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M5.1 Depth: 79.7 km

M5.1 Earthquake near iwaki shi (Japan)

UTC time: 2025-08-28 19:54:35 UTC Local time: —

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: 3 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

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

Map

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 (35.1 km)
Regional average: 35.1 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

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 km 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 km M4.52025-09-05 12:00:09 UTC137.4 km M4.52025-09-05 12:00:11 UTC142.8 km5 km NE of Hanyū, Japan M3.92025-09-06 17:39:30 UTC104.4 km M4.52025-09-08 14:04:15 UTC103.0 km M3.82025-09-08 18:27:30 UTC79.5 km M3.72025-09-10 07:30:30 UTC132.3 km M4.22025-09-10 16:49:01 UTC117.1 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#5
Earlier events M≥458
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 km M5.12025-07-04 18:14:32 UTC146.8 kmOff East Coast of Honshu, Japan M4.92025-08-13 19:13:39 UTC75.3 km36 km ESE of Hitachi, 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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