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M5.1 Earthquake near iwaki shi (Japan)

UTC time: 2025-08-28 19:54:35 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.

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M5.1 Earthquake near iwaki shi (Japan) · 2025-08-28 — Map showing the location of the epicenter
M5.1 Earthquake near iwaki shi (Japan) · 2025-08-28 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.1 earthquake was recorded near iwaki shi (Japan) on August 28, 2025 at 19:54 UTC. At around 80 km, the focal depth places this among intermediate-depth events. Events of this size can cause damage near the epicenter.

The data is provided by RESIF and cross-checked across seismological networks. Japan: 2 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

ID
dafcc2f3b35c6800e82f58804323b0f3ddc4cf7c
Magnitude
M5.1
Depth
79.7 km
UTC time
2025-08-28 19:54:35 UTC
Local time
—
Country
Japan
City
iwaki shi
Source
resif
Coordinates
37.07615, 140.74728
Temperature
19.9°C

Depth profile

Depth profile Depth: 79.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 79.7 km
Intermediate
79.7 km
79.7 km — deeper than the regional average (33.2 km)
Regional average: 33.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Iwaki12.4 kmE357'309
Utsunomiya95.5 kmSW518'757

GeoNames · CC BY 4.0

Volcanoes nearby

  • Nasudake
    Distance: 70 km ·Stratovolcano(es) ·Elevation: 1'915 m ·Last eruption: 1963 ·Japan
  • Adatarayama
    Distance: 76 km ·Stratovolcano(es) ·Elevation: 1'728 m ·Last eruption: 1996 ·Japan
  • Bandaisan
    Distance: 83 km ·Stratovolcano ·Elevation: 1'816 m ·Last eruption: 1888 ·Japan
  • Azumayama
    Distance: 86 km ·Stratovolcano(es) ·Elevation: 1'949 m ·Last eruption: 1977 ·Japan
  • Takaharayama
    Distance: 88 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Numazawa
    Distance: 112 km ·Shield ·Elevation: 835 m ·Last eruption: -3400 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Fukushima AirportJapan · FKS · RJSF
    32.7 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-04

Nuclear power plants

  • Fukushima Daini nuclear power plantJapanPermanently shut downReactor units at site: 4
    36.4 kmStraight-line distance
  • Fukushima Daiichi nuclear power plantJapanPermanently shut downReactor units at site: 6
    46.1 kmStraight-line distance
  • Japan Power Demonstration Reactor nuclear power plantJapanPermanently shut downReactor units at site: 1Approximate location
    70.0 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 hours1
First 24 hours5
First 72 hours5
Strongest subsequent eventM5.2
M3.42025-08-28 23:10:30 UTC29.4 kmNEAR EAST COAST OF HONSHU, JAPAN M5.02025-08-29 16:50:54 UTC125.8 kmOff East Coast of Honshu, Japan M5.02025-08-29 16:51:01 UTC86.6 km61 km E of Tomioka, Japan M5.22025-08-29 16:51:03 UTC83.0 kmEvent of magnitude 5.2, near of Sendai (Monde) M3.92025-08-29 16:53:30 UTC79.5 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52025-09-05 12:00:09 UTC137.4 kmEASTERN HONSHU, JAPAN M4.52025-09-05 12:00:11 UTC142.8 km5 km NE of Hanyū, Japan M3.92025-09-06 17:39:30 UTC104.4 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52025-09-08 14:04:15 UTC103.0 kmOFF EAST COAST OF HONSHU, JAPAN M3.82025-09-08 18:27:30 UTC79.5 kmNEAR EAST COAST OF HONSHU, JAPAN M3.72025-09-10 07:30:30 UTC132.3 kmEASTERN HONSHU, JAPAN M4.22025-09-10 16:49:01 UTC117.1 kmNEAR EAST COAST OF HONSHU, JAPAN

Japan

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 970 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#5
Earlier events M≥459
Earlier events M≥54
Compared since2025-01-05

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

Strongest earlier events

M5.22025-08-13 19:13:34 UTC91.0 kmNear East Coast of Honshu, Japan M5.22025-07-15 14:47:11 UTC63.2 kmNear East Coast of Honshu, Japan M5.22025-07-15 14:47:11 UTC60.7 kmNEAR EAST COAST OF HONSHU, JAPAN M5.12025-07-04 18:14:32 UTC146.8 kmOff East Coast of Honshu, Japan M5.02025-02-21 13:01:46 UTC84.4 kmNear East Coast of Honshu, Japan

Historic earthquake map · Japan

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Japan

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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