Volcano earthquake report for Friday, 21 Aug 2026

Quakes detected near: Balut (6 quakes between mag 1.7-3.8), Batur (1 quake mag 2.6), Clear Lake (21 quakes between mag 0.2-1.3), Coso (19 quakes between mag 0.1-1.3), Etna (8 quakes between mag 0.4-2.9), Guntur (1 quake mag 2.4)
Inielika (5 quakes between mag 2.6-4.6), Inierie (2 quakes between mag 2.5-2.6), Iraya (1 quake mag 3.0), Irazu (1 quake mag 3.0), Iya (1 quake mag 3.0), Kawah Kamojang (1 quake mag 2.1), Laguna Aramuaca (2 quakes between mag 0.0-2.1), Loihi (1 quake mag 1.7), Mahagnao (1 quake mag 1.8), Masaya (1 quake mag 3.0), Maunaloa (2 quakes between mag 1.7-1.8), Mount St. Helens (2 quakes between mag 0.5-1.0), Nejapa-Miraflores (1 quake mag 3.0), Paluweh (1 quake mag 2.6), Papandayan (2 quakes between mag 2.4-3.3), Poco Leok (3 quakes between mag 2.1-2.5), Prestahnukur (3 quakes between mag 0.8-1.2), Ranakah (8 quakes between mag 2.1-3.4), Reporoa (1 quake mag 1.6), Salak (1 quake mag 3.0), San Cristobal (1 quake mag 1.6), Sousaki (1 quake mag 1.1), Tana (15 quakes between mag 0.9-2.0), Tjörnes Fracture Zone (3 quakes between mag 1.0-2.8), Torfajökull (1 quake mag 1.1), White Island (1 quake mag 2.0), Yavinsky (1 quake mag 3.8), Yojoa (1 quake mag 3.2) (updated 03h50)

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:

Balut volcano (Mindanao): 6 earthquakes up to magnitude 3.8

6 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 32.00 and 8.00 km.
Earthquake details: (only 5 largest)
3.8 quake Celebes Sea, 18 km west of Sarangani Island, Philippines, Aug 20, 2026 04:06 pm (Manila time) (11 km NW)
3.0 quake Philippine Sea, 15 km northwest of Sarangani Island, Philippines, Aug 21, 2026 02:29 am (GMT +8) (17 km N)
2.2 quake Philippine Sea, 15 km west of Sarangani Island, Philippines, Aug 21, 2026 03:58 am (GMT +8) (9 km NNW)
2.1 quake Celebes Sea, 23 km west of Sarangani Island, Philippines, Aug 21, 2026 08:42 am (GMT +8) (12 km W)
2.0 quake Philippine Sea, 18 km northwest of Sarangani Island, Philippines, Aug 20, 2026 11:17 pm (GMT +8) (14 km NNW)
All earthquakes at Balut

Batur volcano (Bali): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 23 hours ago. The quake, which might be volcanic in origin, was located at a depth of 13.00 km depth at 16 km distance ENE from the volcano.
Earthquake details:
2.6 quake Bali Sea, 30 km north of Amlapura, Indonesia, Aug 20, 2026 12:33 pm (GMT +8) (16 km ENE)
All earthquakes at Batur

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

Possible earthquake swarm: 21 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 4.16 and 0.66 km.
Earthquake details: (only 5 largest)
1.3 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Aug 20, 2026 04:02 am (GMT -7) (18 km S)
1.2 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Aug 20, 2026 04:53 am (GMT -7) (18 km S)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Aug 20, 2026 01:36 pm (GMT -7) (17 km S)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Aug 20, 2026 06:48 am (GMT -7) (18 km SSW)
1.1 quake 28 mi north of Santa Rosa, Sonoma County, California, United States, Aug 20, 2026 06:17 am (GMT -7) (15 km SSW)
All earthquakes at Clear Lake

