Written by on . Last updated June 13th, 2024.

A significant MAG-5.5 earthquake struck in the Philippine Sea 266 kilometer from Hamamatsu, Japan in the night of Thursday May 30th, 2024. Around 150 thousand people have been exposed to shaking.

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Earthquake Summary

This earthquake hit under water in the Philippine Sea, 228 kilometers (142 mi) off the coast of Japan, 266 kilometer south of Hamamatsu in Shizuoka. The center of this earthquake had a deep depth of 392 km.

Date and Time: May 30, 2024 02:14 (Tokyo Time)
- May 29, 2024 17:14 Universal Time.
Location: 266 km south of Hamamatsu, Shizuoka, Japan.
Coordinates 32°18'53"N 137°33'55"E.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 5.5
Detected by 37 stations. Maximum Error Range ±0.051 .
Depth: 392 km (244 mi)
A deep depth.
Max. Intensity:
III
Weak

On the Modified Mercalli Scale.
Tsunami Risk: Tsunami very unlikely
Earthquakes under MAG-6.5 at depths deeper than 100km are very unlikely to 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 150 thousand people exposed to shaking

The USGS has published a report estimating the number of people exposed to this earthquake. Acoording to their analysis, roughly 150 thousand have been exposed to shaking at an MMI level of II or higher.

The highest earthquake impact level for this earthquake is II, which corresponds with very weak shaking and no damage. Roughly 154,700 people are expected to be exposed to this level. All exposure to shaking was within the borders of Japan .

People MMI Level Shaking Damage
0
I
Not noticable None
154,700
II
Very weak None
0
III
Weak Probably none
0
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 . Located 210 kilometer (130 mi) south-east of the epicenter of this earthquake, Kushimoto (Wakayama, Japan) is the nearest significant population center. The intensity of shaking and damage in Kushimoto is estimated to be around level II on the Modified Mercalli Intensity scale (very weak shaking, no damage).

Multiple large cities are in proximity of today's earthquake. Hamamatsu is located 266 km to the north (intensity unknown, possibly low). Toyohashi is located 273 km to the north (intensity unknown, possibly low). Okazaki is located 295 km to the north (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)
210 km (130 mi)
NW from epicenter
Kushimoto

