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M6.0 Earthquake near 63 km E of Onagawa Cho, Japan

UTC time: 2025-08-29 16:29:21 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
M6.0
Depth
44.4 km
Source
NNSN

63 km E of Onagawa Cho, Japan

Map

M6.0 Earthquake near 63 km E of Onagawa Cho, Japan · 2025-08-29 — Map showing the location of the epicenter
M6.0 Earthquake near 63 km E of Onagawa Cho, Japan · 2025-08-29 — Map showing the location of the epicenter

About this earthquake

On August 29, 2025 at 16:29 UTC, a magnitude M6.0 earthquake occurred near 63 km E of Onagawa Cho, Japan. The hypocenter lay relatively close to the surface at around 44 km, increasing how strongly it was felt. Earthquakes of this magnitude can cause significant damage in populated areas.

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

Details

ID
a68e09a32891f31f32d3ed5f6e08841540f0c7ea
Magnitude
M6.0
Depth
44.4 km
UTC time
2025-08-29 16:29:21 UTC
Local time
—
Country
—
Source
nnsn
Coordinates
38.36900, 142.16300

Depth profile

Depth profile Depth: 44.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 44.4 km
Shallow
44.4 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
Ishinomaki75.4 kmW140'151
Sendai113.7 kmW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Naruko
    Distance: 131 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Kurikomayama
    Distance: 136 km ·Stratovolcano ·Last eruption: 1950 ·Japan
  • Zaozan [Zaosan]
    Distance: 153 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Hijiori
    Distance: 176 km ·Caldera ·Elevation: 552 m ·Japan
  • Azumayama
    Distance: 182 km ·Stratovolcano(es) ·Elevation: 1'949 m ·Last eruption: 1977 ·Japan
  • Adatarayama
    Distance: 183 km ·Stratovolcano(es) ·Elevation: 1'728 m ·Last eruption: 1996 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Nuclear power plants

  • Onagawa nuclear power plantJapanOut of operation · Operating at dataset date · Permanently shut downReactor units at site: 3
    57.9 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Subsequent earthquakes nearby

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

First 6 hours4
First 24 hours7
First 72 hours7
Strongest subsequent eventM5.2
M5.02025-08-29 16:50:54 UTC132.2 kmOff East Coast of Honshu, Japan M5.02025-08-29 16:51:01 UTC130.4 km61 km E of Tomioka, Japan M5.22025-08-29 16:51:03 UTC123.3 kmEvent of magnitude 5.2, near of Sendai (Monde) M3.92025-08-29 16:53:30 UTC128.7 kmNEAR EAST COAST OF HONSHU, JAPAN M5.02025-08-30 09:26:28 UTC117.3 kmNear East Coast of Honshu, Japan M5.12025-08-30 09:26:31 UTC133.8 kmEvent of magnitude 5.1, near of Sendai (Monde) M4.82025-08-30 09:26:37 UTC124.3 km4 km W of Yamada, Japan M4.32025-09-04 10:23:57 UTC108.4 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52025-09-04 10:23:58 UTC108.4 km78 km ESE of Yamada, Japan M3.22025-09-05 04:01:30 UTC80.9 kmEASTERN HONSHU, JAPAN M3.92025-09-06 17:39:30 UTC85.8 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52025-09-08 14:04:15 UTC150.8 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#1
Earlier events M≥4106
Earlier events M≥522
Compared since2025-01-05

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

Strongest earlier events

M5.82025-08-29 16:29:16 UTC19.7 kmNear East Coast of Honshu, Japan M5.82025-08-21 22:34:46 UTC43.2 kmNear east coast of eastern Honshu, Japan [Sea: Japan] M5.72025-08-29 16:29:14 UTC52.0 kmNear East Coast of Honshu, Japan M5.72025-08-21 22:34:46 UTC38.3 km51 km SE of Ōfunato, Japan M5.62025-08-29 16:29:18 UTC21.2 kmEvent of magnitude 5.6, near of Sendai (Monde)

Stats (last 24h)

Global (24h)
458
Country (24h)
—
—
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