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: Apaneca Range (10 quakes between mag 2.1-3.1), Balut (7 quakes between mag 1.4-2.9), Clear Lake (22 quakes between mag 0.2-2.4), Coso (2 quakes between mag 1.1-1.2), Etna (1 quake mag 1.8), Fani Maoré (1 quake mag 1.3)
Flores (18 quakes between mag 1.2-2.1), Hakone (1 quake mag 2.3), Irazu (1 quake mag 1.5), Kanlaon (1 quake mag 3.0), Kilauea (4 quakes between mag 1.8-2.8), Kolumbo (1 quake mag 1.4), Ljósufjöll (10 quakes between mag 0.0-1.0), Loihi (2 quakes between mag 2.0-2.3), Maunaloa (2 quakes between mag 1.3-2.1), Pelée (2 quakes between mag 0.1-2.2), Sandal (1 quake mag 1.3), Sousaki (3 quakes between mag 1.0-2.4), Stepovak Bay 4 (1 quake mag 2.3), Svartsengi (1 quake mag 1.2), Tecapa (3 quakes between mag 3.1-3.5), Vatnafjöll (1 quake mag 1.2), Zapatera (1 quake mag 3.0) (updated 19h50)\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:



Apaneca Range volcano (El Salvador): 10 earthquakes up to magnitude 3.1

10 earthquakes occurred near (under) the volcano during 6 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 15.40 and 3.50 km.
Earthquake details: (only 5 largest)
3.1 quake 10.4 km southeast of Ahuachapan, Departamento de Ahuachapan, El Salvador, Oct 19, 2026 10:35 pm (GMT -6) (6 km WSW)
3.1 quake 9.7 km southeast of Ahuachapan, Departamento de Ahuachapan, El Salvador, Oct 20, 2026 04:35 am (GMT -6) (5 km WSW)
3.1 quake 9.7 km southeast of Ahuachapan, Departamento de Ahuachapan, El Salvador, Oct 20, 2026 04:35 am (GMT -6) (4 km WSW)
3.0 quake 10.5 km southeast of Ahuachapan, Departamento de Ahuachapan, El Salvador, Oct 20, 2026 04:30 am (GMT -6) (5 km WSW)
2.9 quake 10.1 km southeast of Ahuachapan, Departamento de Ahuachapan, El Salvador, Oct 20, 2026 04:30 am (GMT -6) (4 km WSW)
All earthquakes at Apaneca Range
The Apaneca Range is a chain of stratovolcanoes, lava domes and thermal areas in western El Salvador. Its dated eruptive history is uncertain, but deadly hydrothermal activity occurred at Agua Shuca in 1990, followed by another explosion there in July 2025.

Balut volcano (Mindanao): 7 earthquakes up to magnitude 2.9

7 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 33.00 and 27.00 km.
Earthquake details: (only 5 largest)
2.9 quake 11 km west of Sarangani, Davao Occidental, Davao, Philippines, Oct 20, 2026 02:02 pm (GMT +8) (3 km SSW)
2.3 quake Celebes Sea, 21 km west of Sarangani Island, Philippines, Oct 21, 2026 12:48 am (GMT +8) (10 km W)
2.3 quake Davao Occidental, Davao, Philippines, Oct 20, 2026 12:48 pm (GMT +8) (10 km W)
2.0 quake Celebes Sea, 17 km west of Sarangani Island, Philippines, Oct 20, 2026 10:01 pm (GMT +8) (7 km WNW)
1.9 quake 15 km northwest of Sarangani, Davao Occidental, Davao, Philippines, Oct 20, 2026 04:38 am (GMT +8) (11 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): 22 earthquakes up to magnitude 2.4

Possible earthquake swarm: 22 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 19 minutes ago. Hypocenter depths ranged between 32.90 and 0.09 km.
Earthquake details: (only 5 largest)
2.4 quake 19 mi southeast of Ukiah, Mendocino County, California, United States, Oct 20, 2026 07:45 am (GMT -7) (19 km WSW)
1.8 quake Sonoma County, 14 mi southwest of Clearlake, Lake County, California, United States, Oct 19, 2026 10:46 pm (GMT -7) (19 km S)
1.7 quake 10.7 mi southwest of Clearlake, Lake County, California, United States, Oct 20, 2026 04:13 am (GMT -7) (15 km S)
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)
1.1 quake 27 mi north of Santa Rosa, Sonoma County, California, United States, Oct 20, 2026 11:31 am (GMT -7) (18 km SSW)
All earthquakes at Clear Lake

Flores volcano (Guatemala): 18 earthquakes up to magnitude 2.1

Possible earthquake swarm: 18 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 17.00 and 3.60 km.
Earthquake details: (only 5 largest)
2.1 quake 24 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 20, 2026 04:30 am (GMT -6) (14 km NW)
1.9 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 20, 2026 03:05 am (GMT -6) (15 km WNW)
1.9 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 19, 2026 02:10 pm (GMT -6) (14 km WNW)
1.7 quake 22 km northeast of Cuilapa, Departamento de Santa Rosa, Guatemala, Oct 20, 2026 12:43 am (GMT -6) (15 km WNW)
1.7 quake 26 km west of Jutiapa, Departamento de Jutiapa, Guatemala, Oct 19, 2026 09:10 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.

Hakone volcano (Honshu): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 2 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.00 km depth at 4 km distance SSW from the volcano.
Earthquake details:
2.3 quake 16 km southwest of Odawara, Kanagawa, Japan, Oct 21, 2026 02:40 am (GMT +9) (4 km SSW)
All earthquakes at Hakone
Hakone is a caldera-and-dome volcanic complex about 80 km southwest of Tokyo. Its Owakudani thermal area produced small explosions, local ashfall and new fumaroles in 2015.

