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Japan · Fukuoka Prefecture

M3.1 Earthquake near Itoshima, Fukuoka Prefecture (Japan)

UTC time: 2026-08-17 23:21:30 UTC Local time: —

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About this earthquake

A magnitude M3.1 earthquake was recorded near Itoshima, Fukuoka Prefecture (Japan) on August 17, 2026 at 23:21 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by EMSC. Japan: over the past 24 hours, QuakeMap24 logged 2 earthquakes, the strongest at M3.6.

Details

ID
d9a572205812dd50b9ba49f469fd7ef23f13b518
Magnitude
M3.1
Depth
10.0 km
UTC time
2026-08-17 23:21:30 UTC
Local time
—
Country
Japan
State
Fukuoka Prefecture
City
Itoshima
Source
emsc
Coordinates
33.50000, 130.10000
Temperature
26.8°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

Volcanoes nearby

  • Unzendake
    Distance: 84 km ·Complex ·Elevation: 1'483 m ·Last eruption: 1996 ·Japan
  • Asosan Activity reported
    Distance: 114 km ·Caldera ·Elevation: 1'592 m ·Last eruption: 2021 ·Japan
  • Kujusan
    Distance: 116 km ·Stratovolcano(es) ·Elevation: 1'791 m ·Last eruption: 1996 ·Japan
  • Yufu-Tsurumi
    Distance: 122 km ·Lava dome(s) ·Last eruption: 867 ·Japan
  • Fukue
    Distance: 150 km ·Volcanic field ·Elevation: 315 m ·Last eruption: -400 ·Japan
  • Abu
    Distance: 170 km ·Volcanic field ·Elevation: 641 m ·Last eruption: -6850 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Fukuoka AirportJapan · FUK · RJFF
    33.9 kmStraight-line distance
  • Iki AirportJapan · IKI · RJDB
    40.2 kmStraight-line distance
  • Kyushu Saga International AirportJapan · HSG · RJFS
    43.2 kmStraight-line distance

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

Nuclear power plants

  • Genkai nuclear power plantJapanOperating at dataset date · Permanently shut downReactor units at site: 4
    24.5 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

Historic earthquake map · Japan

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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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