Back to map
Japan · Ibaraki Prefecture

M5.5 Earthquake near Sakai, Ibaraki Prefecture (Japan)

UTC time: 2026-06-16 10:46:33 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.

Map

M5.5 Earthquake near Sakai, Ibaraki Prefecture (Japan) · 2026-06-16 — Map showing the location of the epicenter
M5.5 Earthquake near Sakai, Ibaraki Prefecture (Japan) · 2026-06-16 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.5 earthquake was recorded near Sakai, Ibaraki Prefecture (Japan) on June 16, 2026 at 10:46 UTC. With a focal depth of about 51 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

The data is provided by EMSC and cross-checked across seismological networks. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.9.

Details

ID
3a65a5d67fc14c0bf99f02e5cb3e3496c0dbfe6a
Magnitude
M5.5
Depth
50.8 km
UTC time
2026-06-16 10:46:33 UTC
Local time
—
Country
Japan
State
Ibaraki Prefecture
City
Sakai
County
Sashima County
Source
emsc
Coordinates
36.07120, 139.83000
Temperature
20.7°C

Depth profile

Depth profile Depth: 50.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 50.8 km
Shallow
50.8 km
50.8 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

Felt reports

88felt 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 19, 2026, 10:03 AM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Estimated impact

Green No or minimal impact expected.
Estimated population exposed
IV 42'159'836
109 Felt reports · max reported intensity 5

Ground shaking

IV
Light · Intensity (MMI) IV
Felt by many, no damage.

Tectonic context

Located on the Okhotsk Plate.
Near the boundary Okhotsk ↔ Philippine Sea · about 129 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation
Bandō3.3 kmE57'128
Kasukabe12.2 kmSW229'792
Saitama23.9 kmSW1'324'854

GeoNames · CC BY 4.0

Volcanoes nearby

  • Akagisan
    Distance: 79 km ·Stratovolcano ·Elevation: 1'828 m ·Japan
  • Nantaisan
    Distance: 83 km ·Stratovolcano ·Elevation: 2'486 m ·Last eruption: -9540 ·Japan
  • Omanago Group
    Distance: 88 km ·Lava dome(s) ·Elevation: 2'341 m ·Last eruption: -3050 ·Japan
  • Nikko-Shiranesan
    Distance: 91 km ·Shield ·Elevation: 2'578 m ·Last eruption: 1952 ·Japan
  • Takaharayama
    Distance: 92 km ·Stratovolcano ·Elevation: 1'795 m ·Last eruption: -4570 ·Japan
  • Harunasan
    Distance: 99 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 550 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Chofu AirportJapan · RJTF
    52.1 kmStraight-line distance
  • Ibaraki AirportJapan · IBR · RJAH
    53.9 kmStraight-line distance
  • Tokyo Haneda International AirportJapan · HND · RJTT
    58.1 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
    79.5 kmStraight-line distance
  • Japan Power Demonstration Reactor nuclear power plantJapanPermanently shut downReactor units at site: 1Approximate location
    81.7 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

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours3
First 24 hours4
First 72 hours5
Strongest subsequent eventM5.9
M5.52026-06-16 10:46:34 UTC10.0 kmNoda M3.92026-06-16 10:55:30 UTC7.1 kmBando M3.02026-06-16 12:50:30 UTC7.1 kmBando M3.22026-06-16 20:06:30 UTC29.7 kmChikusei M3.72026-06-18 18:44:30 UTC114.2 kmIsumi M3.12026-06-20 19:57:30 UTC4.2 kmSakai M3.22026-06-24 04:24:30 UTC120.7 kmMinamiaizu M3.02026-06-24 04:28:30 UTC120.7 kmMinamiaizu M3.12026-06-24 04:32:30 UTC110.2 kmHinoemata M4.12026-06-26 02:49:30 UTC7.1 kmBando M5.42026-06-26 03:46:33 UTC63.2 kmTako M5.82026-06-26 03:46:35 UTC78.4 kmYokoshibahikari

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#4
Earlier events M≥4103
Earlier events M≥520
Compared since2025-01-04

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

Strongest earlier events

M5.62026-06-16 10:46:27 UTC3.6 kmNoda M5.62026-06-16 10:46:27 UTC25.8 kmNear East Coast of Honshu, Japan M5.52026-06-16 10:46:28 UTC4.0 kmSugito M5.32026-02-13 04:58:33 UTC82.0 km M5.22026-04-01 01:06:08 UTC141.8 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.

Share