W)
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.

Stepovak Bay 2 volcano (Alaska Peninsula): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.50 km depth at 11 km distance SSE from the volcano.
Earthquake details:
2.1 quake 40 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Sep 12, 2026 07:41 am (GMT -8) (11 km SSE)
All earthquakes at Stepovak Bay 2
Stepovak Bay 2 is part of a four-cone volcanic field on the Alaska Peninsula. Its andesitic lava flow formed sometime within approximately the past 11,700 years, but no dated eruption has been identified.

Terceira volcano (Azores): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 12 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.00 km depth at 19 km distance SW from the volcano.
Earthquake details:
2.6 quake North Atlantic Ocean, 25 km southwest of Terceira Island, Azores, Portugal, Sep 12, 2026 10:03 am (Universal Time) (19 km SW)
All earthquakes at Terceira
Terceira is an active volcanic island in the Azores with a geological eruption record extending back more than 8,000 years. Its 1998–2000 submarine eruption produced unusual floating lava balloons west of the island.

Washiba-Kumonotaira volcano (Honshu): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 3.30 km depth at 1 km distance SE from the volcano.
Earthquake details:
2.7 quake 51 km southeast of Toyama, Toyama, Japan, Sep 13, 2026 01:03 am (GMT +9) (1 km SE)
All earthquakes at Washiba-Kumonotaira
Washiba-Kumonotaira is a remote cluster of small shield volcanoes in Japan’s Northern Alps. Its youngest known feature is Washiba-ike crater, but no eruption during approximately the past 11,700 years has been confirmed.

White Island volcano (New Zealand): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.00 km depth at 8 km distance NW from the volcano.
Earthquake details:
2.3 quake South Pacific Ocean, 55 km north of Whakatane, Bay of Plenty, New Zealand, Sep 12, 2026 11:11 am (GMT +12) (8 km NW)
All earthquakes at White Island
Whakaari/White Island is an active offshore stratovolcano in New Zealand’s Bay of Plenty. A deadly explosion struck visitors in December 2019, and further eruptive activity was recorded in 2024–26.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/347010/Volcano-earthquake-report-2026-09-12.html