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Japan · Chiba Prefecture

M5.8 Earthquake near Yokoshibahikari, Chiba Prefecture (Japan)

UTC time: 2026-06-26 03:46:36 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude
M5.8
Depth
43.0 km
Source
USGS

Chiba Prefecture · Yokoshibahikari

Country overview

Map

M5.8 Earthquake near Yokoshibahikari, Chiba Prefecture (Japan) · 2026-06-26 — Map showing the location of the epicenter
M5.8 Earthquake near Yokoshibahikari, Chiba Prefecture (Japan) · 2026-06-26 — Map showing the location of the epicenter

About this earthquake

On June 26, 2026 at 03:46 UTC, a magnitude M5.8 earthquake occurred near Yokoshibahikari, Chiba Prefecture (Japan). With a focal depth of about 43 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 event was recorded by USGS.

Details

ID
d1ddd8f46ad41feaf36742680d3ca8e27baef979
Magnitude
M5.8
Depth
43.0 km
UTC time
2026-06-26 03:46:36 UTC
Local time
—
Country
Japan
State
Chiba Prefecture
City
Yokoshibahikari
County
Sanmu
Source
usgs
Coordinates
35.63140, 140.50990
Temperature
23.7°C

Depth profile

Depth profile Depth: 43 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 43 km
Shallow
43 km
43 km — deeper than the regional average (33.2 km)
Regional average: 33.2 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

Felt reports

27felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Jun 26, 2026, 1:52 PM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Estimated impact

Green No or minimal impact expected.
Estimated population exposed
IV 37'244'608
V 87'953
43 Felt reports · max reported intensity 4.3

Ground shaking

V
Moderate · Intensity (MMI) V
Felt by all, slight damage possible.

Tectonic context

Located on the Okhotsk Plate.
Near the boundary Okhotsk ↔ Philippine Sea · about 110 km away

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Yokoshiba3.2 kmNW22'075
Narita24.3 kmNW132'906
Chiba35.7 kmW979'768

GeoNames · CC BY 4.0

Volcanoes nearby

  • Hakoneyama
    Distance: 142 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Izu-Oshima
    Distance: 143 km ·Stratovolcano ·Elevation: 758 m ·Last eruption: 1990 ·Japan
  • Izu-Tobu
    Distance: 152 km ·Pyroclastic cone(s) ·Elevation: 580 m ·Last eruption: 1989 ·Japan
  • Takaharayama
    Distance: 156 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Nantaisan
    Distance: 156 km ·Stratovolcano ·Elevation: 2'486 m ·Last eruption: -9540 ·Japan
  • Akagisan
    Distance: 157 km ·Stratovolcano ·Elevation: 1'828 m ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Narita International AirportJapan · NRT · RJAA
    18.8 kmStraight-line distance
  • Ibaraki AirportJapan · IBR · RJAH
    61.8 kmStraight-line distance
  • Tokyo Haneda International AirportJapan · HND · RJTT
    66.0 kmStraight-line distance

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

Nuclear power plants

  • Tokai nuclear power plantJapanUnder construction · Permanently shut downReactor units at site: 2
    88.3 kmStraight-line distance
  • Japan Power Demonstration Reactor nuclear power plantJapanPermanently shut downReactor units at site: 1Approximate location
    92.2 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 hours7
First 24 hours14
First 72 hours16
Strongest subsequent eventM5.8
M5.82026-06-26 03:46:37 UTC12.7 kmSammu M3.12026-06-26 03:52:30 UTC11.2 kmSosa M4.72026-06-26 04:00:09 UTC13.8 kmAsahi M3.92026-06-26 04:00:30 UTC11.2 kmSosa M3.52026-06-26 04:22:30 UTC11.2 kmSosa M4.12026-06-26 04:31:32 UTC24.0 kmAsahi M4.72026-06-26 04:31:32 UTC22.6 kmAsahi M5.72026-06-26 13:28:56 UTC138.8 kmDoshi M5.52026-06-26 13:28:56 UTC149.1 kmTsuru M5.42026-06-26 13:28:56 UTC117.8 kmSagamihara M5.32026-06-26 13:28:58 UTC140.6 kmTsuru M3.32026-06-26 14:17:30 UTC137.4 kmDoshi

Comparison of seismic sources

3 sources currently report magnitudes from M5.8 to M5.8.

Measurements can differ because agencies use different networks and calculation methods. Values may be revised.

SourceMagnitudeDepthPosition difference
EMSCM5.843.0 km0.0 km
SCEDCM5.843.0 km0.0 km
USGSM5.843.0 km0.0 km

Chiba Prefecture

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 34 Catalogue entries

Of 33 other entries for this area and period, 1 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#1
Earlier events M≥4127
Earlier events M≥533
Compared since2025-01-04

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

Strongest earlier events

M5.62026-06-16 10:46:27 UTC81.2 kmNoda M5.62026-06-16 10:46:27 UTC52.6 kmNear East Coast of Honshu, Japan M5.52026-06-16 10:46:28 UTC78.3 kmSugito M5.52026-06-16 10:46:35 UTC72.1 kmNoda M5.52026-06-16 10:46:33 UTC78.4 kmSakai

Historic earthquake map · Japan

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Japan

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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