Coso volcano (California): 19 earthquakes up to magnitude 1.3

Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 58 minutes ago. Hypocenter depths ranged between 8.50 and 1.97 km.
Earthquake details: (only 5 largest)
1.3 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 20, 2026 03:00 pm (GMT -7) (4 km NNW)
1.3 quake Inyo County, 29 mi north of Ridgecrest, Kern County, California, United States, Aug 20, 2026 11:43 am (GMT -7) (4 km E)
1.2 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 20, 2026 04:19 pm (GMT -7) (4 km NNW)
1.1 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 20, 2026 07:52 pm (GMT -7) (4 km NNW)
0.9 quake Inyo County, 32 mi north of Ridgecrest, Kern County, California, United States, Aug 20, 2026 07:18 pm (GMT -7) (4 km NNW)
All earthquakes at Coso

Etna volcano (Italy): 8 earthquakes up to magnitude 2.9

8 earthquakes occurred near (under) the volcano during 1 hour 19 minutes, the last being recorded quake 21 hours ago. Hypocenter depths ranged between 2.12 and 0.27 km.
Earthquake details: (only 5 largest)
2.9 quake 15 km northwest of Giarre, Province of Catania, Sicily, Italy, Aug 20, 2026 07:47 am (GMT +2) (7 km NE)
1.8 quake 14 km northwest of Giarre, Province of Catania, Sicily, Italy, Aug 20, 2026 08:54 am (GMT +2) (7 km NE)
1.3 quake 10.4 km northwest of Acireale, Province of Catania, Sicily, Italy, Aug 20, 2026 08:42 am (GMT +2) (12 km SE)
1.2 quake 14 km northwest of Giarre, Province of Catania, Sicily, Italy, Aug 20, 2026 08:03 am (GMT +2) (8 km NE)
1.1 quake 14 km northwest of Giarre, Province of Catania, Sicily, Italy, Aug 20, 2026 07:49 am (GMT +2) (8 km NE)
All earthquakes at Etna

Guntur volcano (West Java): magnitude 2.4 earthquake

A magnitude 2.4 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.00 km depth at 2 km distance NNW from the volcano.
Earthquake details:
2.4 quake 16 km northwest of Garut, Kabupaten Garut, Jawa Barat, Indonesia, Aug 20, 2026 04:11 pm (GMT +7) (2 km NNW)
All earthquakes at Guntur

Inielika volcano (Flores): 5 earthquakes up to magnitude 4.6

5 earthquakes occurred near (under) the volcano during 18 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 41.00 and 5.00 km.
Earthquake details:
4.6 quake Kabupaten Ngada, 87 km northeast of Ruteng, Indonesia, Aug 20, 2026 06:08 pm (GMT +8) (8 km N)
3.9 quake Kabupaten Ngada, 55 km east of Ruteng, Indonesia, Aug 20, 2026 06:07 pm (Makassar time) (8 km NNW)
3.0 quake Kabupaten Ngada, 50 km east of Ruteng, Indonesia, Aug 21, 2026 07:10 am (GMT +8) (10 km WSW)
2.7 quake Kabupaten Ngada, 53 km east of Ruteng, Indonesia, Aug 20, 2026 02:26 pm (GMT +8) (9 km NNW)
2.6 quake Kabupaten Ngada, 74 km west of Ende, Indonesia, Aug 20, 2026 01:13 pm (GMT +8) (16 km NNE)
All earthquakes at Inielika

Inierie volcano (Flores): 2 earthquakes up to magnitude 2.6

2 earthquakes occurred near (under) the volcano during 4 hours, the last being recorded quake 19 hours ago. Hypocenter depths ranged between 6.00 and 5.00 km.
Earthquake details:
2.6 quake Savu Sea, 52 km southeast of Ruteng, Indonesia, Aug 20, 2026 01:29 pm (GMT +8) (12 km W)
2.5 quake Savu Sea, 45 km southeast of Ruteng, Indonesia, Aug 20, 2026 05:07 pm (GMT +8) (17 km WNW)
All earthquakes at Inierie

Iraya volcano (North of Luzon): magnitude 3.0 earthquake

A magnitude 3.0 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 17 km distance S from the volcano.
Earthquake details:
3.0 quake South China Sea, 14 km southeast of Batan Island, Philippines, Aug 20, 2026 11:35 pm (GMT +8) (17 km S)
All earthquakes at Iraya

