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

UTC time: 2026-04-21 05:29:12 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

M5.8

Depth: 8.6 km
Source: INGV

Off east coast of Honshu, Japan [Sea: Japan]

Map

About this earthquake

On April 21, 2026 at 05:29 UTC, a magnitude M5.8 earthquake occurred near Off east coast of Honshu, Japan [Sea: Japan]. With a focal depth of about 9 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

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

Details

bca416be786ba199829d3354ebdaa3a99c0abc9a

Magnitude

M5.8

Depth

8.6 km

UTC time

2026-04-21 05:29:12 UTC

Local time

—

Country

—

Source

ingv

Coordinates

39.81800, 143.41600

Temperature

9.4°C

Depth profile

Shallow

8.6 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

Miyako127.6 kmW51'150

Hachinohe179.6 kmNW239'046

Sendai279.7 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

Iwatesan Activity reported

Distance: 206 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
Hachimantai

Distance: 219 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
Akita-Komagatake

Distance: 224 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
Akita-Yakeyama

Distance: 227 km ·Stratovolcano ·Elevation: 1'366 m ·Last eruption: 1997 ·Japan
Towada

Distance: 229 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
Hakkodasan

Distance: 235 km ·Stratovolcano(es) ·Elevation: 1'584 m ·Last eruption: 1550 ·Japan

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours1

First 24 hours14

First 72 hours37

Strongest subsequent eventM6.7

M5.02026-04-21 05:29:13 UTC36.8 kmEvent of magnitude 5.0, near Sendai (Monde) M4.12026-04-21 16:18:10 UTC105.2 kmpu dai cun M4.52026-04-21 18:42:59 UTC17.9 km M4.62026-04-21 18:43:01 UTC46.4 kmOff East Coast of Honshu, Japan M4.42026-04-21 18:43:02 UTC52.4 kmOFF EAST COAST OF HONSHU, JAPAN M5.42026-04-21 18:44:12 UTC37.8 km140 km E of Noda, Japan M5.32026-04-21 18:44:13 UTC40.7 kmOff East Coast of Honshu, Japan M5.92026-04-21 18:44:15 UTC93.8 kmNear east coast of eastern Honshu M5.22026-04-21 18:44:16 UTC37.6 kmOff East Coast of Honshu, Japan M5.22026-04-22 00:01:07 UTC10.6 kmOff East Coast of Honshu, Japan M5.42026-04-22 00:01:09 UTC10.5 kmOff East Coast of Honshu, Japan M5.22026-04-22 00:01:11 UTC58.1 kmEvent of magnitude 5.2, near Sendai (Monde)

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#54

Earlier events M≥4419

Earlier events M≥5249

Compared since2025-01-05

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

Strongest earlier events

M7.62026-04-20 07:52:57 UTC38.0 kmOff East Coast of Honshu, Japan M7.52026-04-20 07:52:59 UTC30.0 kmOff east coast of Honshu, Japan [Sea: Japan] M7.42026-04-20 07:53:01 UTC35.0 km100 km ENE of Miyako, Japan M7.42026-04-20 07:52:59 UTC34.3 kmOff East Coast of Honshu, Japan M7.42026-04-20 07:52:58 UTC44.7 kmNEAR EAST COAST OF HONSHU, JAPAN

Stats (last 24h)

Global (24h)

530

Country (24h)

—

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