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M6.6 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan]

UTC time: 2026-05-15 11:22:06 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
M6.6
Depth
77.7 km
Source
INGV

Near east coast of eastern Honshu, Japan [Sea: Japan]

Map

M6.6 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan] · 2026-05-15 — Map showing the location of the epicenter
M6.6 Earthquake near Near east coast of eastern Honshu, Japan [Sea: Japan] · 2026-05-15 — Map showing the location of the epicenter

About this earthquake

On May 15, 2026 at 11:22 UTC, a magnitude M6.6 earthquake occurred near Near east coast of eastern Honshu, Japan [Sea: Japan]. At around 78 km, the focal depth places this among intermediate-depth events. Events of this size are considered strong and can be dangerous in inhabited regions.

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

Details

ID
25ffcdb3de9b671bcf846b3b4172079329493086
Magnitude
M6.6
Depth
77.7 km
UTC time
2026-05-15 11:22:06 UTC
Local time
—
Country
—
Source
ingv
Coordinates
38.68240, 142.02600
Temperature
11.2°C

Depth profile

Depth profile Depth: 77.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 77.7 km
Intermediate
77.7 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
Kesennuma45.9 kmNW61'147
Ishinomaki69.7 kmSW140'151
Sendai111.0 kmSW1'096'704

GeoNames · CC BY 4.0

Volcanoes nearby

  • Kurikomayama
    Distance: 112 km ·Stratovolcano ·Last eruption: 1950 ·Japan
  • Naruko
    Distance: 112 km ·Caldera ·Elevation: 470 m ·Last eruption: 837 ·Japan
  • Zaozan [Zaosan]
    Distance: 151 km ·Complex ·Elevation: 1'841 m ·Last eruption: 1940 ·Japan
  • Iwatesan Activity reported
    Distance: 157 km ·Complex ·Elevation: 2'038 m ·Last eruption: 1919 ·Japan
  • Akita-Komagatake
    Distance: 160 km ·Stratovolcano(es) ·Elevation: 1'637 m ·Last eruption: 1971 ·Japan
  • Hijiori
    Distance: 162 km ·Caldera ·Elevation: 552 m ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Nuclear power plants

  • Onagawa nuclear power plantJapanOut of operation · Operating at dataset date · Permanently shut downReactor units at site: 3
    55.5 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 250 km. They are not automatically classified as aftershocks.

First 6 hours0
First 24 hours0
First 72 hours6
Strongest subsequent eventM5.0
M5.02026-05-17 00:07:24 UTC168.1 kmOff East Coast of Honshu, Japan M4.72026-05-17 00:07:28 UTC162.9 kmOFF EAST COAST OF HONSHU, JAPAN M4.62026-05-17 00:07:30 UTC192.5 kmNear East Coast of Honshu, Japan M4.22026-05-17 02:42:15 UTC41.5 kmda chuan du shi M3.72026-05-17 09:02:30 UTC48.8 kmNEAR EAST COAST OF HONSHU, JAPAN M4.02026-05-18 06:19:30 UTC94.6 kmNEAR EAST COAST OF HONSHU, JAPAN M4.82026-05-18 17:04:28 UTC170.7 kmOff East Coast of Honshu, Japan M4.82026-05-18 17:04:29 UTC175.1 kmOff east coast of Honshu M3.22026-05-18 20:14:30 UTC221.1 kmshi chuan ting M3.82026-05-20 06:12:30 UTC115.4 kmNEAR EAST COAST OF HONSHU, JAPAN M3.92026-05-21 04:20:30 UTC24.3 kmda chuan du shi M4.62026-05-22 16:53:58 UTC181.2 kmNEAR 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 250 km.

Magnitude rank#18
Earlier events M≥4645
Earlier events M≥5313
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 UTC182.1 kmOff East Coast of Honshu, Japan M7.52026-04-20 07:52:59 UTC144.4 kmOff east coast of Honshu, Japan [Sea: Japan] M7.42026-04-20 07:53:01 UTC166.3 km100 km ENE of Miyako, Japan M7.42026-04-20 07:52:59 UTC157.3 kmOff East Coast of Honshu, Japan M7.42026-04-20 07:52:58 UTC170.0 kmNEAR EAST COAST OF HONSHU, JAPAN

Stats (last 24h)

Global (24h)
606
Country (24h)
—
—
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