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M5.8 Depth: 45.9 km

M5.8 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan]

UTC time: 2025-08-21 22:34:46 UTC Local time: —

About this earthquake

A magnitude M5.8 earthquake was recorded near Near east coast of eastern Honshu, Japan [Sea: Japan] on August 21, 2025 at 22:34 UTC. The hypocenter lay relatively close to the surface at around 46 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by INGV.

Details

Magnitude
M5.8
Depth
45.9 km
UTC time
2025-08-21 22:34:46 UTC
Local time
—
Country
—
Source
ingv
Coordinates
38.75450, 142.10200
Temperature
24.6°C

Map

Depth profile

Depth profile Depth: 45.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 45.9 km
Shallow
45.9 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
Kesennuma48.3 kmW61'147
Ishinomaki79.2 kmSW140'151
Sendai120.4 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Kurikomayama
    Distance: 116 km ·Stratovolcano ·Elevation: 1'627 m ·Last eruption: 1950 ·Japan
  • Naruko
    Distance: 119 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Iwatesan
    Distance: 155 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Akita-Komagatake
    Distance: 158 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
  • Zaozan [Zaosan]
    Distance: 160 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Hijiori
    Distance: 169 km ·Caldera ·Elevation: 552 m ·Japan

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 hours5
Strongest subsequent eventM5.8
M4.92025-08-21 23:06:10 UTC28.5 kmNear East Coast of Honshu, Japan M5.02025-08-21 23:06:18 UTC105.5 kmEvent of magnitude 5.0, near of Sendai (Monde) M4.52025-08-21 23:06:18 UTC2.9 km47 km SE of Ōfunato, Japan M3.72025-08-23 17:18:30 UTC18.2 km M3.62025-08-24 04:58:30 UTC94.0 km M3.32025-08-25 02:25:30 UTC18.4 km M4.02025-08-28 09:31:30 UTC57.0 km M5.72025-08-29 16:29:14 UTC79.1 kmNear East Coast of Honshu, Japan M5.82025-08-29 16:29:16 UTC44.4 kmNear East Coast of Honshu, Japan M5.62025-08-29 16:29:18 UTC28.1 kmEvent of magnitude 5.6, near of Sendai (Monde) M5.52025-08-29 16:29:19 UTC54.9 kmNear east coast of eastern Honshu, Japan [Sea: Japan] M5.52025-08-29 16:29:21 UTC43.2 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#1
Earlier events M≥451
Earlier events M≥55
Compared since2025-01-05

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

Strongest earlier events

M5.52025-08-21 22:34:41 UTC9.8 kmNear East Coast of Honshu, Japan M5.42025-08-21 22:34:42 UTC18.1 kmEvent of magnitude 5.4, near of Sendai (Monde) M5.12025-06-14 10:46:54 UTC49.1 kmNear East Coast of Honshu, Japan M5.12025-02-12 21:04:28 UTC43.6 km61 km E of Onagawa Chō, Japan M5.02025-06-14 10:47:01 UTC25.1 km

Stats (last 24h)

Global (24h)
671
Country (24h)
—
—
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