Volcano earthquake report for Monday, 31 August 2026
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 31 Aug 2026 Number in brackets indicate nr of quakes.

Quakes detected near: Balut (5 quakes between mag 1.5-2.7), Bardarbunga (14 quakes between mag 0.1-1.7), Baru (1 quake mag 2.1), Barva (5 quakes between mag 1.7-3.0), Clear Lake (21 quakes between mag 0.2-1.3), Coso (12 quakes between mag 0.7-1.4)
Denison (1 quake mag 1.3), Flores (1 quake mag 1.9), Galeras (1 quake mag 2.2), Grímsvötn (3 quakes between mag 0.1-1.0), Hrómundartindur (7 quakes between mag 0.1-1.5), Jan Mayen (1 quake mag 1.4), Kilauea (2 quakes between mag 1.9-2.2), Klabat (1 quake mag 3.8), Loihi (5 quakes between mag 1.8-3.1), Maroa (1 quake mag 2.2), Prestahnukur (4 quakes between mag 0.7-2.4), Puracé (3 quakes between mag 2.0-3.2), Ranakah (1 quake mag 2.4), Salton Buttes (2 quakes between mag 1.4-1.5), San Cristobal (1 quake mag 1.5), Svartsengi (4 quakes between mag 0.2-1.0), Tenerife (1 quake mag 1.1) (updated 15h50)\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): 5 earthquakes up to magnitude 2.7

5 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 40 minutes ago. Hypocenter depths ranged between 41.00 and 15.00 km.
Earthquake details:
2.7 quake Philippine Sea, 15 km west of Sarangani Island, Philippines, Aug 31, 2026 05:25 pm (GMT +8) (10 km NNW)
2.4 quake Celebes Sea, 20 km northwest of Sarangani Island, Philippines, Aug 31, 2026 11:10 pm (GMT +8) (17 km NNW)
2.3 quake Celebes Sea, 30 km southwest of Sarangani Island, Philippines, Aug 31, 2026 06:23 am (GMT +8) (18 km SW)
1.8 quake Celebes Sea, 19 km southwest of Sarangani Island, Philippines, Aug 31, 2026 12:32 am (GMT +8) (7 km WSW)
1.5 quake Philippine Sea, 15 km west of Sarangani Island, Philippines, Aug 31, 2026 04:45 pm (GMT +8) (11 km NNW)
All earthquakes at Balut

Bardarbunga volcano (Iceland): 14 earthquakes up to magnitude 1.7

Possible earthquake swarm: 14 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 7.90 and 0.00 km.
Earthquake details: (only 5 largest)
1.7 quake 8.1 km E of Bárðarbunga Aug 30, 2026 04:16 pm (Universal Time) (9 km E)
1.6 quake 8.7 km ESE of Bárðarbunga Aug 30, 2026 04:55 pm (Universal Time) (9 km ESE)
1.5 quake 7.6 km E of Bárðarbunga Aug 30, 2026 03:54 pm (Universal Time) (8 km E)
1.0 quake 7.1 km E of Bárðarbunga Aug 30, 2026 04:07 pm (Universal Time) (8 km E)
0.6 quake Iceland: 3.7 km ENE of Bárðarbunga Aug 31, 2026 07:03 am (Reykjavik time) (5 km NE)
All earthquakes at Bardarbunga
Bárðarbunga is an ice-covered Icelandic stratovolcano whose far-reaching fissure system has produced enormous lava flows and major explosive eruptions. Its 2014-15 Holuhraun eruption created a lava field of almost 85 km².

