Written by on . Last updated July 18th, 2024.

In the North Pacific Ocean 263 kilometer from Yokohama, Japan, a significant M5.4 earthquake occurred in the late afternoon of Tuesday June 25th, 2024. Around 600 thousand people have been exposed to shaking.

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Earthquake Summary

This earthquake hit under water in the North Pacific Ocean, 211 kilometers (131 mi) off the coast of Japan, 263 kilometer south-east of Yokohama in Kanagawa. The center of this earthquake had a quite shallow depth of 31 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time: Jun 25, 2024 17:30 (Tokyo Time)
- Jun 25, 2024 08:30 Universal Time.
Location: 263 km SE of Yokohama, Kanagawa, Japan.
Coordinates 33°29'19"N 141°17'2"E.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 5.4
Detected by 26 stations. Maximum Error Range ±0.061 .
Depth: 31 km (19 mi)
A quite shallow depth.
Max. Intensity:
IV
Light

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 600 thousand people exposed to shaking

An estimated 600 thousand have been exposed to shaking (An MMI or Modified Mercalli Intensity level II or higher) as a result of this earthquake according scientific estimates published by the USGS.

The highest earthquake impact level for this earthquake is IV, which corresponds with light shaking and likely no damage. Roughly 2,640 people are expected to be exposed to this level. Intensity level III was experienced by the majority of people (around 590 thousand). In their region, weak shaking and probably no damage can be expected. All exposure to shaking was within the borders of Japan .

People MMI Level Shaking Damage
0
I
Not noticable None
0
II
Very weak None
593,800
III
Weak Probably none
2,640
IV
Light Likely none
0
V
Moderate Very light
0
VI
Strong Light
0
VII
Very Strong Moderate
0
VIII
Severe Moderate to heavy
0
IX
Violent Heavy
0
X
Extreme Very heavy

Nearby towns and cities

This earthquake may have been felt in Japan . The closest significant population center near the earthquake is Katsuura in Chiba, Japan. Katsuura is located 205 kilometer (127 mi) south-southeast of the epicenter. Katsuura experienced an earthquake intensity (MMI Scale) of roughly III. That level implies weak shaking and probably no damage.

Multiple large cities are in proximity of today's earthquake. Tokyo is located 285 km to the north-northwest (intensity unknown, possibly low). Yokohama is located 263 km to the northwest (intensity unknown, possibly low). Kawasaki is located 268 km to the north-northwest (intensity unknown, possibly low).