Kanlaon volcano (Central Philippines): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 17.00 km depth at 17 km distance ESE from the volcano.
Earthquake details:
3.0 quake 6.3 km east of Canlaon, Philippines, Oct 20, 2026 11:40 pm (GMT +8) (17 km ESE)
All earthquakes at Kanlaon
Kanlaon is a 2,422-m-high stratovolcano and the highest point on the Philippine island of Negros. Its frequently explosive historical activity includes a deadly 1996 eruption and stronger eruptions during 2024-26.

Kilauea volcano (Hawai'i (Big Island)): 4 earthquakes up to magnitude 2.8

4 earthquakes occurred near (under) the volcano during 24 minutes, the last being recorded quake 11 hours ago. Hypocenter depths ranged between 39.47 and 0.34 km.
Earthquake details:
2.8 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 19, 2026 10:40 pm (GMT -10) (6 km ESE)
2.7 quake 25 mi southwest of Hilo, Hawaii County, Hawaii, United States, Oct 19, 2026 10:40 pm (GMT -10) (5 km SE)
2.1 quake 11 mi southwest of Volcano, Hawaii County, Hawaii, United States, Oct 19, 2026 10:16 pm (GMT -10) (12 km SW)
1.8 quake 28 mi south of Hilo, Hawaii County, Hawaii, United States, Oct 19, 2026 10:31 pm (GMT -10) (15 km SE)
All earthquakes at Kilauea

Loihi volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.3

2 earthquakes occurred near (under) the volcano during 9 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 34.15 and 30.87 km.
Earthquake details:
2.3 quake North Pacific Ocean, 13 mi southeast of Pāhala, Hawaii County, Hawaii, United States, Oct 19, 2026 06:45 pm (GMT -10) (17 km NW)
2.0 quake North Pacific Ocean, 40 mi southeast of of Hawai‘i Island, Hawaii County, Hawaii, United States, Oct 20, 2026 03:43 am (GMT -10) (18 km NW)
All earthquakes at Loihi
Loihi, now named Kamaʻehuakanaloa, is a submarine shield volcano about 35 km southeast of Hawaiʻi. Its last confirmed eruption was in 1996, while later unrest has consisted of earthquake swarms without confirmed eruptions.

Maunaloa volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.1

2 earthquakes occurred near (under) the volcano during 7 hours, the last being recorded quake 16 hours ago. Hypocenter depths ranged between 7.75 and 1.00 km.
Earthquake details:
2.1 quake 17 mi east of Honaunau-Napoopoo, Hawaii County, Hawaii, United States, Oct 19, 2026 06:16 pm (GMT -10) (6 km S)
1.3 quake 11 mi north of Pāhala, Hawaii County, Hawaii, United States, Oct 19, 2026 11:38 am (GMT -10) (17 km SE)
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.

Pelée volcano (Caribbean): 2 earthquakes up to magnitude 2.2

2 earthquakes occurred near (under) the volcano during 4 minutes, the last being recorded quake 19 hours ago. Hypocenter depths ranged between 0.26 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)
0.1 quake 25 km northwest of Fort-de-France, Martinique, Oct 20, 2026 12:21 am (Universal Time) (0 km NW)
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.

Sousaki volcano (Greece): 3 earthquakes up to magnitude 2.4

3 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 19.00 and 5.00 km.
Earthquake details:
2.4 quake Ionian Sea, 2.7 km northwest of Corinth, Nomos Korinthias, Peloponnese, Greece, Oct 20, 2026 10:46 am (GMT +3) (15 km W)
1.8 quake Ionian Sea, 16 km north of Corinth, Nomos Korinthias, Peloponnese, Greece, Oct 20, 2026 09:40 am (GMT +3) (17 km NNW)
1.0 quake Aegean Sea, 31 km west of Nisi Salamina Island, Nomos Attikis, Attica, Greece, Oct 20, 2026 08:20 pm (GMT +3) (10 km SE)
All earthquakes at Sousaki

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

A magnitude 2.3 earthquake occurred at the volcano 19 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

Tecapa volcano (El Salvador): 3 earthquakes up to magnitude 3.5

3 earthquakes occurred near (under) the volcano during 10 minutes, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 5.00 and 1.70 km.
Earthquake details:
3.5 quake 22 km north of Usulutan, Departamento de Usulutan, El Salvador, Oct 20, 2026 11:23 am (GMT -6) (5 km NNE)
3.1 quake 22 km north of Usulutan, Departamento de Usulutan, El Salvador, Oct 20, 2026 11:13 am (GMT -6) (5 km N)
3.1 quake 23 km north of Usulutan, Departamento de Usulutan, El Salvador, Oct 20, 2026 11:16 am (GMT -6) (5 km N)
All earthquakes at Tecapa
Tecapa is an El Salvador volcanic complex distinguished by the Laguna de Alegría crater lake, fumarolic activity and the Berlín geothermal field. Its last eruption is undated, and a reported event in 1878 remains uncertain.

Zapatera volcano (Nicaragua): 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 6.00 km depth at 13 km distance SSE from the volcano.
Earthquake details:
3.0 quake 39 km southeast of Granada, Departamento de Granada, Nicaragua, Oct 20, 2026 11:29 am (GMT -6) (13 km SSE)
All earthquakes at Zapatera
Zapatera is a 629-m-high shield volcano forming a forested island in western Lake Nicaragua. Its last eruption is undated, and no eruption is known from approximately the past 12,000 years.
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