Back to map
Japan · Chiba Prefecture

M5.9 Earthquake near Choshi, Chiba Prefecture (Japan)

UTC time: 2026-06-26 03:46:36 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.

Map

M5.9 Earthquake near Choshi, Chiba Prefecture (Japan) · 2026-06-26 — Map showing the location of the epicenter
M5.9 Earthquake near Choshi, Chiba Prefecture (Japan) · 2026-06-26 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.9 earthquake was recorded near Choshi, Chiba Prefecture (Japan) on June 26, 2026 at 03:46 UTC. The hypocenter lay relatively close to the surface at around 56 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

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

Details

ID
7e5ead9b705c7939e57f0f27fb24d158d84416b3
Magnitude
M5.9
Depth
55.9 km
UTC time
2026-06-26 03:46:36 UTC
Local time
—
Country
Japan
State
Chiba Prefecture
City
Choshi
Source
ingv
Coordinates
35.55350, 140.86700
Temperature
23.9°C

Depth profile

Depth profile Depth: 55.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 55.9 km
Shallow
55.9 km
55.9 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

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 109 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation
Hasaki20.2 kmN39'209
Narita55.9 kmNW132'906
Chiba68.1 kmW979'768

GeoNames · CC BY 4.0

Volcanoes nearby

  • Izu-Oshima
    Distance: 163 km ·Stratovolcano ·Elevation: 758 m ·Last eruption: 1990 ·Japan
  • Hakoneyama
    Distance: 171 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Izu-Tobu
    Distance: 176 km ·Pyroclastic cone(s) ·Elevation: 580 m ·Last eruption: 1989 ·Japan
  • Takaharayama
    Distance: 179 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Nantaisan
    Distance: 183 km ·Stratovolcano ·Elevation: 2'486 m ·Last eruption: -9540 ·Japan
  • Toshima
    Distance: 185 km ·Stratovolcano ·Elevation: 508 m ·Last eruption: -4550 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Narita International AirportJapan · NRT · RJAA
    49.4 kmStraight-line distance
  • Ibaraki AirportJapan · IBR · RJAH
    80.9 kmStraight-line distance
  • Tokyo Haneda International AirportJapan · HND · RJTT
    97.7 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
    99.4 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 hours10
First 72 hours12
Strongest subsequent eventM5.8
M5.82026-06-26 03:46:37 UTC46.0 kmSammu M3.12026-06-26 03:52:30 UTC29.1 kmSosa M4.72026-06-26 04:00:09 UTC24.1 kmAsahi M3.92026-06-26 04:00:30 UTC29.1 kmSosa M3.52026-06-26 04:22:30 UTC29.1 kmSosa M4.12026-06-26 04:31:32 UTC14.2 kmAsahi M4.72026-06-26 04:31:32 UTC12.9 kmAsahi M5.42026-06-26 13:28:56 UTC149.9 kmSagamihara M3.82026-06-26 18:59:30 UTC74.5 kmShiroi M3.22026-06-26 19:30:30 UTC106.2 kmShimotsuma M3.32026-06-28 14:34:30 UTC117.0 kmNEAR EAST COAST OF HONSHU, JAPAN M3.22026-06-28 15:19:30 UTC99.0 kmJoso

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, 0 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≥4119
Earlier events M≥532
Compared since2025-01-04

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

Strongest earlier events

M5.82026-06-26 03:46:35 UTC33.4 kmYokoshibahikari M5.62026-06-16 10:46:27 UTC112.8 kmNoda M5.62026-06-16 10:46:27 UTC84.3 kmNear East Coast of Honshu, Japan M5.52026-06-16 10:46:28 UTC110.1 kmSugito M5.52026-06-16 10:46:35 UTC104.4 kmNoda

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.

Share