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Japan · Saitama Prefecture

M5.1 Earthquake near Ogose, Saitama Prefecture (Japan)

UTC time: 2026-09-28 19:45:11 UTC Local time: —
Earthquake newsQuakeMap24
First published: Content updated:

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

Map

M5.1 Earthquake near Ogose, Saitama Prefecture (Japan) · 2026-09-28 — Map showing the location of the epicenter
M5.1 Earthquake near Ogose, Saitama Prefecture (Japan) · 2026-09-28 — Map showing the location of the epicenter

About this earthquake

On September 28, 2026 at 19:45 UTC, a magnitude M5.1 earthquake occurred near Ogose, Saitama Prefecture (Japan). The earthquake originated at an intermediate depth of about 92 km. Earthquakes of this magnitude can damage poorly built structures.

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

Details

ID
437ae6f5a5b434f3dd19987bdf4c4beadc35ffe7
Magnitude
M5.1
Depth
92.2 km
UTC time
2026-09-28 19:45:11 UTC
Local time
—
Country
Japan
State
Saitama Prefecture
City
Ogose
County
Iruma County
Source
resif
Coordinates
35.94210, 139.26157
Temperature
20.3°C

Depth profile

Depth profile Depth: 92.2 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 92.2 km
Intermediate
92.2 km
92.2 km — deeper than the regional average (33.2 km)
Regional average: 33.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Estimated impact

69 Felt reports · max reported intensity 4.3

Tectonic context

Located on the Okhotsk Plate.
Near the boundary Okhotsk ↔ Amur · about 93 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation
Morohongō3.9 kmE39'693
Sakado11.6 kmE100'275
Hachiōji32.3 kmS579'355

GeoNames · CC BY 4.0

Volcanoes nearby

  • Akagisan
    Distance: 69 km ·Stratovolcano ·Elevation: 1'828 m ·Japan
  • Harunasan
    Distance: 70 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 550 ·Japan
  • Fujisan
    Distance: 81 km ·Stratovolcano ·Elevation: 3'776 m ·Last eruption: 1708 ·Japan
  • Hakoneyama
    Distance: 82 km ·Complex ·Elevation: 1'438 m ·Last eruption: 2015 ·Japan
  • Asamayama
    Distance: 84 km ·Complex ·Elevation: 2'568 m ·Last eruption: 2019 ·Japan
  • Yokodake
    Distance: 86 km ·Stratovolcano(es) ·Elevation: 2'480 m ·Last eruption: 1200 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Chofu AirportJapan · RJTF
    38.5 kmStraight-line distance
  • Tokyo Haneda International AirportJapan · HND · RJTT
    64.4 kmStraight-line distance

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

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 hours1
First 72 hours7
Strongest subsequent eventM5.2
M3.02026-09-29 13:48:30 UTC123.6 kmSosa M3.52026-09-30 21:17:30 UTC123.6 kmSosa M3.22026-10-01 01:32:30 UTC22.4 kmKawajima M5.22026-10-01 12:27:07 UTC120.4 kmSammu M5.12026-10-01 12:27:12 UTC125.8 kmAsahi M3.62026-10-01 12:31:30 UTC132.5 kmAsahi M3.32026-10-01 12:51:30 UTC130.6 kmChoshi M3.92026-10-01 21:01:30 UTC60.0 kmBando

Japan

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 969 Catalogue entries

Of 968 other entries for this area and period, 52 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#24
Earlier events M≥4119
Earlier events M≥538
Compared since2025-01-04

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

Strongest earlier events

M6.02026-08-22 17:00:40 UTC75.8 kmAbiko M5.82026-06-26 03:46:37 UTC105.5 kmSammu M5.82026-06-26 03:46:36 UTC117.8 kmYokoshibahikari M5.72026-06-26 13:29:02 UTC59.2 kmTsuru M5.72026-06-26 13:28:56 UTC55.3 kmDoshi

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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