Baru volcano (Panama): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.00 km depth at 18 km distance SSE from the volcano.
Earthquake details:
2.1 quake 26 km north of David, Provincia de Chiriqui, Panama, Aug 31, 2026 04:04 am (GMT -5) (18 km SSE)
All earthquakes at Baru

Barva volcano (Costa Rica): 5 earthquakes up to magnitude 3.0

5 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 29.00 and 4.00 km.
Earthquake details:
3.0 quake Provincia de Heredia, 26 km northeast of San Jose, Costa Rica, Aug 31, 2026 12:07 am (GMT -6) (11 km E)
2.8 quake Provincia de Heredia, 27 km northeast of San Jose, Costa Rica, Aug 30, 2026 11:09 pm (GMT -6) (11 km E)
2.3 quake Provincia de Heredia, 25 km northeast of San Jose, Costa Rica, Aug 31, 2026 12:09 am (Costa_Rica time) (12 km E)
2.0 quake Provincia de Heredia, 28 km north of San Jose, Provincia de San Jose, Costa Rica, Aug 31, 2026 06:03 am (Costa_Rica time) (7 km NNW)
1.7 quake Provincia de Heredia, 25 km northeast of San Jose, Costa Rica, Aug 31, 2026 06:03 am (Costa_Rica time) (12 km E)
All earthquakes at Barva

Clear Lake volcano (California): 21 earthquakes up to magnitude 1.3

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 29 minutes ago. Hypocenter depths ranged between 3.77 and 1.50 km.
Earthquake details: (only 5 largest)
1.3 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Aug 30, 2026 09:31 am (GMT -7) (16 km S)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Aug 31, 2026 08:21 am (GMT -7) (16 km SSW)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Aug 30, 2026 10:26 pm (GMT -7) (17 km S)
1.1 quake 25 mi north of Santa Rosa, Sonoma County, California, United States, Aug 30, 2026 05:02 pm (GMT -7) (19 km S)
1.0 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Aug 31, 2026 05:15 am (GMT -7) (18 km SSW)
All earthquakes at Clear Lake

Coso volcano (California): 12 earthquakes up to magnitude 1.4

Possible earthquake swarm: 12 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 5.45 and 0.56 km.
Earthquake details: (only 5 largest)
1.4 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 31, 2026 06:41 am (GMT -7) (5 km NNW)
1.1 quake Inyo County, 20 mi north of Ridgecrest, Kern County, California, United States, Aug 31, 2026 04:01 am (GMT -7) (17 km SE)
1.1 quake Inyo County, 23 mi north of Ridgecrest, Kern County, California, United States, Aug 30, 2026 05:17 pm (GMT -7) (16 km SE)
1.1 quake Inyo County, 23 mi north of Ridgecrest, Kern County, California, United States, Aug 30, 2026 03:38 pm (GMT -7) (16 km SE)
0.9 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 30, 2026 09:19 pm (GMT -7) (5 km NNW)
All earthquakes at Coso
Coso is a 400 km² volcanic field of rhyolitic domes, basaltic cones and lava flows east of the Sierra Nevada Range. Its youngest dated eruption occurred about 39,000 ± 33,000 years ago, while active fumaroles and thermal springs mark an important geothermal area.

Galeras volcano (Colombia): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 14.10 km depth at 9 km distance NNW from the volcano.
Earthquake details:
2.2 quake 17 km northwest of Pasto, Departamento de Narino, Colombia, Aug 30, 2026 01:48 pm (GMT -5) (9 km NNW)
All earthquakes at Galeras

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

2 earthquakes occurred near (under) the volcano during 1 hour 54 minutes, the last being recorded quake 45 minutes ago. Hypocenter depths ranged between 4.65 and 1.29 km.
Earthquake details:
2.2 quake 27 mi south of Hilo, Hawaii County, Hawaii, United States, Aug 31, 2026 05:04 am (GMT -10) (19 km ESE)
1.9 quake 4.8 mi southwest of Volcano, Hawaii County, Hawaii, United States, Aug 31, 2026 03:11 am (GMT -10) (4 km SSE)
All earthquakes at Kilauea

Klabat volcano (Sulawesi & Sangihe Islands): magnitude 3.8 earthquake

A magnitude 3.8 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 6 km distance SW from the volcano.
Earthquake details:
3.8 quake Kabupaten Minahasa Utara, 17 km southeast of Manado, Indonesia, Aug 31, 2026 03:51 am (Makassar time) (6 km SW)
All earthquakes at Klabat
Klabat is a 1,968 m stratovolcano east of Manado in northern Sulawesi. It has shown fumarolic activity, but no eruption during approximately the past 12,000 years has been verified.