Wakayama, Japan.
II
Weak
216 km (134 mi)
NW from epicenter
Shingū

Wakayama, Japan.
II
Weak
233 km (145 mi)
NW from epicenter
Owase

Mie, Japan.
II
Weak
250 km (155 mi)
NNW from epicenter
Toba

Mie, Japan.
254 km (158 mi)
NNW from epicenter
Ise

Mie, Japan.
257 km (160 mi)
NW from epicenter
Shirahama

Wakayama, Japan.
259 km (161 mi)
NW from epicenter
Tanabe

Wakayama, Japan.
262 km (163 mi)
NNE from epicenter
Ōyama

Shizuoka, Japan.
263 km (163 mi)
N from epicenter
Tahara

Aichi, Japan.
265 km (165 mi)
N from epicenter
Kosai

Shizuoka, Japan.
266 km (165 mi)
N from epicenter
Hamamatsu

Shizuoka, Japan.
267 km (166 mi)
N from epicenter
Iwata

Shizuoka, Japan.
270 km (168 mi)
N from epicenter
Kikugawa

Shizuoka, Japan.
270 km (168 mi)
NNE from epicenter
Sagara

Shizuoka, Japan.
273 km (170 mi)
N from epicenter
Fukuroi

Shizuoka, Japan.
273 km (170 mi)
NNW from epicenter
Toyohama

Aichi, Japan.
273 km (170 mi)
N from epicenter
Toyohashi

Aichi, Japan.
276 km (171 mi)
N from epicenter
Kakegawa

Shizuoka, Japan.
277 km (172 mi)
N from epicenter
Hamakita

Shizuoka, Japan.
277 km (172 mi)
N from epicenter
Kozakai-chō

Aichi, Japan.
279 km (173 mi)
N from epicenter
Toyokawa

Aichi, Japan.
281 km (175 mi)
NNW from epicenter
Hisai-motomachi

Mie, Japan.
281 km (175 mi)
N from epicenter
Ishiki

Aichi, Japan.
282 km (175 mi)
N from epicenter
Gamagōri

Aichi, Japan.
283 km (176 mi)
NW from epicenter
Gobō

Wakayama, Japan.
283 km (176 mi)
N from epicenter
Kanaya

Shizuoka, Japan.
284 km (176 mi)
N from epicenter
Shimada

Shizuoka, Japan.
285 km (177 mi)
NW from epicenter
Gojō

Nara, Japan.
286 km (178 mi)
NNW from epicenter
Tsu

Mie, Japan.
287 km (178 mi)
NW from epicenter
Hashimoto

Wakayama, Japan.
288 km (179 mi)
N from epicenter
Shinshiro

Aichi, Japan.
288 km (179 mi)
N from epicenter
Nishio

Aichi, Japan.
288 km (179 mi)
NNW from epicenter
Taketoyo

Aichi, Japan.
290 km (180 mi)
NW from epicenter
Sakurai

Nara, Japan.
291 km (181 mi)
NNE from epicenter
Fujieda

Shizuoka, Japan.
291 km (181 mi)
NNW from epicenter
Nabari

Mie, Japan.
291 km (181 mi)
N from epicenter
Hekinan

Aichi, Japan.
292 km (181 mi)
NW from epicenter
Gose

Nara, Japan.
292 km (181 mi)
NNE from epicenter
Shimoda

Shizuoka, Japan.
292 km (181 mi)
NNE from epicenter
Yaizu

Shizuoka, Japan.
292 km (181 mi)
NNW from epicenter
Handa

Aichi, Japan.
293 km (182 mi)
NNW from epicenter
Tokoname

Aichi, Japan.
294 km (183 mi)
NW from epicenter
Kashihara-shi

Nara, Japan.
294 km (183 mi)
N from epicenter
Takahama

Aichi, Japan.
295 km (183 mi)
N from epicenter
Okazaki

Aichi, Japan.
297 km (185 mi)
N from epicenter
Anjō

Aichi, Japan.
298 km (185 mi)
NW from epicenter
Tawaramoto

Nara, Japan.
299 km (186 mi)
NW from epicenter
Kainan

Wakayama, Japan.
299 km (186 mi)
NNW from epicenter
Tenri

Nara, Japan.
300 km (186 mi)
NW from epicenter
Iwade

Wakayama, Japan.
300 km (186 mi)
NNW from epicenter
Suzuka

Mie, 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 III.

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 4 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 4 people have reported shaking in 3 places, all within 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:

  • Tokyo, Tokio, Japan: 2 people.
  • Narita, Chiba, Japan: 1 person.
  • Komae, Tokio, Japan: 1 person.

Risk of aftershocks?

This earthquake did not have any significant foreshocks nor aftershocks occurring within 100km (62 mi) of its epicenter.

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

In only six percent of cases, significant earthquakes are followed by a larger main shock, making the current earthquake a foreshock. While the chance of this happening is not so large, it is adviced to maintain cautiousness in the hours and days following a major 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 May 14th, 2023, when a 5.6 magnitude earthquake hit 207 km (129 mi) further north-east. An even stronger magnitude 6.3 earthquake struck on July 27th, 2019.

In total, 19 earthquakes with a magnitude of 5.5 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 6 months.

Tsunami very unlikely

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.

For a serious tsunami to occur, earthquakes usually need to have a magnitude of at least 6.5 and occur at a shallow depth of maximum 100km. Neither are the case with this earthquake. However always 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 5.5. Earthquakes of this strength are unlikely to trigger a tsunami.
Not this earthquake.
This earthquake occurred at a depth of 392 km (244 mi). Earthquakes this deep in the earth are unlikely to trigger a tsunami.

Sources

Last updated 13/06/24 01:18 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.

  1. US Geographic Society (USGS): Earthquake us7000mnu8
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20240529_0000204
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

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