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

Quakes detected near: Abu (1 quake mag 3.1), Agung (1 quake mag 3.2), Balut (5 quakes between mag 1.4-1.5), Bardarbunga (27 quakes between mag 0.0-5.3), Brennisteinsfjöll (2 quakes between mag 0.4-1.9), Clear Lake (19 quakes between mag 0.2-1.3)
Coso (2 quakes between mag 0.6-1.2), Fani Maoré (1 quake mag 1.6), Flores (8 quakes between mag 1.3-2.5), Grímsnes (1 quake mag 1.5), Heiðarsporðar (3 quakes between mag 0.2-1.4), Katla (1 quake mag 1.5), Kilauea (3 quakes between mag 1.8-1.9), Krísuvík (1 quake mag 1.0), Makushin (4 quakes between mag 0.2-1.4), Maunaloa (1 quake mag 1.3), Pelée (4 quakes between mag 0.1-2.2), Pocdol Mountains (1 quake mag 1.6), Prestahnukur (1 quake mag 2.0), Ragang (1 quake mag 1.6), Sousaki (1 quake mag 1.5), Spurr (2 quakes between mag 0.5-1.4), Stepovak Bay 4 (1 quake mag 2.3), Taupo (1 quake mag 1.8), Tenerife (1 quake mag 1.4), Torfajökull (2 quakes between mag 1.3-1.7), Villarrica (1 quake mag 3.0), Westdahl (1 quake mag 1.1), Yellowstone (2 quakes between mag 0.9-1.1) (updated 03h50)\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:



Abu volcano (Honshu): magnitude 3.1 earthquake

A magnitude 3.1 earthquake occurred at the volcano 21 hours ago. The quake, which might be volcanic in origin, was located at a depth of 17.40 km depth at 13 km distance S from the volcano.
Earthquake details:
3.1 quake 21 km north of Yamaguchi, Yamaguchi, Japan, Oct 19, 2026 03:54 pm (GMT +9) (13 km S)
All earthquakes at Abu
Abu is a volcanic field of more than 40 centers spread across about 400 square kilometers in southwestern Honshu, Japan. Its last known activity formed the Kasayama scoria cone about 8,800 years ago.

Agung volcano (Bali): magnitude 3.2 earthquake

A magnitude 3.2 earthquake occurred at the volcano 13 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.00 km depth at 18 km distance NNE from the volcano.
Earthquake details:
3.2 quake Bali Sea, 28 km north of Amlapura, Indonesia, Oct 19, 2026 11:07 pm (GMT +8) (18 km NNE)
All earthquakes at Agung
Agung volcano in eastern Bali, Indonesia, is the island's highest and most active volcano.

Bardarbunga volcano (Iceland): 27 earthquakes up to magnitude 5.3

Possible earthquake swarm: 27 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 21 minutes ago. Hypocenter depths ranged between 18.30 and 0.00 km.
Earthquake details: (only 5 largest)
5.3 quake South, 217 km east of Reykjavik, Capital Region, Iceland, Oct 19, 2026 02:44 pm (Reykjavik time) (6 km S)
3.4 quake Northeast, 220 km east of Reykjavik, Capital Region, Iceland, Oct 19, 2026 12:51 pm (Reykjavik time) (4 km ESE)
2.8 quake Northeast, 222 km east of Reykjavik, Capital Region, Iceland, Oct 19, 2026 01:39 pm (Reykjavik time) (5 km ESE)
2.7 quake 5.6 km ESE of Bárðarbunga Oct 19, 2026 12:50 pm (Universal Time) (5 km ESE)
2.3 quake 1.6 km SSE of Bárðarbunga Oct 19, 2026 01:38 pm (Universal Time) (1 km ESE)
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.

Clear Lake volcano (California): 19 earthquakes up to magnitude 1.3

Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 18 minutes ago. Hypocenter depths ranged between 3.66 and 0.09 km.
Earthquake details: (only 5 largest)
1.3 quake Lake County, 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 19, 2026 08:31 pm (GMT -7) (15 km S)
1.2 quake Lake County, 28 mi north of Santa Rosa, Sonoma County, California, United States, Oct 19, 2026 09:10 am (GMT -7) (15 km S)
1.1 quake 26 mi north of Santa Rosa, Sonoma County, California, United States, Oct 19, 2026 05:29 pm (GMT -7) (19 km SSW)
1.1 quake Lake County, 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 19, 2026 09:30 am (GMT -7) (16 km S)
1.1 quake Lake County, 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 19, 2026 04:13 am (GMT -7) (16 km S)
All earthquakes at Clear Lake

Flores volcano (Guatemala): 8 earthquakes up to magnitude 2.5

8 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 14.90 and 4.00 km.
Earthquake details: (only 5 largest)
2.5 quake 25 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 19, 2026 12:29 am (GMT -6) (13 km NW)
1.9 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 19, 2026 02:10 pm (GMT -6) (14 km WNW)
1.9 quake 23 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 19, 2026 12:48 am (GMT -6) (14 km WNW)
1.8 quake 26 km west of Jutiapa, Departamento de Jutiapa, Guatemala, Oct 19, 2026 06:14 am (GMT -6) (14 km WNW)
1.6 quake 25 km west of Jutiapa, Departamento de Jutiapa, Guatemala, Oct 19, 2026 08:37 am (GMT -6) (14 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.

Pelée volcano (Caribbean): 4 earthquakes up to magnitude 2.2

4 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 0.29 and 0.20 km.
Earthquake details:
2.2 quake 25 km northwest of Fort-de-France, Martinique, Oct 19, 2026 08:18 pm (GMT -4) (0 km SSW)
0.4 quake 25 km northwest of Fort-de-France, Martinique, Oct 19, 2026 03:25 am (GMT -4) (0 km NW)
0.1 quake 25 km northwest of Fort-de-France, Martinique, Oct 19, 2026 08:21 pm (GMT -4) (0 km NW)
0.1 quake 25 km northwest of Fort-de-France, Martinique, Oct 19, 2026 04:43 am (GMT -4) (0 km NNE)
All earthquakes at Pelée
Pelée is the Martinique stratovolcano whose catastrophic 1902 eruption destroyed Saint-Pierre and became the defining example of Peléan eruptions. Its last known eruption ended in 1932.

Stepovak Bay 4 volcano (Alaska Peninsula): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 3 hours ago. The quake, which might be volcanic in origin, was located at a depth of 8.10 km depth at 7 km distance SE from the volcano.
Earthquake details:
2.3 quake 46 mi northeast of Sand Point, Aleutians East Borough, Alaska, United States, Oct 19, 2026 04:55 pm (GMT -8) (7 km SE)
All earthquakes at Stepovak Bay 4

Villarrica volcano (Central Chile and Argentina): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 19 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 16 km distance NNW from the volcano.
Earthquake details:
Reported quake or seismic-like event: 22 km east of Villarrica, Provincia de Cautin, Region de la Araucania, Chile, Oct 19, 2026 05:39 am (GMT -3) (16 km NNW)
All earthquakes at Villarrica
Villarrica is a frequently active, glacier-covered Chilean stratovolcano known for Strombolian explosions and a summit lava lake. Its eruptions have also produced lava flows, ash, pyroclastic flows and deadly lahars.
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/383142/Volcano-earthquake-report-2026-10-20.html