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M5.5 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan]

UTC time: 2025-08-29 16:29:19 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
M5.5
Depth
34.2 km
Source
INGV

Near east coast of eastern Honshu, Japan [Sea: Japan]

Map

M5.5 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan] · 2025-08-29 — Map showing the location of the epicenter
M5.5 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan] · 2025-08-29 — Map showing the location of the epicenter

About this earthquake

On August 29, 2025 at 16:29 UTC, a magnitude M5.5 earthquake occurred near Near east coast of eastern Honshu, Japan [Sea: Japan]. The hypocenter lay relatively close to the surface at around 34 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

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

Details

ID
96398efb080e33b9637cef87786fffdff41d6809
Magnitude
M5.5
Depth
34.2 km
UTC time
2025-08-29 16:29:19 UTC
Local time
—
Country
—
Source
ingv
Coordinates
38.36070, 142.48200
Temperature
27.0°C

Depth profile

Depth profile Depth: 34.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 34.2 km
Shallow
34.2 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
Kesennuma98.9 kmNW61'147
Ishinomaki103.2 kmW140'151
Sendai141.3 kmW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Naruko
    Distance: 157 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Kurikomayama
    Distance: 162 km ·Stratovolcano ·Last eruption: 1950 ·Japan
  • Zaozan [Zaosan]
    Distance: 180 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Hijiori
    Distance: 204 km ·Caldera ·Elevation: 552 m ·Japan
  • Azumayama
    Distance: 208 km ·Stratovolcano(es) ·Elevation: 1'949 m ·Last eruption: 1977 ·Japan
  • Adatarayama
    Distance: 209 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
    85.7 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 150 km. They are not automatically classified as aftershocks.

First 6 hours6
First 24 hours9
First 72 hours9
Strongest subsequent eventM6.0
M5.52025-08-29 16:29:21 UTC27.8 kmNEAR EAST COAST OF HONSHU, JAPAN M6.02025-08-29 16:29:21 UTC27.8 km63 km E of Onagawa Cho, Japan M5.02025-08-29 16:50:54 UTC134.3 kmOff East Coast of Honshu, Japan M5.02025-08-29 16:51:01 UTC140.9 km61 km E of Tomioka, Japan M5.22025-08-29 16:51:03 UTC135.8 kmEvent of magnitude 5.2, near of Sendai (Monde) M3.92025-08-29 16:53:30 UTC141.1 kmNEAR EAST COAST OF HONSHU, JAPAN M5.02025-08-30 09:26:28 UTC115.6 kmNear East Coast of Honshu, Japan M5.12025-08-30 09:26:31 UTC143.7 kmEvent of magnitude 5.1, near of Sendai (Monde) M4.82025-08-30 09:26:37 UTC133.1 km4 km W of Yamada, Japan M4.32025-09-04 10:23:57 UTC98.3 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52025-09-04 10:23:58 UTC98.3 km78 km ESE of Yamada, Japan M3.22025-09-05 04:01:30 UTC98.3 kmEASTERN 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 150 km.

Magnitude rank#6
Earlier events M≥458
Earlier events M≥514
Compared since2025-01-14

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 UTC11.1 kmNear East Coast of Honshu, Japan M5.82025-08-21 22:34:46 UTC54.9 kmNear east coast of eastern Honshu, Japan [Sea: Japan] M5.72025-08-29 16:29:14 UTC25.7 kmNear East Coast of Honshu, Japan M5.72025-08-21 22:34:46 UTC51.7 km51 km SE of Ōfunato, Japan M5.62025-08-29 16:29:18 UTC45.0 kmEvent of magnitude 5.6, near of Sendai (Monde)

Stats (last 24h)

Global (24h)
484
Country (24h)
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