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M6.6 Depth: 10.0 km

M6.6 Earthquake near 125 km S of Honchō, Japan

UTC time: 2025-12-08 21:52:40 UTC Local time: —

About this earthquake

A magnitude M6.6 earthquake was recorded near 125 km S of Honchō, Japan on December 8, 2025 at 21:52 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can cause significant damage in populated areas.

The event was recorded by USGS.

Details

Magnitude
M6.6
Depth
10.0 km
UTC time
2025-12-08 21:52:40 UTC
Local time
—
Country
—
Source
usgs
Coordinates
41.00740, 143.09990
Temperature
4.8°C

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 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
Kuji144.7 kmSW34'418
Hachinohe146.1 kmW239'046
Sapporo270.8 kmNW1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Osorezan
    Distance: 169 km ·Stratovolcano ·Elevation: 878 m ·Last eruption: 1787 ·Japan
  • Esan
    Distance: 184 km ·Lava dome(s) ·Elevation: 618 m ·Last eruption: 1874 ·Japan
  • Hakkodasan
    Distance: 191 km ·Stratovolcano(es) ·Elevation: 1'585 m ·Last eruption: 1550 ·Japan
  • Towada
    Distance: 195 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
  • Iwatesan
    Distance: 219 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Hachimantai
    Distance: 223 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan

Subsequent earthquakes nearby

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

First 6 hours12
First 24 hours23
First 72 hours44
Strongest subsequent eventM6.7
M6.52025-12-08 21:52:42 UTC13.6 kmEvent of magnitude 6.5, near of Sapporo (Monde) M6.72025-12-08 21:52:42 UTC4.2 kmHOKKAIDO, JAPAN REGION M6.52025-12-08 21:52:45 UTC4.9 kmHokkaido, Japan Region M5.32025-12-08 22:07:14 UTC12.2 kmEvent of magnitude 5.3, near of Sapporo (Monde) M5.12025-12-08 22:07:17 UTC4.8 km122 km S of Honchō, Japan M5.12025-12-08 22:07:19 UTC9.7 kmHokkaido, Japan Region M5.32025-12-08 23:59:02 UTC28.0 kmNear East Coast of Honshu, Japan M5.42025-12-08 23:59:03 UTC33.4 kmEvent of magnitude 5.4, near of Akita (Monde) M5.62025-12-08 23:59:07 UTC26.6 kmNear East Coast of Honshu, Japan M5.42025-12-08 23:59:17 UTC212.6 km M4.82025-12-09 00:18:29 UTC95.0 kmHokkaido, Japan Region M4.52025-12-09 00:18:30 UTC70.4 kmHOKKAIDO, JAPAN REGION

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#15
Earlier events M≥4394
Earlier events M≥5204
Compared since2025-01-05

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

Strongest earlier events

M7.72025-12-08 14:15:13 UTC77.2 km M7.62025-12-08 14:15:12 UTC80.0 kmHOKKAIDO, JAPAN REGION M7.62025-12-08 14:15:10 UTC80.5 km74 km ENE of Misawa, Japan M7.62025-12-08 14:15:09 UTC67.1 km84 km ENE of Misawa, Japan M7.52025-12-08 14:15:10 UTC78.0 kmHokkaido, Japan Region

Stats (last 24h)

Global (24h)
655
Country (24h)
—
—
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