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M5.5 Earthquake

UTC time: 2026-04-20 12:56:42 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
33.0 km
Source
NNSN

Earthquake location (38.074, 142.025)

Map

M5.5 Earthquake · 2026-04-20 — Map showing the location of the epicenter
M5.5 Earthquake · 2026-04-20 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.5 earthquake was recorded near Earthquake location (38.074, 142.025) on April 20, 2026 at 12:56 UTC. The hypocenter lay relatively close to the surface at around 33 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

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

Details

ID
ea259030cd84c06b739c497bb2c0461048b517b9
Magnitude
M5.5
Depth
33.0 km
UTC time
2026-04-20 12:56:42 UTC
Local time
—
Country
—
Source
nnsn
Coordinates
38.07400, 142.02500

Depth profile

Depth profile Depth: 33 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 33 km
Shallow
33 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
Ishinomaki73.9 kmNW140'151
Sendai103.5 kmW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Naruko
    Distance: 134 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Zaozan [Zaosan]
    Distance: 139 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Kurikomayama
    Distance: 146 km ·Stratovolcano ·Last eruption: 1950 ·Japan
  • Adatarayama
    Distance: 160 km ·Stratovolcano(es) ·Elevation: 1'728 m ·Last eruption: 1996 ·Japan
  • Azumayama
    Distance: 161 km ·Stratovolcano(es) ·Elevation: 1'949 m ·Last eruption: 1977 ·Japan
  • Hijiori
    Distance: 173 km ·Caldera ·Elevation: 552 m ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Sendai AirportJapan · SDJ · RJSS
    97.2 kmStraight-line distance

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

Nuclear power plants

  • Onagawa nuclear power plantJapanOut of operation · Operating at dataset date · Permanently shut downReactor units at site: 3
    58.3 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 hours0
First 24 hours2
First 72 hours2
Strongest subsequent eventM6.7
M4.42026-04-21 02:35:47 UTC145.4 km M4.12026-04-21 04:50:30 UTC111.7 kmNEAR EAST COAST OF HONSHU, JAPAN M3.82026-04-23 18:30:30 UTC88.3 kmNEAR EAST COAST OF HONSHU, JAPAN M5.32026-04-24 05:13:00 UTC28.9 km M3.62026-04-26 15:59:30 UTC139.8 kmNEAR EAST COAST OF HONSHU, JAPAN M3.82026-05-02 22:45:30 UTC34.4 kmNEAR EAST COAST OF HONSHU, JAPAN M3.72026-05-03 14:42:30 UTC139.8 kmNEAR EAST COAST OF HONSHU, JAPAN M4.52026-05-05 19:35:06 UTC127.6 kmfan guan cun M4.22026-05-05 19:35:07 UTC144.2 kmer ben song shi M4.82026-05-07 23:31:15 UTC79.2 kmNear East Coast of Honshu, Japan M4.72026-05-07 23:31:16 UTC71.5 kmNEAR EAST COAST OF HONSHU, JAPAN M3.52026-05-09 02:43:30 UTC88.4 kmnan san lu ting

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#15
Earlier events M≥4170
Earlier events M≥557
Compared since2025-01-14

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

Strongest earlier events

M6.02025-10-04 15:21:09 UTC83.1 kmNEAR EAST COAST OF HONSHU, JAPAN M6.02025-10-04 15:21:09 UTC83.1 km56 km E of Tomioka, Japan M6.02025-10-04 15:21:07 UTC77.7 kmNear east coast of eastern Honshu, Japan [Sea: Japan] M6.02025-10-04 15:21:05 UTC83.8 kmNear East Coast of Honshu, Japan M6.02025-08-29 16:29:21 UTC34.9 km63 km E of Onagawa Cho, Japan

Stats (last 24h)

Global (24h)
537
Country (24h)
—
—
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