Irazu volcano (Costa Rica): magnitude 3.0 earthquake

A magnitude 3.0 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 13 km distance SW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 17 km east of San Jose, Provincia de San Jose, Costa Rica, Aug 20, 2026 01:53 am (GMT -6) (13 km SW)
All earthquakes at Irazu

Iya volcano (Flores): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 38.00 km depth at 12 km distance SSW from the volcano.
Earthquake details:
3.0 quake Savu Sea, 19 km southwest of Ende, Kabupaten Ende, East Nusa Tenggara, Indonesia, Aug 20, 2026 02:45 pm (GMT +8) (12 km SSW)
All earthquakes at Iya

Kawah Kamojang volcano (West Java): 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 4.00 km depth at 3 km distance W from the volcano.
Earthquake details:
2.1 quake 7.4 km south of Paseh, Kabupaten Bandung, Jawa Barat, Indonesia, Aug 20, 2026 02:16 pm (GMT +7) (3 km W)
All earthquakes at Kawah Kamojang

Laguna Aramuaca volcano (El Salvador): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano at nearly the same time (21:32 UTC). Hypocenter depths ranged between 5.00 and 5.00 km.
Earthquake details:
2.1 quake 17 km south of San Miguel, Departamento de San Miguel, El Salvador, Aug 20, 2026 03:32 pm (GMT -6) (13 km SSW)
0.0 quake 17 km south of San Miguel, Departamento de San Miguel, El Salvador, Aug 20, 2026 03:32 pm (GMT -6) (13 km SSW)
All earthquakes at Laguna Aramuaca

Masaya volcano (Nicaragua): magnitude 3.0 earthquake

A magnitude 3.0 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 ENE from the volcano.
Earthquake details:
Reported quake or seismic-like event: 20 km southeast of Managua, Departamento de Managua, Nicaragua, Aug 19, 2026 11:53 pm (GMT -6) (5 km ENE)
All earthquakes at Masaya

Nejapa-Miraflores volcano (Nicaragua): magnitude 3.0 earthquake

A magnitude 3.0 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 9 km distance E from the volcano.
Earthquake details:
Reported quake or seismic-like event: 2.2 km southeast of Managua, Departamento de Managua, Nicaragua, Aug 20, 2026 12:10 am (GMT -6) (9 km E)
All earthquakes at Nejapa-Miraflores

Paluweh volcano (Lesser Sunda Islands): magnitude 2.6 earthquake

A magnitude 2.6 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 17 km distance WSW from the volcano.
Earthquake details:
2.6 quake Kabupaten Sikka, 56 km north of Ende, Indonesia, Aug 20, 2026 03:29 pm (GMT +8) (17 km WSW)
All earthquakes at Paluweh

Papandayan volcano (West Java): 2 earthquakes up to magnitude 3.3

2 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 10 hours ago. Hypocenter depths ranged between 10.00 and 10.00 km.
Earthquake details:
3.3 quake 20 km east of Banjar, Kabupaten Bandung, Jawa Barat, Indonesia, Aug 21, 2026 01:18 am (GMT +7) (16 km WNW)
2.4 quake 20 km east of Banjar, Kabupaten Bandung, Jawa Barat, Indonesia, Aug 20, 2026 09:50 pm (GMT +7) (16 km WNW)
All earthquakes at Papandayan

Poco Leok volcano (Flores): 3 earthquakes up to magnitude 2.5

3 earthquakes occurred near (under) the volcano during 1 hour 41 minutes, the last being recorded quake 19 hours ago. Hypocenter depths ranged between 14.00 and 5.00 km.
Earthquake details:
2.5 quake Savu Sea, 25 km south of Ruteng, Indonesia, Aug 20, 2026 04:49 pm (GMT +8) (18 km S)
2.4 quake 19 km south of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 20, 2026 03:09 pm (GMT +8) (11 km S)
2.1 quake 10.4 km southwest of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 20, 2026 03:20 pm (GMT +8) (9 km W)
All earthquakes at Poco Leok

