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M6.1 Depth: 18.4 km

M6.1 Earthquake near Off east coast of Honshu, Japan [Sea: Japan]

UTC time: 2025-12-31 14:26:57 UTC Local time: —

About this earthquake

A magnitude M6.1 earthquake was recorded near Off east coast of Honshu, Japan [Sea: Japan] on December 31, 2025 at 14:26 UTC. The hypocenter lay relatively close to the surface at around 18 km, increasing how strongly it was felt. Events of this size are considered strong and can be dangerous in inhabited regions.

The data is provided by INGV and cross-checked across seismological networks.

Details

Magnitude
M6.1
Depth
18.4 km
UTC time
2025-12-31 14:26:57 UTC
Local time
—
Country
—
Source
ingv
Coordinates
40.04650, 143.13900
Temperature
1.5°C

Map

Depth profile

Depth profile Depth: 18.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 18.4 km
Shallow
18.4 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Miyako111.5 kmSW51'150
Hachinohe147.9 kmW239'046
Sendai278.5 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Iwatesan
    Distance: 184 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Hachimantai
    Distance: 195 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
  • Towada
    Distance: 198 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
  • Akita-Komagatake
    Distance: 202 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
  • Akita-Yakeyama
    Distance: 203 km ·Stratovolcano ·Elevation: 1'366 m ·Last eruption: 1997 ·Japan
  • Hakkodasan
    Distance: 203 km ·Stratovolcano(es) ·Elevation: 1'585 m ·Last eruption: 1550 ·Japan

Subsequent earthquakes nearby

Events recorded after this earthquake within 250 km. They are not automatically classified as aftershocks.

First 6 hours6
First 24 hours7
First 72 hours7
Strongest subsequent eventM6.0
M6.02025-12-31 14:27:00 UTC30.8 kmNear East Coast of Honshu, Japan M3.92025-12-31 14:50:04 UTC112.1 km M4.42025-12-31 14:50:04 UTC112.1 km7 km SE of Iwaizumi, Japan M5.12025-12-31 16:30:20 UTC121.6 kmEvent of magnitude 5.1, near of Sapporo (Monde) M5.12025-12-31 16:30:24 UTC114.3 kmHokkaido, Japan Region M4.92025-12-31 16:30:25 UTC104.9 km127 km S of Honchō, Japan M3.72026-01-01 02:22:30 UTC119.0 km M4.12026-01-06 03:34:06 UTC108.2 km M4.52026-01-06 03:34:06 UTC108.2 km41 km NNE of Kuji, Japan M3.62026-01-06 03:40:30 UTC88.9 km M5.22026-01-06 18:04:41 UTC231.7 kmEvent of magnitude 5.2, near of Sapporo (Monde) M4.82026-01-06 18:04:45 UTC178.5 kmHokkaido, Japan Region

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#28
Earlier events M≥4455
Earlier events M≥5237
Compared since2025-01-05

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M7.62025-12-08 14:15:12 UTC138.2 km M7.62025-12-08 14:15:10 UTC139.2 km74 km ENE of Misawa, Japan M7.62025-12-08 14:15:09 UTC127.6 km84 km ENE of Misawa, Japan M7.52025-12-08 14:15:10 UTC134.9 kmHokkaido, Japan Region M7.42025-12-08 14:15:11 UTC115.5 kmNear east coast of eastern Honshu, Japan [Sea: Japan]

Stats (last 24h)

Global (24h)
655
Country (24h)
—
—
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