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M5.5 Earthquake near Ryukyu Islands, Japan [Sea: Japan] (Japan)

UTC time: 2025-12-30 08:12:27 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

M5.5 Earthquake near Ryukyu Islands, Japan [Sea: Japan] (Japan) · 2025-12-30 — Map showing the location of the epicenter
M5.5 Earthquake near Ryukyu Islands, Japan [Sea: Japan] (Japan) · 2025-12-30 — Map showing the location of the epicenter

About this earthquake

On December 30, 2025 at 08:12 UTC, a magnitude M5.5 earthquake occurred near Ryukyu Islands, Japan [Sea: Japan] (Japan). The hypocenter lay relatively close to the surface at around 17 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by INGV. Japan: over the past 24 hours, QuakeMap24 logged 4 earthquakes, the strongest at M4.4.

Details

ID
902e74e0709c517b8bef56998e6ecdeec638950c
Magnitude
M5.5
Depth
16.8 km
UTC time
2025-12-30 08:12:27 UTC
Local time
—
Country
Japan
City
he po ting
Source
ingv
Coordinates
27.54490, 128.80100
Temperature
21.1°C

Depth profile

Depth profile Depth: 16.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 16.8 km
Shallow
16.8 km
16.8 km — shallower than the regional average (33.6 km)
Regional average: 33.6 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

Nearby population centers

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

PlaceDistanceDirectionPopulation
Naze113.3 kmNE41'365
Uruma160.0 kmSW125'303
Kagoshima478.1 kmN595'049

GeoNames · CC BY 4.0

Volcanoes nearby

  • Io-Torishima
    Distance: 68 km ·Complex ·Elevation: 212 m ·Last eruption: 1968 ·Japan
  • Yokoatejima
    Distance: 141 km ·Stratovolcano(es) ·Elevation: 495 m ·Last eruption: 1835 ·Japan
  • Akusekijima
    Distance: 227 km ·Stratovolcano(es) ·Elevation: 555 m ·Japan
  • Suwanosejima
    Distance: 249 km ·Stratovolcano(es) ·Elevation: 796 m ·Last eruption: 2026 ·Japan
  • Nakanoshima
    Distance: 277 km ·Stratovolcano(es) ·Elevation: 979 m ·Last eruption: 1914 ·Japan
  • Kuchinoshima
    Distance: 291 km ·Stratovolcano(es) ·Elevation: 628 m ·Last eruption: 1190 ·Japan

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Okinoerabu AirportJapan · OKE · RJKB
    15.7 kmStraight-line distance
  • Tokunoshima AirportJapan · TKN · RJKN
    33.4 kmStraight-line distance
  • Yoron AirportJapan · RNJ · RORY
    68.3 kmStraight-line distance

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

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 hours5
First 24 hours7
First 72 hours11
Strongest subsequent eventM5.1
M5.12025-12-30 08:12:35 UTC26.8 kmEvent of magnitude 5.1, near of Fukuoka (Monde) M3.12025-12-30 08:16:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M4.12025-12-30 08:23:30 UTC6.1 kmRYUKYU ISLANDS, JAPAN M3.42025-12-30 08:32:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M4.12025-12-30 08:48:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M3.62025-12-30 19:03:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M4.12025-12-31 07:43:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M3.02025-12-31 15:16:30 UTC6.1 kmRYUKYU ISLANDS, JAPAN M3.92025-12-31 15:42:30 UTC19.9 kmRYUKYU ISLANDS, JAPAN M3.72026-01-01 17:32:30 UTC6.1 kmRYUKYU ISLANDS, JAPAN M3.72026-01-01 23:43:30 UTC17.2 kmRYUKYU ISLANDS, JAPAN M3.62026-01-10 05:15:30 UTC11.7 kmhe po ting

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#1
Earlier events M≥420
Earlier events M≥54
Compared since2025-01-07

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

Strongest earlier events

M5.52025-12-30 08:12:25 UTC5.6 km20 km NNE of Wadomari, Japan M5.52025-12-30 08:12:24 UTC5.5 km20 km NNE of Wadomari, Japan M5.42025-12-30 08:12:26 UTC14.6 kmRyukyu Islands, Japan M5.02025-08-06 00:56:41 UTC83.7 kmRYUKYU ISLANDS, JAPAN M4.92025-08-06 00:56:42 UTC95.8 kmRyukyu Islands, 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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