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M5.5 Earthquake near Off East Coast of Honshu, Japan

UTC time: 2026-04-20 08:32:45 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

M5.5

Depth: 10.0 km
Source: GFZ

Off East Coast of Honshu, Japan

Map

About this earthquake

On April 20, 2026 at 08:32 UTC, a magnitude M5.5 earthquake occurred near Off East Coast of Honshu, Japan. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by GFZ.

Details

2b2488c434f36b6e124463f3a4e6ae93cfc80b61

Magnitude

M5.5

Depth

10.0 km

UTC time

2026-04-20 08:32:45 UTC

Local time

—

Country

—

Source

gfz

Coordinates

39.57000, 143.21000

Temperature

9.8°C

Depth profile

Shallow

10 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

Yamada108.7 kmW15'195

Morioka177.0 kmW290'700

Sendai249.2 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

Iwatesan Activity reported

Distance: 192 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
Hachimantai

Distance: 206 km ·Stratovolcano ·Elevation: 1'613 m ·Last eruption: -5350 ·Japan
Akita-Komagatake

Distance: 207 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
Akita-Yakeyama

Distance: 214 km ·Stratovolcano ·Elevation: 1'366 m ·Last eruption: 1997 ·Japan
Kurikomayama

Distance: 219 km ·Stratovolcano ·Last eruption: 1950 ·Japan
Towada

Distance: 224 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan

Subsequent earthquakes nearby

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

First 6 hours17

First 24 hours32

First 72 hours61

Strongest subsequent eventM6.7

M5.62026-04-20 08:32:47 UTC8.8 km113 km E of Miyako, Japan M5.12026-04-20 08:32:53 UTC135.7 kmEvent of magnitude 5.1, near Sendai (Monde) M5.12026-04-20 08:33:38 UTC94.5 km M5.12026-04-20 09:49:42 UTC42.5 kmEvent of magnitude 5.1, near Sendai (Monde) M5.42026-04-20 09:49:43 UTC25.1 km M5.32026-04-20 09:49:43 UTC27.2 kmOff East Coast of Honshu, Japan M3.82026-04-20 10:00:32 UTC28.4 km M4.82026-04-20 10:37:31 UTC24.3 kmOFF EAST COAST OF HONSHU, JAPAN M4.82026-04-20 10:37:33 UTC30.6 kmOff East Coast of Honshu, Japan M5.32026-04-20 10:44:12 UTC16.4 kmOff East Coast of Honshu, Japan M5.02026-04-20 10:44:16 UTC10.3 km111 km E of Yamada, Japan M5.12026-04-20 12:56:45 UTC13.4 kmOFF 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#70

Earlier events M≥4352

Earlier events M≥5202

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 UTC57.1 kmOff East Coast of Honshu, Japan M7.52026-04-20 07:52:59 UTC11.0 kmOff east coast of Honshu, Japan [Sea: Japan] M7.42026-04-20 07:53:01 UTC44.8 km100 km ENE of Miyako, Japan M7.42026-04-20 07:52:59 UTC37.1 kmOff East Coast of Honshu, Japan M7.42026-04-20 07:52:58 UTC54.9 kmNEAR EAST COAST OF HONSHU, JAPAN

Stats (last 24h)

Global (24h)

467

Country (24h)

—

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