Japan earthquakes

M3.8 earthquake 47 km ENE of Iwaki, Japan

A magnitude 3.8 earthquake struck 47 km ENE of Iwaki, Japan on Thu, Dec 8, 2016, 5:08 AM JST (20:08 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M5.9 13 km NE of Daigo, 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
3.8 (Mwr, regional moment), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-12-07 20:08:33 UTC
Depth
4.2 km (2.6 mi), shallow
Epicenter
37.174° N, 141.390° E
Region
Japan
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

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

Recorded (1 JMA) in Fukushima, Miyagi and Yamagata.

From the USGS event page for us20007z06. 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Normal
Moment magnitude
3.8 Mwr
Nodal plane 1
Strike 6°, dip 52°, rake -112°
Nodal plane 2
Strike 219°, dip 43°, rake -65°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.0 km horizontally, 3.4 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
110°
Stations used
46

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 107 in the 30 days before it.

After

  1. 4.648 km E of Namie, Japan · 3587 days ago · 9 km deep · 30 km away · felt by 4
  2. 4.647 km ESE of Namie, Japan · 3579 days ago · 40 km deep · 17 km away
  3. 4.458 km ESE of Namie, Japan · 3577 days ago · 33 km deep · 17 km away
  4. 4.160 km ESE of Namie, Japan · 3576 days ago · 35 km deep · 19 km away
  5. 4.4near the east coast of Honshu, Japan · 3576 days ago · 58 km deep · 94 km away
  6. 5.150 km E of Namie, Japan · 3576 days ago · 10 km deep · 29 km away · felt by 11
  7. 4.442 km E of Iwaki, Japan · 3575 days ago · 32 km deep · 10 km away
  8. 4.538 km E of Namie, Japan · 3572 days ago · 35 km deep · 32 km away · felt by 1
  9. 5.1106 km ESE of Iwaki, Japan · 3571 days ago · 23 km deep · 74 km away · felt by 7
  10. 4.6105 km ESE of Iwaki, Japan · 3571 days ago · 35 km deep · 70 km away · felt by 1
  11. 4.786 km ESE of Iwaki, Japan · 3571 days ago · 43 km deep · 52 km away · felt by 1
  12. 4.4106 km ESE of Iwaki, Japan · 3571 days ago · 44 km deep · 74 km away
  13. 4.4103 km ESE of Iwaki, Japan · 3570 days ago · 36 km deep · 67 km away
  14. 4.663 km ESE of Hitachi, Japan · 3568 days ago · 33 km deep · 85 km away
  15. 5.913 km NE of Daigo, Japan · 3567 days ago · 7 km deep · 91 km away · felt by 178
  16. 4.76 km WNW of Kitaibaraki, Japan · 3567 days ago · 10 km deep · 75 km away · felt by 1
  17. 4.414 km NW of Hitachi, Japan · 3566 days ago · 36 km deep · 95 km away
  18. 5.142 km ESE of Namie, Japan · 3564 days ago · 9 km deep · 23 km away · felt by 19
  19. 5.217 km SSE of Iwaki, Japan · 3560 days ago · 53 km deep · 50 km away · felt by 57
  20. 4.445 km ENE of Iwaki, Japan · 3559 days ago · 10 km deep · 3 km away
  21. 5.339 km ENE of Iwaki, Japan · 3559 days ago · 10 km deep · 7 km away · felt by 69
  22. 4.220 km SE of Iwaki, Japan · 3556 days ago · 47 km deep · 44 km away · felt by 2
  23. 4.051 km E of Namie, Japan · 3553 days ago · 15 km deep · 34 km away
  24. 4.417 km W of Namie, Japan · 3553 days ago · 91 km deep · 61 km away
  25. 4.546 km E of Namie, Japan · 3551 days ago · 10 km deep · 35 km away
  26. 4.251 km E of Namie, Japan · 3550 days ago · 10 km deep · 30 km away
  27. 4.830 km ESE of Namie, Japan · 3530 days ago · 25 km deep · 23 km away · felt by 1

Before

  1. 4.287 km SE of Ishinomaki, Japan · 3588 days ago · 35 km deep · 90 km away
  2. 4.428 km E of Namie, Japan · 3590 days ago · 32 km deep · 38 km away
  3. 4.558 km NE of Namie, Japan · 3590 days ago · 63 km deep · 72 km away
  4. 4.761 km ESE of Namie, Japan · 3591 days ago · 3 km deep · 18 km away · felt by 1
  5. 4.944 km SE of Namie, Japan · 3591 days ago · 15 km deep · 10 km away · felt by 3
  6. 4.737 km ESE of Namie, Japan · 3591 days ago · 32 km deep · 15 km away · felt by 1
  7. 4.852 km SE of Namie, Japan · 3591 days ago · 10 km deep · 10 km away
  8. 4.634 km E of Namie, Japan · 3593 days ago · 35 km deep · 37 km away
  9. 4.250 km ESE of Namie, Japan · 3595 days ago · 10 km deep · 12 km away
  10. 4.457 km ESE of Namie, Japan · 3595 days ago · 8 km deep · 19 km away
  11. 4.045 km SE of Namie, Japan · 3597 days ago · 35 km deep · 9 km away
  12. 4.629 km SE of Namie, Japan · 3597 days ago · 22 km deep · 20 km away
  13. 4.344 km SE of Namie, Japan · 3598 days ago · 10 km deep · 7 km away
  14. 4.344 km ESE of Namie, Japan · 3598 days ago · 13 km deep · 13 km away
  15. 4.055 km ESE of Namie, Japan · 3598 days ago · 10 km deep · 15 km away
  16. 4.651 km ESE of Namie, Japan · 3598 days ago · 9 km deep · 27 km away
  17. 4.633 km ESE of Namie, Japan · 3598 days ago · 17 km deep · 21 km away
  18. 4.111 km NW of Namie, Japan · 3600 days ago · 30 km deep · 61 km away
  19. 4.359 km SE of Namie, Japan · 3600 days ago · 23 km deep · 13 km away
  20. 4.261 km ESE of Namie, Japan · 3600 days ago · 31 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20007z06. Read Sun, Oct 4, 2026, 4:38 AM UTC.