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M7.7 Depth: 45.4 km

M7.7 Earthquake

UTC time: 2025-12-08 14:15:13 UTC Local time: —

About this earthquake

On December 8, 2025 at 14:15 UTC, a magnitude M7.7 earthquake occurred near Earthquake location (40.997, 142.18). The hypocenter lay relatively close to the surface at around 45 km, increasing how strongly it was felt. Events of this size can trigger serious destruction across large regions.

The event was recorded by NNSN.

Details

Magnitude
M7.7
Depth
45.4 km
UTC time
2025-12-08 14:15:13 UTC
Local time
—
Country
—
Source
nnsn
Coordinates
40.99700, 142.18000

Map

Depth profile

Depth profile Depth: 45.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 45.4 km
Shallow
45.4 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
Hitokawame73.8 kmSW24'273
Hachinohe79.6 kmSW239'046
Sapporo240.1 kmN1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Osorezan
    Distance: 94 km ·Stratovolcano ·Elevation: 878 m ·Last eruption: 1787 ·Japan
  • Hakkodasan
    Distance: 116 km ·Stratovolcano(es) ·Elevation: 1'585 m ·Last eruption: 1550 ·Japan
  • Towada
    Distance: 122 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
  • Esan
    Distance: 123 km ·Lava dome(s) ·Elevation: 618 m ·Last eruption: 1874 ·Japan
  • Hachimantai
    Distance: 161 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
  • Iwatesan
    Distance: 162 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan

Subsequent earthquakes nearby

Events recorded after this earthquake within 500 km. They are not automatically classified as aftershocks.

First 6 hours24
First 24 hours50
First 72 hours66
Strongest subsequent eventM7.0
M5.52025-12-08 14:33:37 UTC48.5 kmEvent of magnitude 5.5, near of Akita (Monde) M5.52025-12-08 14:33:41 UTC21.9 kmNEAR EAST COAST OF HONSHU, JAPAN M5.62025-12-08 14:33:41 UTC35.5 kmNear East Coast of Honshu, Japan M5.52025-12-08 14:33:41 UTC35.7 km96 km ENE of Hachinohe, Japan M5.42025-12-08 14:33:43 UTC122.6 km M3.62025-12-08 14:40:30 UTC6.7 kmHOKKAIDO, JAPAN REGION M3.92025-12-08 15:10:30 UTC43.6 kmHOKKAIDO, JAPAN REGION M5.22025-12-08 15:57:53 UTC75.2 kmEvent of magnitude 5.2, near of Sapporo (Monde) M5.12025-12-08 15:57:54 UTC95.1 kmOFF EAST COAST OF HONSHU, JAPAN M5.22025-12-08 15:57:54 UTC84.6 kmOff East Coast of Honshu, Japan M5.02025-12-08 15:57:57 UTC72.3 km131 km S of Honchō, Japan M3.82025-12-08 16:08:30 UTC6.7 kmNEAR EAST COAST OF HONSHU, JAPAN

Historical context nearby

Comparison with recorded earthquakes before this event within 500 km.

Magnitude rank#1
Earlier events M≥4615
Earlier events M≥5259
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 UTC5.0 kmHOKKAIDO, JAPAN REGION M7.62025-12-08 14:15:10 UTC6.0 km74 km ENE of Misawa, Japan M7.62025-12-08 14:15:09 UTC10.1 km84 km ENE of Misawa, Japan M7.52025-12-08 14:15:10 UTC1.7 kmHokkaido, Japan Region M7.42025-12-08 14:15:11 UTC21.9 kmNear east coast of eastern Honshu, Japan [Sea: Japan]

Stats (last 24h)

Global (24h)
668
Country (24h)
—
—
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