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Japan · Aomori Prefecture

M5.1 Earthquake near Ajigasawa, Aomori Prefecture (Japan)

UTC time: 2026-08-27 19:54:48 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
M5.1
Depth
10.0 km
Source
RESIF

Aomori Prefecture · Ajigasawa

Country overview

Map

M5.1 Earthquake near Ajigasawa, Aomori Prefecture (Japan) · 2026-08-27 — Map showing the location of the epicenter
M5.1 Earthquake near Ajigasawa, Aomori Prefecture (Japan) · 2026-08-27 — Map showing the location of the epicenter

About this earthquake

On August 27, 2026 at 19:54 UTC, a magnitude M5.1 earthquake occurred near Ajigasawa, Aomori Prefecture (Japan). The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The data is provided by RESIF and cross-checked across seismological networks. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.6.

Details

ID
7cf0e766ab2e0da8d4335bb6d40548d8f5e3a8d9
Magnitude
M5.1
Depth
10.0 km
UTC time
2026-08-27 19:54:48 UTC
Local time
—
Country
Japan
State
Aomori Prefecture
City
Ajigasawa
County
Nishitsugaru County
Source
resif
Coordinates
40.86749, 140.13452
Temperature
25.6°C

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — shallower than the regional average (33.7 km)
Regional average: 33.7 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

Tectonic context

Located on the Okhotsk Plate.
Near the boundary Okhotsk ↔ Amur · about 116 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation
Shimokizukuri21.1 kmE18'907
Hirosaki41.7 kmSE168'739
Sapporo264.4 kmN1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Iwakisan
    Distance: 27 km ·Stratovolcano ·Elevation: 1'624 m ·Last eruption: 1863 ·Japan
  • Hakkodasan
    Distance: 67 km ·Stratovolcano(es) ·Elevation: 1'584 m ·Last eruption: 1550 ·Japan
  • Towada
    Distance: 74 km ·Caldera ·Elevation: 1'011 m ·Last eruption: 915 ·Japan
  • Osorezan
    Distance: 94 km ·Stratovolcano ·Elevation: 878 m ·Last eruption: 1787 ·Japan
  • Oshima-Oshima
    Distance: 96 km ·Stratovolcano ·Elevation: 732 m ·Last eruption: 1790 ·Japan
  • Megata
    Distance: 108 km ·Maar(s) ·Elevation: 160 m ·Last eruption: -2050 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Aomori AirportJapan · AOJ · RJSA
    49.0 kmStraight-line distance
  • Odate Noshiro AirportJapan · ONJ · RJSR
    77.7 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

Nuclear power plants

  • Ohma nuclear power plantJapanUnder constructionReactor units at site: 1
    96.7 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

Japan

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 968 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#12
Earlier events M≥443
Earlier events M≥514
Compared since2025-01-07

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

Strongest earlier events

M5.92025-11-09 08:11:47 UTC41.3 kmEvent of magnitude 5.9, near of Akita (Monde) M5.82026-03-09 15:45:43 UTC139.4 km21 km NE of Otobe, Japan M5.72025-08-18 22:19:09 UTC87.5 km M5.42026-08-08 17:58:02 UTC114.6 kmHachinohe M5.32026-03-13 19:55:30 UTC142.5 km

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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