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M5.1 Earthquake near 90 km E of Tomioka, Japan

UTC time: 2025-10-23 21:09:28 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
M5.1
Depth
40.8 km
Source
USGS

90 km E of Tomioka, Japan

Map

M5.1 Earthquake near 90 km E of Tomioka, Japan · 2025-10-23 — Map showing the location of the epicenter
M5.1 Earthquake near 90 km E of Tomioka, Japan · 2025-10-23 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.1 earthquake was recorded near 90 km E of Tomioka, Japan on October 23, 2025 at 21:09 UTC. With a focal depth of about 41 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.

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

Details

ID
b921e9eddbd1b0e0165144e4eea2eb54bc912a7e
Magnitude
M5.1
Depth
40.8 km
UTC time
2025-10-23 21:09:28 UTC
Local time
—
Country
—
Source
usgs
Coordinates
37.41990, 142.03580
Temperature
15.8°C

Depth profile

Depth profile Depth: 40.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 40.8 km
Shallow
40.8 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
Namie91.7 kmW21'866
Iwaki110.0 kmW357'309
Sendai139.3 kmNW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Adatarayama
    Distance: 157 km ·Stratovolcano(es) ·Elevation: 1'728 m ·Last eruption: 1996 ·Japan
  • Zaozan [Zaosan]
    Distance: 162 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Azumayama
    Distance: 162 km ·Stratovolcano(es) ·Elevation: 1'949 m ·Last eruption: 1977 ·Japan
  • Bandaisan
    Distance: 174 km ·Stratovolcano ·Elevation: 1'816 m ·Last eruption: 1888 ·Japan
  • Naruko
    Distance: 185 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Nasudake
    Distance: 186 km ·Stratovolcano(es) ·Elevation: 1'915 m ·Last eruption: 1963 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Nuclear power plants

  • Fukushima Daiichi nuclear power plantJapanPermanently shut downReactor units at site: 6
    88.5 kmStraight-line distance
  • Fukushima Daini nuclear power plantJapanPermanently shut downReactor units at site: 4
    89.9 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 150 km. They are not automatically classified as aftershocks.

First 6 hours3
First 24 hours3
First 72 hours4
Strongest subsequent eventM5.5
M5.12025-10-23 21:09:29 UTC17.4 kmNEAR EAST COAST OF HONSHU, JAPAN M5.22025-10-23 21:09:29 UTC16.9 kmNear East Coast of Honshu, Japan M3.92025-10-24 00:27:30 UTC91.6 kmNEAR EAST COAST OF HONSHU, JAPAN M3.52025-10-25 16:09:30 UTC147.9 kmNEAR EAST COAST OF HONSHU, JAPAN M3.62025-10-28 22:50:30 UTC77.9 kmNEAR EAST COAST OF HONSHU, JAPAN M4.32025-10-30 07:55:30 UTC66.6 kmNEAR EAST COAST OF HONSHU, JAPAN M4.92025-10-30 08:00:52 UTC70.9 kmNEAR EAST COAST OF HONSHU, JAPAN M4.92025-10-30 08:00:53 UTC68.6 kmNear East Coast of Honshu, Japan M3.82025-11-02 11:43:30 UTC67.8 kmNEAR EAST COAST OF HONSHU, JAPAN M3.92025-11-04 04:07:30 UTC12.2 kmOFF EAST COAST OF HONSHU, JAPAN M3.92025-11-06 14:38:30 UTC82.1 kmNEAR EAST COAST OF HONSHU, JAPAN M3.92025-11-08 09:17:30 UTC98.6 kmNEAR 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 150 km.

Magnitude rank#25
Earlier events M≥497
Earlier events M≥533
Compared since2025-01-05

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

Strongest earlier events

M6.02025-10-04 15:21:09 UTC34.0 kmNEAR EAST COAST OF HONSHU, JAPAN M6.02025-10-04 15:21:09 UTC34.0 km56 km E of Tomioka, Japan M6.02025-10-04 15:21:07 UTC13.3 kmNear east coast of eastern Honshu, Japan [Sea: Japan] M6.02025-10-04 15:21:05 UTC46.5 kmNear East Coast of Honshu, Japan M6.02025-08-29 16:29:21 UTC106.1 km63 km E of Onagawa Cho, Japan

Stats (last 24h)

Global (24h)
519
Country (24h)
—
—
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