Ranakah volcano (Flores): 8 earthquakes up to magnitude 3.4

8 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 48.00 and 5.00 km.
Earthquake details: (only 5 largest)
3.4 quake 5.5 km southeast of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 20, 2026 11:06 pm (GMT +8) (2 km SW)
2.5 quake Kabupaten Manggarai Timur, 19 km northeast of Ruteng, Indonesia, Aug 20, 2026 05:25 pm (GMT +8) (18 km N)
2.3 quake Kabupaten Manggarai Timur, 24 km east of Ruteng, Indonesia, Aug 20, 2026 06:15 pm (GMT +8) (19 km ENE)
2.3 quake 16 km north of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 20, 2026 03:15 pm (GMT +8) (17 km N)
2.2 quake 8.4 km north of Ruteng, Kabupaten Manggarai, East Nusa Tenggara, Indonesia, Aug 20, 2026 05:57 pm (GMT +8) (9 km NNW)
All earthquakes at Ranakah

Salak volcano (West Java): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 19 km distance NE from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 21 km south of Depok, Kota Depok, Jawa Barat, Indonesia, Aug 20, 2026 08:42 pm (GMT +7) (19 km NE)
All earthquakes at Salak

Tana volcano (Aleutian Islands): 15 earthquakes up to magnitude 2.0

Possible earthquake swarm: 15 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 18.00 and 0.68 km.
Earthquake details: (only 5 largest)
2.0 quake Bering Sea, 9.9 mi southeast of Chuginadak Island, Aleutians West Census Area, Alaska, United States, Aug 19, 2026 08:12 pm (GMT -9) (13 km SSE)
1.6 quake 38 mi west of Nikolski, Aleutians West Census Area, Alaska, United States, Aug 19, 2026 08:53 pm (GMT -9) (2 km E)
1.6 quake 38 mi west of Nikolski, Aleutians West Census Area, Alaska, United States, Aug 19, 2026 07:52 pm (GMT -9) (2 km ESE)
1.6 quake 37 mi west of Nikolski, Aleutians West Census Area, Alaska, United States, Aug 19, 2026 07:14 pm (GMT -9) (3 km ESE)
1.4 quake 38 mi west of Nikolski, Aleutians West Census Area, Alaska, United States, Aug 19, 2026 10:36 pm (GMT -9) (2 km E)
All earthquakes at Tana

Tjörnes Fracture Zone volcano (Iceland): 3 earthquakes up to magnitude 2.8

3 earthquakes occurred near (under) the volcano during 2 hours, the last being recorded quake 21 hours ago. Hypocenter depths ranged between 10.80 and 5.00 km.
Earthquake details:
2.8 quake 87 km north of Akureyri, Northeast, Iceland, Aug 20, 2026 07:16 am (Reykjavik time) (18 km NW)
1.1 quake 21.1 km WSW of Kópasker Aug 20, 2026 05:46 am (Universal Time) (12 km SE)
1.0 quake 33.2 km N of Húsavík Aug 20, 2026 05:03 am (Universal Time) (6 km NW)
All earthquakes at Tjörnes Fracture Zone

Yavinsky volcano (Southern Kamchatka): magnitude 3.8 earthquake

A magnitude 3.8 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 15.46 km depth at 11 km distance SW from the volcano.
Earthquake details:
3.8 quake Sea of Okhotsk, 23 km southwest of Ozernovskiy, Kamchatka, Russia, Aug 21, 2026 09:18 am (Kamchatka time) (11 km SW)
All earthquakes at Yavinsky

Yojoa volcano (Honduras): magnitude 3.2 earthquake

A magnitude 3.2 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.00 km depth at 8 km distance SW from the volcano.
Earthquake details:
3.2 quake 44 km south of Villanueva, Departamento de Cortes, Honduras, Aug 20, 2026 04:28 am (GMT -6) (8 km SW)
All earthquakes at Yojoa
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