Written by on . Last updated August 9th, 2023.

In the night of Sunday June 11th, 2023, a MAG-4.5 earthquake hit under land 6 kilometer from Gobō in Japan. The earthquake struck near a very densely populated region.

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Earthquake Summary

The earthquake struck on land in Japan, 6 kilometer (4 mi) south-southeast of Gobō in Wakayama. The center of this earthquake had a quite shallow depth of 47 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time: Jun 11, 2023 01:20 (Tokyo Time)
- Jun 10, 2023 16:20 Universal Time.
Location: 6 km SSE of Gobō, Wakayama, Japan.
Coordinates 33°50'4"N 135°11'32"E.
Map: Map of area around epicenter.
Map of area around epicenter. Click to open in Google Maps.
Magnitude: MAG 4.5
Detected by 14 stations. Maximum Error Range ±0.145 .
Depth: 47 km (29 mi)
A quite shallow depth.
Tsunami Risk: Tsunami very unlikely
While this was a shallow earthquake in a coastal area, it appears to have occurred under land (1 km from the sea) with a magnitude that is usually not strong enough to cause tsunami's.
Always stay cautious - More info here.

Nearby towns and cities

This earthquake may have been felt in Japan . Gobō in Wakayama, Japan is the nearest significant place from the epicenter. The earthquake occurred 6 kilometer (4 mi) south-southeast of Gobō.

Major cities near this earthquake: Osaka is located 100 km to the north-northeast. Kobe is located 95 km to the north. Kyoto is located 142 km to the north-northeast.

The table below provides an overview of all places in proximity of today's earthquake.

