Japan earthquakes

M4.1 earthquake 75 km ESE of Iwaki, Japan

A magnitude 4.1 earthquake struck 75 km ESE of Iwaki, Japan on Mon, Jun 20, 2016, 9:27 AM JST (00:27 UTC), 40 km (25 mi) below the surface.

A larger quake followed: M5.7 119 km E of Iwaki, Japan. This one was a foreshock.

Iwaki forecastMore in Japan

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-06-20 00:27:17 UTC
Depth
39.8 km (24.7 mi), shallow
Epicenter
36.813° N, 141.680° E
Region
Japan
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 8.2 km horizontally, 12.1 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
157°
Stations used
20

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.2105 km E of Namie, Japan · 3754 days ago · 22 km deep · 72 km away
  2. 5.7119 km E of Iwaki, Japan · 3753 days ago · 13 km deep · 52 km away · felt by 24
  3. 4.6122 km ESE of Namie, Japan · 3753 days ago · 23 km deep · 57 km away
  4. 4.330 km ESE of ?arai, Japan · 3748 days ago · 29 km deep · 93 km away
  5. 4.539 km ENE of Iwaki, Japan · 3741 days ago · 45 km deep · 52 km away · felt by 1
  6. 4.7123 km ESE of Iwaki, Japan · 3738 days ago · 10 km deep · 49 km away
  7. 4.430 km ESE of Iwaki, Japan · 3737 days ago · 37 km deep · 45 km away
  8. 4.597 km ESE of Iwaki, Japan · 3732 days ago · 21 km deep · 24 km away
  9. 4.4105 km ESE of Iwaki, Japan · 3732 days ago · 10 km deep · 32 km away
  10. 4.421 km SE of Takahagi, Japan · 3730 days ago · 48 km deep · 73 km away · felt by 2
  11. 5.315 km SE of Hitachi, Japan · 3722 days ago · 46 km deep · 90 km away · felt by 125
  12. 4.35 km SE of Iwaki, Japan · 3722 days ago · 32 km deep · 71 km away
  13. 4.252 km E of Iwaki, Japan · 3705 days ago · 77 km deep · 41 km away
  14. 4.745 km E of Namie, Japan · 3704 days ago · 42 km deep · 76 km away · felt by 3
  15. 5.664 km E of Namie, Japan · 3703 days ago · 33 km deep · 67 km away · felt by 55
  16. 4.415 km NNE of Kitaibaraki, Japan · 3702 days ago · 2 km deep · 78 km away
  17. 4.460 km ESE of Namie, Japan · 3702 days ago · 46 km deep · 58 km away · felt by 1

Before

  1. 4.323 km ENE of ?arai, Japan · 3762 days ago · 15 km deep · 89 km away · felt by 8
  2. 4.391 km E of Namie, Japan · 3762 days ago · 37 km deep · 67 km away
  3. 4.217 km E of Iwaki, Japan · 3769 days ago · 48 km deep · 61 km away
  4. 4.366 km E of Namie, Japan · 3773 days ago · 38 km deep · 68 km away
  5. 4.489 km E of Namie, Japan · 3776 days ago · 32 km deep · 67 km away
  6. 4.535 km SE of Hitachi, Japan · 3787 days ago · 53 km deep · 77 km away · felt by 6
  7. 4.1126 km ESE of Iwaki, Japan · 3788 days ago · 25 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us200066hx. Read Mon, Oct 5, 2026, 2:46 PM UTC.