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M6.1 Depth: 33.0 km

M6.1 Earthquake

UTC time: 2025-12-08 18:56:23 UTC Local time: —

About this earthquake

A magnitude M6.1 earthquake was recorded near Earthquake location (40.48, 144.738) on December 8, 2025 at 18:56 UTC. The hypocenter lay relatively close to the surface at around 33 km, increasing how strongly it was felt. Events of this size are considered strong and can be dangerous in inhabited regions.

The event was recorded by NNSN.

Details

Magnitude
M6.1
Depth
33.0 km
UTC time
2025-12-08 18:56:23 UTC
Local time
—
Country
—
Source
nnsn
Coordinates
40.48000, 144.73800

Map

Depth profile

Depth profile Depth: 33 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 33 km
Shallow
33 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
Kuji253.7 kmW34'418
Hachinohe273.8 kmW239'046
Sapporo402.0 kmNW1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Osorezan
    Distance: 317 km ·Stratovolcano ·Elevation: 878 m ·Last eruption: 1787 ·Japan
  • Iwatesan
    Distance: 325 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Towada
    Distance: 326 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
  • Hakkodasan
    Distance: 327 km ·Stratovolcano(es) ·Elevation: 1'585 m ·Last eruption: 1550 ·Japan
  • Akan
    Distance: 328 km ·Caldera ·Elevation: 1'499 m ·Last eruption: 2026 ·Japan
  • Esan
    Distance: 333 km ·Lava dome(s) ·Elevation: 618 m ·Last eruption: 1874 ·Japan

Subsequent earthquakes nearby

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

First 6 hours19
First 24 hours29
First 72 hours49
Strongest subsequent eventM7.0
M6.02025-12-08 18:56:26 UTC140.0 kmOff East Coast of Honshu, Japan M5.72025-12-08 18:56:27 UTC155.4 kmEvent of magnitude 5.7, near of Sapporo (Monde) M5.92025-12-08 18:56:28 UTC157.1 kmNear East Coast of Honshu, Japan M5.52025-12-08 18:56:29 UTC125.7 kmOff east coast of Honshu, Japan [Sea: Japan] M5.92025-12-08 18:56:30 UTC160.7 kmHOKKAIDO, JAPAN REGION M3.72025-12-08 21:31:30 UTC245.1 kmNEAR EAST COAST OF HONSHU, JAPAN M6.12025-12-08 21:52:38 UTC102.7 kmOff East Coast of Honshu, Japan M7.02025-12-08 21:52:39 UTC144.7 km M6.62025-12-08 21:52:40 UTC149.9 km125 km S of Honchō, Japan M6.72025-12-08 21:52:42 UTC152.8 kmHOKKAIDO, JAPAN REGION M6.52025-12-08 21:52:42 UTC161.9 kmEvent of magnitude 6.5, near of Sapporo (Monde) M5.32025-12-08 22:07:14 UTC141.4 kmEvent of magnitude 5.3, near of Sapporo (Monde)

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#19
Earlier events M≥4314
Earlier events M≥5178
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 UTC223.0 km M7.62025-12-08 14:15:12 UTC226.7 kmHOKKAIDO, JAPAN REGION M7.62025-12-08 14:15:10 UTC227.5 km74 km ENE of Misawa, Japan M7.62025-12-08 14:15:09 UTC213.4 km84 km ENE of Misawa, Japan M7.52025-12-08 14:15:10 UTC224.2 kmHokkaido, Japan Region

Stats (last 24h)

Global (24h)
660
Country (24h)
—
—
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