Overview of nearby places

Distance Place
6 km (4 mi)
NNW from epicenter
Gobō

Wakayama, Japan.
20 km (12 mi)
SE from epicenter
Tanabe

Wakayama, Japan.
22 km (14 mi)
SE from epicenter
Shirahama

Wakayama, Japan.
35 km (22 mi)
N from epicenter
Kainan

Wakayama, Japan.
43 km (27 mi)
N from epicenter
Minato

Wakayama, Japan.
44 km (27 mi)
N from epicenter
Wakayama

Wakayama, Japan.
48 km (30 mi)
NNE from epicenter
Iwade

Wakayama, Japan.
51 km (32 mi)
W from epicenter
Anan

Tokushima, Japan.
59 km (37 mi)
WNW from epicenter
Komatsushimachō

Tokushima, Japan.
63 km (39 mi)
NNW from epicenter
Sumoto

Hyōgo, Japan.
63 km (39 mi)
WNW from epicenter
Tokushima

Tokushima, Japan.
64 km (40 mi)
NW from epicenter
Fukura

Hyōgo, Japan.
66 km (41 mi)
NE from epicenter
Hashimoto

Wakayama, Japan.
66 km (41 mi)
N from epicenter
Izumisano

Ōsaka, Japan.
67 km (42 mi)
NW from epicenter
Narutochō-mitsuishi

Tokushima, Japan.
70 km (43 mi)
N from epicenter
Kaizuka

Ōsaka, Japan.
72 km (45 mi)
NNE from epicenter
Kishiwada

Ōsaka, Japan.
74 km (46 mi)
NE from epicenter
Gojō

Nara, Japan.
74 km (46 mi)
E from epicenter
Shingū

Wakayama, Japan.
74 km (46 mi)
WNW from epicenter
Ishii

Tokushima, Japan.
75 km (47 mi)
NNE from epicenter
Izumi

Ōsaka, Japan.
76 km (47 mi)
NNE from epicenter
Izumiōtsu

Ōsaka, Japan.
79 km (49 mi)
NNE from epicenter
Takaishi

Ōsaka, Japan.
83 km (52 mi)
NNE from epicenter
Tondabayashichō

Ōsaka, Japan.
85 km (53 mi)
NE from epicenter
Gose

Nara, Japan.
87 km (54 mi)
NNE from epicenter
Sakai

Ōsaka, Japan.
88 km (55 mi)
NNE from epicenter
Matsubara

Ōsaka, Japan.
92 km (57 mi)
NNE from epicenter
Kashihara

Ōsaka, Japan.
93 km (58 mi)
NE from epicenter
Kashihara-shi

Nara, Japan.
93 km (58 mi)
N from epicenter
Akashi

Hyōgo, Japan.
95 km (59 mi)
NNE from epicenter
Yao

Ōsaka, Japan.
95 km (59 mi)
N from epicenter
Kobe

Hyōgo, Japan.
96 km (60 mi)
ENE from epicenter
Owase

Mie, Japan.
96 km (60 mi)
NE from epicenter
Sakurai

Nara, Japan.
99 km (62 mi)
N from epicenter
Nishinomiya-hama

Hyōgo, Japan.
100 km (62 mi)
N from epicenter
Ashiya

Hyōgo, Japan.
100 km (62 mi)
N from epicenter
Amagasaki

Hyōgo, Japan.
100 km (62 mi)
NNE from epicenter
Osaka

Ōsaka, Japan.
107 km (66 mi)
NNE from epicenter
Suita

Ōsaka, Japan.
108 km (67 mi)
NNE from epicenter
Toyonaka

Ōsaka, Japan.
108 km (67 mi)
N from epicenter
Takarazuka

Hyōgo, Japan.
109 km (68 mi)
NNW from epicenter
Kakogawachō-honmachi

Hyōgo, Japan.
110 km (68 mi)
NNE from epicenter
Nara-shi

Nara, Japan.
111 km (69 mi)
NNE from epicenter
Neyagawa

Ōsaka, Japan.
115 km (71 mi)
NNE from epicenter
Ibaraki

Ōsaka, Japan.
117 km (73 mi)
NNE from epicenter
Hirakata

Ōsaka, Japan.
118 km (73 mi)
NNW from epicenter
Himeji

Hyōgo, Japan.
119 km (74 mi)
NNE from epicenter
Takatsuki

Ōsaka, Japan.
119 km (74 mi)
WNW from epicenter
Takamatsu

Kagawa, Japan.
142 km (88 mi)
NNE from epicenter
Kyoto

Kyoto, Japan.
144 km (89 mi)
NNE from epicenter
Ōtsu

Shiga, Japan.
147 km (91 mi)
NW from epicenter
Okayama

Okayama, Japan.
155 km (96 mi)
WNW from epicenter
Kurashiki

Okayama, Japan.
157 km (98 mi)
WSW from epicenter
Kochi

Kōchi, Japan.
175 km (109 mi)
W from epicenter
Niihama

Ehime, Japan.
183 km (114 mi)
WNW from epicenter
Fukuyama

Hirochima, Japan.
205 km (127 mi)
NNW from epicenter
Tottori

Tottori, Japan.
217 km (135 mi)
NE from epicenter
Nagoya

Aichi, Japan.
228 km (142 mi)
NE from epicenter
Gifu-shi

Gifu, Japan.
253 km (157 mi)
ENE from epicenter
Hamamatsu

Shizuoka, Japan.
265 km (165 mi)
NNE from epicenter
Fukui-shi

Fukui, Japan.
268 km (167 mi)
NW from epicenter
Matsue

Shimane, Japan.
276 km (171 mi)
W from epicenter
Iwakuni

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

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:

  • Tanabe, Wakayama, 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.

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 May 18th, 2023, when a 4.6 magnitude earthquake hit 283 km (176 mi) further west-southwest. An even stronger magnitude 6.3 earthquake struck on July 27th, 2019.

In total, 104 earthquakes with a magnitude of 4.5 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 month.

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.

While MAG-6.5+ earthquakes may cause tsunami's, it appears that the epicenter of this earthquake hit under land. In addition, the reported depth is deeper than 100km, making the risk of a tsunami even less likely. 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 on land near a coastal area (1 km from the sea). Not this earthquake.
This earthquake had a magnitude of 4.5. Earthquakes of this strength are unlikely to trigger a tsunami.
This earthquake occurred at a depth of of 47 km (29 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 09/08/23 10:17 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.

  1. US Geographic Society (USGS): Earthquake us7000k7nk
  2. European-Mediterranean Seismological Centre (EMSC): Earthquake 20230610_0000141
  3. Geonames.org: World Cities Database
  4. Google Maps: Static API
  5. Earthquakelist.org: Historic Earthquakes Database

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