Significant M5.8 Earthquake struck on Friday Afternoon near Chiba in Japan.

Written by Earthquakelist.org on June 26th, 2026.

A significant Magnitude 5.8 earthquake struck under land 36 kilometer from Chiba in Japan in the early afternoon of Friday June 26th, 2026. The earthquake struck near a very densely populated region. Shaking may have been felt by a total of 47 million people.

Earthquake Summary

The earthquake struck on land in Japan, 36 kilometer (22 mi) east of Chiba. The center of this earthquake had a quite shallow depth of 43 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 26, 2026 12:46 (Tokyo Time) - Jun 26, 2026 03:46 Universal Time.
Location:	36 km east of Chiba, Japan. Coordinates 35°37'53"N 140°30'36"E.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.8 Detected by 37 stations. Maximum Error Range ±0.051 .
Depth:	43 km (27 mi) A quite shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
Tsunami Risk:	Tsunami very unlikely While this was a shallow earthquake in a coastal area, it appears to have occurred under land (4 km from the sea) with a magnitude that is usually not strong enough 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 90% likelyhood of between 0 and 1 fatalities.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 90% likelyhood of between 0 and 1 million US Dollars in economic damage and impact.

Roughly 47 million people exposed to shaking

An estimated 47 million 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.

Moderate shaking and very light damage may have been experienced by an estimated 87,950 people. At V, it is the highest MMI level this earthquake has caused. Intensity level IV was experienced by the majority of people (around 37 million). In their region, light shaking and likely 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
34,950	II	Very weak	None
9,217,000	III	Weak	Probably none
37,240,000	IV	Light	Likely none
87,950	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 Yōkaichiba in Chiba, Japan. Yōkaichiba is located 8 kilometer (5 mi) southwest of the epicenter. Yōkaichiba experienced an earthquake intensity (MMI Scale) of roughly IV. That level implies light shaking and likely no damage.

Major cities near this earthquake: Tokyo is located 74 km to the west and experienced an intensity of IV (light shaking, likely no damage). Yokohama is located 81 km to the west and experienced an intensity of IV (light shaking, likely no damage). Chiba is located 36 km to the west and experienced an intensity of IV (light shaking, likely no damage).

The table below provides an overview of all places in proximity of today's earthquake. Where available, the estimated intensity on the Modified Mercalli Intensity Scale in each place is included. Places where this information is omitted likely experienced little impact.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
8 km (5 mi) NE from epicenter	Yōkaichiba Chiba, Japan.	IV Light
9 km (6 mi) SW from epicenter	Narutō Chiba, Japan.	V Moderate
16 km (10 mi) SW from epicenter	Tōgane Chiba, Japan.	V Moderate
16 km (10 mi) NE from epicenter	Asahi Chiba, Japan.	IV Light
18 km (11 mi) W from epicenter	Yachimata Chiba, Japan.	IV Light
22 km (14 mi) SW from epicenter	Ōami Chiba, Japan.	V Moderate
24 km (15 mi) NW from epicenter	Shisui Chiba, Japan.	IV Light
24 km (15 mi) NW from epicenter	Narita Chiba, Japan.	IV Light
26 km (16 mi) N from epicenter	Omigawa Chiba, Japan.	V Moderate
27 km (17 mi) W from epicenter	Sakura Chiba, Japan.	IV Light
28 km (17 mi) N from epicenter	Sawara Chiba, Japan.	IV Light
30 km (19 mi) N from epicenter	Katori-shi Chiba, Japan.	IV Light
30 km (19 mi) SW from epicenter	Mobara Chiba, Japan.	IV Light
31 km (19 mi) E from epicenter	Hasaki Chiba, Japan.	IV Light
31 km (19 mi) W from epicenter	Yotsukaidō Chiba, Japan.	IV Light
36 km (22 mi) W from epicenter	Chiba Chiba, Japan.	IV Light
39 km (24 mi) N from epicenter	Kashima-shi Ibaraki, Japan.	IV Light
40 km (25 mi) NW from epicenter	Inashiki Ibaraki, Japan.	IV Light
41 km (25 mi) W from epicenter	Ichihara Chiba, Japan.	IV Light
42 km (26 mi) NW from epicenter	Ryūgasaki Ibaraki, Japan.	IV Light
44 km (27 mi) NW from epicenter	Shiroi Chiba, Japan.	IV Light
48 km (30 mi) W from epicenter	Honchō Chiba, Japan.	IV Light
49 km (30 mi) NW from epicenter	Toride Ibaraki, Japan.	IV Light
50 km (31 mi) NW from epicenter	Ushiku Ibaraki, Japan.	IV Light
52 km (32 mi) NW from epicenter	Abiko Chiba, Japan.	IV Light
54 km (34 mi) NW from epicenter	Kashiwa Chiba, Japan.	IV Light
56 km (35 mi) W from epicenter	Urayasu Tokyo, Japan.	IV Light
57 km (35 mi) W from epicenter	Matsudo Chiba, Japan.	IV Light
59 km (37 mi) SW from epicenter	Kisarazu Chiba, Japan.	IV Light
60 km (37 mi) NW from epicenter	Nagareyama Chiba, Japan.	IV Light
68 km (42 mi) W from epicenter	Sōka Saitama, Japan.	IV Light
68 km (42 mi) NW from epicenter	Noda Chiba, Japan.	IV Light
71 km (44 mi) NW from epicenter	Koshigaya Saitama, Japan.	IV Light
73 km (45 mi) NW from epicenter	Tsukuba Ibaraki, Japan.	IV Light
73 km (45 mi) W from epicenter	Kawasaki Kanagawa, Japan.	IV Light
74 km (46 mi) W from epicenter	Tokyo Tokyo, Japan.	IV Light
75 km (47 mi) W from epicenter	Kawaguchi Saitama, Japan.	IV Light
79 km (49 mi) NW from epicenter	Kasukabe Saitama, Japan.	IV Light
80 km (50 mi) N from epicenter	Mito Ibaraki, Japan.	IV Light
81 km (50 mi) W from epicenter	Yokohama Kanagawa, Japan.	IV Light
83 km (52 mi) W from epicenter	Saitama Saitama, Japan.	IV Light
86 km (53 mi) SW from epicenter	Yokosuka Kanagawa, Japan.	IV Light
87 km (54 mi) W from epicenter	Chōfu Tokyo, Japan.	IV Light
87 km (54 mi) W from epicenter	Kamirenjaku Tokyo, Japan.	IV Light
88 km (55 mi) W from epicenter	Nishi-Tokyo-shi Tokyo, Japan.	IV Light
89 km (55 mi) NW from epicenter	Ageoshimo Saitama, Japan.	IV Light
96 km (60 mi) W from epicenter	Tokorozawa Saitama, Japan.	IV Light
96 km (60 mi) W from epicenter	Machida Tokyo, Japan.	IV Light
97 km (60 mi) W from epicenter	Kawagoe Saitama, Japan.	IV Light
98 km (61 mi) NW from epicenter	Oyama Tochigi, Japan.	IV Light
98 km (61 mi) W from epicenter	Minamirinkan Kanagawa, Japan.	IV Light
99 km (62 mi) W from epicenter	Fujisawa Kanagawa, Japan.	IV Light
154 km (96 mi) NW from epicenter	Maebashi Gunma, Japan.	III Weak
161 km (100 mi) N from epicenter	Iwaki Fukushima, Japan.	III Weak
173 km (107 mi) W from epicenter	Fuji Shizuoka, Japan.	III Weak
176 km (109 mi) W from epicenter	Kōfu Yamanashi, Japan.	III Weak
238 km (148 mi) NW from epicenter	Nagano Nagano, Japan.
284 km (176 mi) NW from epicenter	Niigata Niigata, Japan.
290 km (180 mi) N from epicenter	Yamagata Yamagata, Japan.
295 km (183 mi) N from epicenter	Sendai Miyagi, Japan.
319 km (198 mi) W from epicenter	Toyama Toyama, Japan.
330 km (205 mi) W from epicenter	Nagoya Aichi, Japan.
340 km (211 mi) W from epicenter	Gifu-shi Gifu, Japan.
361 km (224 mi) W from epicenter	Yokkaichi Mie, Japan.
366 km (227 mi) W from epicenter	Kanazawa Ishikawa, Japan.
369 km (229 mi) N from epicenter	Ichinoseki Iwate, Japan.
388 km (241 mi) W from epicenter	Hikone Shiga, Japan.
389 km (242 mi) W from epicenter	Fukui-shi Fukui, Japan.
393 km (244 mi) N from epicenter	Yuzawa Akita, Japan.