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

Distance Place Intensity (MMI)
205 km (127 mi)
NNW from epicenter
Katsuura

Chiba, Japan.
III
Weak
211 km (131 mi)
NW from epicenter
Tateyama

Chiba, Japan.
III
Weak
234 km (145 mi)
NNW from epicenter
Mobara

Chiba, Japan.
244 km (152 mi)
NNW from epicenter
Tōgane

Chiba, Japan.
244 km (152 mi)
NNW from epicenter
Kimitsu

Chiba, Japan.
244 km (152 mi)
NNW from epicenter
Kisarazu

Chiba, Japan.
249 km (155 mi)
NW from epicenter
Yokosuka

Kanagawa, Japan.
251 km (156 mi)
NNW from epicenter
Ichihara

Chiba, Japan.
256 km (159 mi)
NNW from epicenter
Yachimata

Chiba, Japan.
257 km (160 mi)
NW from epicenter
Kamakura

Kanagawa, Japan.
258 km (160 mi)
NNW from epicenter
Chiba

Chiba, Japan.
261 km (162 mi)
NW from epicenter
Itō

Shizuoka, Japan.
261 km (162 mi)
NNW from epicenter
Yotsukaidō

Chiba, Japan.
263 km (163 mi)
NW from epicenter
Yokohama

Kanagawa, Japan.
265 km (165 mi)
NW from epicenter
Fujisawa

Kanagawa, Japan.
266 km (165 mi)
NNW from epicenter
Sakura

Chiba, Japan.
268 km (167 mi)
NW from epicenter
Chigasaki

Kanagawa, Japan.
268 km (167 mi)
NNW from epicenter
Kawasaki

Kanagawa, Japan.
270 km (168 mi)
NNW from epicenter
Narita

Chiba, Japan.
271 km (168 mi)
NW from epicenter
Hiratsuka

Kanagawa, Japan.
273 km (170 mi)
NNW from epicenter
Honchō

Chiba, Japan.
274 km (170 mi)
NNW from epicenter
Urayasu

Tokyo, Japan.
277 km (172 mi)
NNW from epicenter
Katori-shi

Chiba, Japan.
277 km (172 mi)
NW from epicenter
Odawara

Kanagawa, Japan.
279 km (173 mi)
NW from epicenter
Atsugi

Kanagawa, Japan.
279 km (173 mi)
NW from epicenter
Isehara

Kanagawa, Japan.
280 km (174 mi)
NW from epicenter
Minamirinkan

Kanagawa, Japan.
282 km (175 mi)
NW from epicenter
Zama

Kanagawa, Japan.
282 km (175 mi)
NW from epicenter
Hadano

Kanagawa, Japan.
283 km (176 mi)
NW from epicenter
Mishima

Shizuoka, Japan.
283 km (176 mi)
NW from epicenter
Machida

Tokyo, Japan.
284 km (176 mi)
NNW from epicenter
Matsudo

Chiba, Japan.
285 km (177 mi)
NW from epicenter
Numazu

Shizuoka, Japan.
285 km (177 mi)
NNW from epicenter
Tokyo

Tokyo, Japan.
286 km (178 mi)
NNW from epicenter
Ryūgasaki

Ibaraki, Japan.
289 km (180 mi)
NW from epicenter
Chōfu

Tokyo, Japan.
289 km (180 mi)
NNW from epicenter
Abiko

Chiba, Japan.
290 km (180 mi)
NNW from epicenter
Kashiwa

Chiba, Japan.
290 km (180 mi)
NNW from epicenter
Toride

Ibaraki, Japan.
291 km (181 mi)
NNW from epicenter
Yashio

Saitama, Japan.
292 km (181 mi)
NNW from epicenter
Kamirenjaku

Tokyo, Japan.
292 km (181 mi)
NNW from epicenter
Nagareyama

Chiba, Japan.
292 km (181 mi)
NW from epicenter
Tama

Tokyo, Japan.
293 km (182 mi)
NNW from epicenter
Musashino

Tokyo, Japan.
294 km (183 mi)
NNW from epicenter
Sōka

Saitama, Japan.
295 km (183 mi)
NNW from epicenter
Kawaguchi

Saitama, Japan.
296 km (184 mi)
NNW from epicenter
Nishi-Tokyo-shi

Tokyo, Japan.
297 km (185 mi)
NNW from epicenter
Shimotoda

Saitama, Japan.
297 km (185 mi)
NW from epicenter
Kokubunji

Tokyo, Japan.
298 km (185 mi)
NW from epicenter
Hino

Tokyo, Japan.
300 km (186 mi)
NNW from epicenter
Asaka

Saitama, Japan.
300 km (186 mi)
NNW from epicenter
Koshigaya

Saitama, Japan.
Cities and Towns around the epicenter of this earthquake.

Earthquake Intensity Map

The intensity in shaking and damage by this earthquake is illustrated through the map below. The highest intensity measured 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
Earthquake Intensity Map based on Shakemap Data provided by USGS.

Shaking reported by 1 person

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 1 person has reported shaking in one place in Japan.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

  • Kashiwa, Chiba, Japan: 1 person.

Aftershocks detected

Since this main shock, 1 smaller aftershock was detected. At a distance of 60 km (37 mi) north-northeast of this earthquake, an aftershock struck 2 days later. It measured a magnitude of 4.7

Overview of foreshocks and aftershocks

Classification Magnitude When Where
Main Shock
This Earthquake
M 5.4 Jun 25, 2024 17:30
(Tokyo Time)
-
Aftershock M 4.7 2 days later
Jun 28, 2024 01:19 (Tokyo Time)
60 km (37 mi)
NNE from Main Shock.
Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.

More earthquakes coming?

Earthquakes can create aftershocks. These are generally at least 1 magnitude lower than any main shock, and as time passes the chance and strength of aftershocks decreases.

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.

Read: How to Stay Safe during an Earthquake (cdc.gov).

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 October 4th, 2023, when a 5.6 magnitude earthquake hit 277 km (172 mi) further south-southeast. An even stronger magnitude 6.3 earthquake struck on November 29th, 2021.

In total, 46 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

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

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

Factor Under Sea? MAG-6.5 or stronger? Shallow depth?
Explanation Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami. Under MAG 6.5: Very unlikely to cause a tsunami.
MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes.
MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.
Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake This earthquake appears to have struck under the sea. Not this earthquake.
This earthquake had a magnitude of 5.4. Earthquakes of this strength are unlikely to trigger a tsunami.
This earthquake occurred at a depth of of 31 km (19 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 18/07/24 11:48 (). 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 us6000n82p
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20240625_0000088
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

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