Loihi volcano (Hawai'i (Big Island)): 5 earthquakes up to magnitude 3.1

5 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 32 minutes ago. Hypocenter depths ranged between 32.38 and 29.54 km.
Earthquake details:
3.1 quake North Pacific Ocean, 39 mi southeast of of Hawai‘i Island, Hawaii County, Hawaii, United States, Aug 30, 2026 11:18 am (GMT -10) (19 km NNW)
2.4 quake North Pacific Ocean, 14 mi southeast of Pāhala, Hawaii County, Hawaii, United States, Aug 31, 2026 05:17 am (GMT -10) (16 km NW)
2.2 quake North Pacific Ocean, 12 mi southeast of Pāhala, Hawaii County, Hawaii, United States, Aug 30, 2026 06:14 pm (GMT -10) (19 km NW)
1.9 quake North Pacific Ocean, 40 mi southeast of of Hawai‘i Island, Hawaii County, Hawaii, United States, Aug 31, 2026 02:06 am (GMT -10) (17 km NNW)
1.8 quake North Pacific Ocean, 41 mi southeast of of Hawai‘i Island, Hawaii County, Hawaii, United States, Aug 30, 2026 04:43 pm (GMT -10) (15 km NW)
All earthquakes at Loihi

Maroa volcano (New Zealand): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.30 km depth at 17 km distance SSE from the volcano.
Earthquake details:
2.2 quake 17 km northeast of Taupo, Waikato, New Zealand, Aug 31, 2026 11:42 am (GMT +12) (17 km SSE)
All earthquakes at Maroa

Prestahnukur volcano (Iceland): 4 earthquakes up to magnitude 2.4

4 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 24 minutes ago. Hypocenter depths ranged between 5.10 and 0.00 km.
Earthquake details:
2.4 quake 11.3 km SSW of Eiríksjökull Aug 31, 2026 03:23 pm (Universal Time) (10 km NE)
1.4 quake Iceland: 12.9 km SSW of Eiríksjökull Aug 31, 2026 03:26 pm (Reykjavik time) (8 km NE)
1.3 quake 11.6 km N of Skjaldbreið Aug 31, 2026 05:16 am (Universal Time) (13 km SW)
0.7 quake 11.5 km N of Skjaldbreið Aug 31, 2026 01:11 am (Universal Time) (14 km SW)
All earthquakes at Prestahnukur
Prestahnúkur is a roughly 90-km-long volcanic system beside the Langjökull icecap in Iceland. Its three known eruptions occurred during the past 10,000 years, the last at approximately 3350 BCE.

Puracé volcano (Colombia): 3 earthquakes up to magnitude 3.2

3 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 7 hours ago. Hypocenter depths ranged between 13.10 and 9.20 km.
Earthquake details:
3.2 quake 31 km east of Popayán, Departamento del Cauca, Colombia, Aug 31, 2026 03:21 am (GMT -5) (11 km NE)
2.5 quake 31 km east of Popayán, Departamento del Cauca, Colombia, Aug 30, 2026 09:43 pm (GMT -5) (12 km NE)
2.0 quake 32 km southeast of Piendamo, Departamento del Cauca, Colombia, Aug 31, 2026 03:02 am (GMT -5) (17 km NNE)
All earthquakes at Puracé

Ranakah volcano (Flores): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 5 km distance WNW from the volcano.
Earthquake details:
2.4 quake 3 km east of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 31, 2026 01:36 am (GMT +8) (5 km WNW)
All earthquakes at Ranakah
Ranakah is an Indonesian lava-dome cluster where Anak Ranakah formed during the explosive and effusive eruption of 1987–89. Weak ash emissions in 1991 are its last known eruption.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/339250/Volcano-earthquake-report-2026-08-31.html