Japan earthquakes

M4.2 earthquake 52 km E of Iwaki, Japan

A magnitude 4.2 earthquake struck 52 km E of Iwaki, Japan on Sat, Aug 13, 2016, 12:56 PM JST (03:56 UTC), 77 km (48 mi) below the surface.

A larger quake followed: M5.6 64 km E of Namie, 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-08-13 03:56:46 UTC
Depth
76.8 km (47.7 mi), intermediate-depth
Epicenter
37.135° N, 141.462° E
Region
Japan
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

Recorded (2 JMA) in Fukushima.

From the USGS event page for us10006dig. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 8.6 km horizontally, 4.9 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
165°
Stations used
28

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 5 in the 30 days before it.

After

  1. 4.745 km E of Namie, Japan · 3704 days ago · 42 km deep · 39 km away · felt by 3
  2. 5.664 km E of Namie, Japan · 3703 days ago · 33 km deep · 38 km away · felt by 55
  3. 4.415 km NNE of Kitaibaraki, Japan · 3702 days ago · 2 km deep · 63 km away
  4. 4.460 km ESE of Namie, Japan · 3701 days ago · 46 km deep · 28 km away · felt by 1
  5. 5.045 km ESE of Kitaibaraki, Japan · 3699 days ago · 37 km deep · 62 km away · felt by 83
  6. 4.861 km E of Namie, Japan · 3688 days ago · 46 km deep · 36 km away · felt by 3
  7. 4.9105 km ESE of Takahagi, Japan · 3688 days ago · 23 km deep · 94 km away · felt by 13
  8. 4.696 km ESE of Takahagi, Japan · 3688 days ago · 22 km deep · 90 km away
  9. 4.2133 km E of Namie, Japan · 3683 days ago · 8 km deep · 99 km away
  10. 4.091 km NE of Hasaki, Japan · 3681 days ago · 23 km deep · 98 km away
  11. 5.448 km ESE of Hitachi, Japan · 3678 days ago · 32 km deep · 88 km away · felt by 53
  12. 4.610 km W of Takahagi, Japan · 3678 days ago · 95 km deep · 90 km away · felt by 15
  13. 4.562 km E of Namie, Japan · 3676 days ago · 39 km deep · 44 km away · felt by 5
  14. 4.5109 km NE of Hasaki, Japan · 3664 days ago · 33 km deep · 100 km away
  15. 4.666 km E of Namie, Japan · 3658 days ago · 18 km deep · 44 km away · felt by 1
  16. 4.428 km E of ?arai, Japan · 3648 days ago · 40 km deep · 100 km away
  17. 4.672 km SE of Ishinomaki, Japan · 3647 days ago · 48 km deep · 86 km away · felt by 1

Before

  1. 4.35 km SE of Iwaki, Japan · 3722 days ago · 32 km deep · 50 km away
  2. 5.315 km SE of Hitachi, Japan · 3722 days ago · 46 km deep · 95 km away · felt by 125
  3. 4.421 km SE of Takahagi, Japan · 3730 days ago · 48 km deep · 78 km away · felt by 2
  4. 4.4105 km ESE of Iwaki, Japan · 3732 days ago · 10 km deep · 61 km away
  5. 4.597 km ESE of Iwaki, Japan · 3732 days ago · 21 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10006dig. Read Mon, Oct 5, 2026, 10:43 AM UTC.