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Japan · Hokkaido Prefecture

M5.1 Earthquake near Mori, Hokkaido Prefecture (Japan)

UTC time: 2025-08-18 22:19:21 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

M5.1 Earthquake near Mori, Hokkaido Prefecture (Japan) · 2025-08-18 — Map showing the location of the epicenter
M5.1 Earthquake near Mori, Hokkaido Prefecture (Japan) · 2025-08-18 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.1 earthquake was recorded near Mori, Hokkaido Prefecture (Japan) on August 18, 2025 at 22:19 UTC. The earthquake originated at an intermediate depth of about 114 km. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USP. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.9.

Details

ID
801cec305286a6dd0a6f807cecf62edb60c941e1
Magnitude
M5.1
Depth
114.0 km
UTC time
2025-08-18 22:19:21 UTC
Local time
—
Country
Japan
State
Hokkaido Prefecture
City
Mori
County
Kayabe County
Source
usp
Coordinates
42.13641, 140.74336

Depth profile

Depth profile Depth: 114 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 114 km
Intermediate
114 km
114 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

Nearby population centers

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

PlaceDistanceDirectionPopulation
Honchō27.2 kmS28'514
Hakodate40.1 kmS275'730
Sapporo114.7 kmNE1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Hokkaido-Komagatake
    Distance: 10 km ·Stratovolcano ·Elevation: 1'131 m ·Last eruption: 2000 ·Japan
  • Toya
    Distance: 46 km ·Stratovolcano ·Elevation: 733 m ·Last eruption: 2001 ·Japan
  • Esan
    Distance: 51 km ·Lava dome(s) ·Elevation: 617 m ·Last eruption: 1874 ·Japan
  • Kuttara
    Distance: 52 km ·Stratovolcano(es) ·Elevation: 549 m ·Last eruption: 1820 ·Japan
  • Yoteizan
    Distance: 77 km ·Stratovolcano ·Elevation: 1'898 m ·Last eruption: -1050 ·Japan
  • Shikotsu
    Distance: 81 km ·Caldera ·Elevation: 1'320 m ·Last eruption: 1981 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Hakodate AirportJapan · HKD · RJCH
    41.3 kmStraight-line distance

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

Nuclear power plants

  • Ohma nuclear power plantJapanUnder constructionReactor units at site: 1
    71.1 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 hours4
First 24 hours4
First 72 hours4
Strongest subsequent eventM5.2
M5.12025-08-18 22:19:23 UTC18.5 km23 km NW of Honchō, Japan M5.12025-08-18 22:19:23 UTC6.7 kmHOKKAIDO, JAPAN REGION M5.22025-08-18 22:19:24 UTC13.2 kmHokkaido, Japan Region M5.22025-08-18 22:19:24 UTC22.4 kmEvent of magnitude 5.2, near of Sapporo (Monde) M3.72025-09-04 02:34:30 UTC144.9 kmHOKKAIDO, JAPAN REGION M3.32025-09-05 17:51:30 UTC141.2 kmHOKKAIDO, JAPAN REGION

Japan

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 969 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#5
Earlier events M≥428
Earlier events M≥55
Compared since2025-01-07

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

Strongest earlier events

M5.72025-08-18 22:19:09 UTC66.4 km M5.32025-05-12 14:54:29 UTC125.3 km78 km ENE of Mutsu, Japan M5.32025-05-12 14:54:28 UTC125.3 km M5.22025-05-12 14:54:30 UTC119.2 kmHokkaido, Japan Region M5.02025-02-10 14:16:55 UTC70.2 km39 km ENE of Ōma, Japan

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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