Back to map

M6.1 Earthquake near OFF COAST OF HOKKAIDO, JAPAN

UTC time: 2025-06-21 21:23:17 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
M6.1
Depth
10.0 km
Source
EMSC

OFF COAST OF HOKKAIDO, JAPAN

Map

M6.1 Earthquake near OFF COAST OF HOKKAIDO, JAPAN · 2025-06-21 — Map showing the location of the epicenter
M6.1 Earthquake near OFF COAST OF HOKKAIDO, JAPAN · 2025-06-21 — Map showing the location of the epicenter

About this earthquake

A magnitude M6.1 earthquake was recorded near OFF COAST OF HOKKAIDO, JAPAN on June 21, 2025 at 21:23 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size are considered strong and can be dangerous in inhabited regions.

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

Details

ID
5b1d5bf123f45b7706b575d0f6a4ad158d84926e
Magnitude
M6.1
Depth
10.0 km
UTC time
2025-06-21 21:23:17 UTC
Local time
—
Country
—
Source
emsc
Coordinates
42.93000, 146.47000
Temperature
14.9°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
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

2felt 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 21, 2025, 9:49 PM UTC · Last checked: Sep 6, 2026, 12:16 PM UTC

Source: EMSC / LastQuake

Nearby population centers

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

PlaceDistanceDirectionPopulation
Nemuro84.8 kmNW31'223
Kushiro170.6 kmW167'875
Sapporo416.6 kmW1'973'832

GeoNames · CC BY 4.0

Volcanoes nearby

  • Tomariyama [Golovnin]
    Distance: 128 km ·Caldera ·Elevation: 535 m ·Last eruption: 1848 ·Japan - administered by Russia
  • Raususan [Mendeleev]
    Distance: 131 km ·Stratovolcano ·Elevation: 882 m ·Last eruption: 1880 ·Japan - administered by Russia
  • Chachadake [Tiatia]
    Distance: 159 km ·Stratovolcano ·Elevation: 1'772 m ·Last eruption: 1981 ·Japan - administered by Russia
  • Tenchozan
    Distance: 167 km ·Crater rows ·Elevation: 1'046 m ·Japan
  • Rausudake
    Distance: 168 km ·Stratovolcano ·Elevation: 1'660 m ·Last eruption: 1800 ·Japan
  • Mashu
    Distance: 170 km ·Caldera ·Elevation: 857 m ·Last eruption: 1080 ·Japan

Subsequent earthquakes nearby

Events recorded after this earthquake within 250 km. They are not automatically classified as aftershocks.

First 6 hours6
First 24 hours10
First 72 hours12
Strongest subsequent eventM6.0
M6.02025-06-21 21:23:18 UTC9.2 kmOff Coast of Hokkaido, Japan M4.32025-06-21 21:53:44 UTC27.8 kmOFF COAST OF HOKKAIDO, JAPAN M4.32025-06-21 21:53:45 UTC19.9 km99 km SE of Nemuro, Japan M4.62025-06-21 23:03:06 UTC17.8 kmOFF COAST OF HOKKAIDO, JAPAN M4.02025-06-22 02:11:08 UTC14.3 kmKURIL ISLANDS M4.42025-06-22 02:11:08 UTC14.3 km77 km ESE of Nemuro, Japan M4.22025-06-22 10:06:35 UTC31.1 kmOFF COAST OF HOKKAIDO, JAPAN M4.22025-06-22 10:06:35 UTC28.6 km109 km SE of Nemuro, Japan M4.42025-06-22 18:04:23 UTC24.4 kmOFF COAST OF HOKKAIDO, JAPAN M4.22025-06-22 18:04:24 UTC17.1 km95 km SE of Nemuro, Japan M5.02025-06-23 17:55:11 UTC175.4 kmHokkaido, Japan Region M5.22025-06-23 17:55:12 UTC163.1 kmHOKKAIDO, JAPAN REGION

No unambiguous area assignment

Context for this earthquake

This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.

Earthquake overview

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#2
Earlier events M≥465
Earlier events M≥511
Compared since2025-01-13

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

Strongest earlier events

M6.22025-06-18 23:08:05 UTC8.1 km90 km SE of Nemuro, Japan M6.12025-05-31 08:37:15 UTC172.3 km83 km SSE of Kushiro, Japan M6.12025-05-31 08:37:15 UTC168.4 kmHOKKAIDO, JAPAN REGION M6.12025-05-31 08:37:14 UTC172.2 km76 km S of Kushiro, Japan M6.02025-06-18 23:08:05 UTC5.9 kmOff Coast of Hokkaido, Japan

Stats (last 24h)

Global (24h)
499
Country (24h)
—
—
Current earthquakes in
Magnitude Place Local time
No recent events available.

Share