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M6.6 Earthquake near Off East Coast of Honshu, Japan

UTC time: 2025-11-09 08:03:39 UTC Local time: —

Earthquake newsQuakeMap24

Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude

M6.6

Depth: 14.0 km
Source: GFZ

Off East Coast of Honshu, Japan

Map

About this earthquake

On November 9, 2025 at 08:03 UTC, a magnitude M6.6 earthquake occurred near Off East Coast of Honshu, Japan. The hypocenter lay relatively close to the surface at around 14 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 GFZ and cross-checked across seismological networks.

Details

1b121435225cd135e8e96251d05eeacb1bf6d223

Magnitude

M6.6

Depth

14.0 km

UTC time

2025-11-09 08:03:39 UTC

Local time

—

Country

—

Source

gfz

Coordinates

39.45000, 143.34000

Temperature

17.2°C

Depth profile

Shallow

14 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

Yamada119.3 kmW15'195

Morioka189.7 kmW290'700

Sendai251.3 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

Iwatesan Activity reported

Distance: 205 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
Hachimantai

Distance: 220 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
Akita-Komagatake

Distance: 220 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
Kurikomayama

Distance: 227 km ·Stratovolcano ·Last eruption: 1950 ·Japan
Akita-Yakeyama

Distance: 228 km ·Stratovolcano ·Elevation: 1'366 m ·Last eruption: 1997 ·Japan
Naruko

Distance: 239 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan

Subsequent earthquakes nearby

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

First 6 hours43

First 24 hours88

First 72 hours101

Strongest subsequent eventM7.7

M6.42025-11-09 08:03:40 UTC17.0 kmEvent of magnitude 6.4, near of Sendai (Monde) M6.72025-11-09 08:03:42 UTC14.8 km133 km E of Yamada, Japan M5.52025-11-09 08:11:20 UTC161.1 km M5.62025-11-09 08:11:26 UTC16.7 kmOff East Coast of Honshu, Japan M5.52025-11-09 08:11:26 UTC19.0 km107 km E of Yamada, Japan M5.52025-11-09 08:11:27 UTC26.3 kmOFF EAST COAST OF HONSHU, JAPAN M5.92025-11-09 08:14:53 UTC14.1 kmOFF EAST COAST OF HONSHU, JAPAN M5.72025-11-09 08:14:53 UTC17.7 kmOff East Coast of Honshu, Japan M5.92025-11-09 08:14:53 UTC12.5 km127 km E of Yamada, Japan M5.22025-11-09 08:14:59 UTC60.7 kmEvent of magnitude 5.2, near of Sendai (Monde) M5.52025-11-09 08:34:02 UTC10.5 kmOFF EAST COAST OF HONSHU, JAPAN M5.42025-11-09 08:34:02 UTC10.4 kmOff East Coast of Honshu, Japan

No unambiguous area assignment

Context for this earthquake

This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.

Earthquake overview

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#4

Earlier events M≥4197

Earlier events M≥563

Compared since2025-01-05

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

Strongest earlier events

M6.82025-11-09 08:03:38 UTC8.6 km126 km E of Yamada, Japan M6.82025-11-09 08:03:38 UTC4.3 kmOFF EAST COAST OF HONSHU, JAPAN M6.82025-11-09 08:03:38 UTC8.6 km M6.22025-11-09 08:03:38 UTC16.0 kmOff East Coast of Honshu, Japan M6.02025-11-08 22:15:08 UTC21.6 kmOff east coast of Honshu, Japan [Sea: Japan]

Stats (last 24h)

Global (24h)

458

Country (24h)

—

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