Shallow M5.4 Earthquake hit in the East China Sea 108km from Naze (Japan) on Sunday Morning.

Written by Earthquakelist.org on June 29th, 2025. Last updated July 19th, 2025.

In the morning of Sunday June 29th, 2025, a shallow and significant MAG-5.4 earthquake hit in the East China Sea 108 kilometer from Naze, Japan. Roughly 130 thousand people may have felt this earthquake.

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Earthquake Summary

This earthquake hit under water in the East China Sea, 99 kilometers (61 mi) off the coast of Japan, 108 kilometer north of Naze in Kagoshima. The center of this earthquake had a very shallow depth of 10 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 29, 2025 10:15 (Tokyo Time) - Jun 29, 2025 01:15 Universal Time.
Location:	108 km north of Naze, Kagoshima, Japan. Coordinates 29°20'8"N 129°23'45"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.4 Detected by 15 stations. Maximum Error Range ±0.08 .
Depth:	10 km (6 mi) A very shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
Tsunami Risk:	Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here.

Minimal impact predicted

Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 fatalities, and a 96% chance that the number of fatalities falls no higher than 10.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.

Roughly 130 thousand people exposed to shaking

This earthquake may have been felt by around 130 thousand people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS.

An estimated 210 people were exposed to level IV. At this level, light shaking and likely no damage can be expected. The majority of people (roughly 120 thousand) live in an area exposed to level III, where weak shaking and probably no damage is expected. All exposure to shaking was within the borders of Japan .

Nearby towns and cities

This earthquake may have been felt in Japan . Located 108 kilometer (67 mi) north of the epicenter of this earthquake, Naze (Kagoshima, Japan) is the nearest significant population center. The intensity of shaking and damage in Naze is estimated to be around level III on the Modified Mercalli Intensity scale (weak shaking, probably no damage).

A complete list of nearby places is included below. Estimated intensity data (MMI) sourced from a shake-map published by the US Geographic Survey is shown where available (cities without data probably experienced little impact).

Overview of nearby places

Earthquake Intensity Map

The graph below overlays a map of the region around the epicenter with earthquake intensity data provided by the US Geographic Survey. The highest intensity level detected for this earthquake is IV.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

41 Aftershocks detected

This main shock was followed by 41 smaller aftershocks. Just 1 day after this main shock, an earthquake measuring MAG-5.2 was detected 1.7 km (1.1 mi) south-southwest of this earthquake.

Before this earthquake struck, 8 smaller foreshocks occurred. Nearby this earthquake a foreshock struck 1 min earlier. It measured a magnitude of 4.9

Overview of foreshocks and aftershocks

More earthquakes coming?

The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.

It's always adviced to be cautious of the risk of a larger shock following any significant earthquake, however this risk is fairly small. There is a roughly 94 percent change that no larger main shock will follow in the days following this earthquake.

Earthquakes like this happen often in the region

Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since April 2nd, 2025, when a 6.1 magnitude earthquake hit 274 km (170 mi) further north-east. An even stronger magnitude 6.7 earthquake struck on November 13th, 2015.

In total, 45 earthquakes with a magnitude of 5.4 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 3 months.

Low tsunami risk

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Sources

Last updated 19/07/25 03:28 (). This article contains currently available information about the earthquake and is automatically composed. We continue to update this article up to a few days after the earthquake occurred.

1. US Geographic Society (USGS): Earthquake us7000q9fs
2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20250629_0000014
3. Geonames.org: World Cities Database
4. Google Maps: Static API
5. Earthquakelist.org: Historic Earthquakes Database

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