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 V.

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 60 people

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 60 people have reported shaking in 26 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: 22 people.
Yokohama, Kanagawa, Japan: 6 people.
Kawasaki, Kanagawa, Japan: 5 people.
Urayasu, Chiba, Japan: 2 people.
Utsunomiya, Tochigi, Japan: 2 people.
Naka, Ibaraki, Japan: 2 people.
Yokosuka, Kanagawa, Japan: 2 people.
Yachimata, Chiba, Japan: 1 person.
Kokubunji, Tokio, Japan: 1 person.
Fuji, Shizuoka, Japan: 1 person.

4 Aftershocks detected

After this earthquake struck, 4 smaller aftershocks occurred. A 4.1 magnitude earthquake hit 45 mins later 24 km (15 mi) east of this earthquake.

In the days before this main shock, 1 smaller foreshock was detected. Nearby this earthquake a foreshock struck 57 mins earlier. It measured a magnitude of 4.1

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Foreshock	M 4.1	57 mins earlier Jun 26, 2026 11:49 (Tokyo Time)	76 km (47 mi) NW from Main Shock.
Main Shock This Earthquake	M 5.8	Jun 26, 2026 12:46 (Tokyo Time)	-
Aftershock	M 3.1	6 mins later Jun 26, 2026 12:52 (Tokyo Time)	11 km (7 mi) NE from Main Shock.
Aftershock	M 3.9	14 mins later Jun 26, 2026 13:00 (Tokyo Time)	11 km (7 mi) NE from Main Shock.
Aftershock	M 3.5	36 mins later Jun 26, 2026 13:22 (Tokyo Time)	11 km (7 mi) NE from Main Shock.
Aftershock	M 4.1	45 mins later Jun 26, 2026 13:31 (Tokyo Time)	24 km (15 mi) E from Main Shock.

More earthquakes coming?

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

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, 2025, when a 5.9 magnitude earthquake hit 220 km (137 mi) further north-east. An even stronger magnitude 7.3 earthquake struck on March 16th, 2022.

In total, 21 earthquakes with a magnitude of 5.8 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.

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 (4 km from the sea).	Not this earthquake. This earthquake had a magnitude of 5.8. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 43 km (27 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 26/06/26 18:18 (). 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.