Japan earthquakes

M7.8 earthquake 105 km E of Iwaki, Japan

A magnitude 7.8 earthquake struck 105 km E of Iwaki, Japan on Sat, Nov 5, 1938, 5:43 PM JST (08:43 UTC), 35 km (22 mi) below the surface.

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
7.8 (mw), major
Local time
UTC
1938-11-05 08:43:24 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
36.971° N, 142.065° E
Region
Japan
Strongest shaking
VI, strong shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
VI, strong shaking
Peak ground acceleration
14.2% of gravity
Peak ground velocity
3.1 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.30
Depth from
From location

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 36 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 7.7116 km ESE of Namie, Japan · 32099 days ago · 35 km deep · 25 km away
  2. 6.0131 km ESE of Namie, Japan · 32098 days ago · 25 km deep · 28 km away
  3. 7.7116 km E of Namie, Japan · 32098 days ago · 30 km deep · 50 km away
  4. 5.8173 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 67 km away
  5. 6.2109 km E of Namie, Japan · 32097 days ago · 25 km deep · 44 km away
  6. 5.6156 km ESE of Iwaki, Japan · 32097 days ago · 25 km deep · 56 km away
  7. 6.3105 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 9 km away
  8. 7.6141 km ESE of Namie, Japan · 32097 days ago · 25 km deep · 38 km away
  9. 6.2119 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 16 km away
  10. 6.8130 km ESE of Namie, Japan · 32097 days ago · 30 km deep · 27 km away
  11. 6.364 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 42 km away
  12. 6.5127 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 23 km away
  13. 6.4167 km E of Namie, Japan · 32096 days ago · 25 km deep · 84 km away
  14. 6.5156 km ESE of Iwaki, Japan · 32096 days ago · 30 km deep · 56 km away
  15. 5.6132 km E of Namie, Japan · 32095 days ago · 25 km deep · 50 km away
  16. 6.9174 km ESE of Iwaki, Japan · 32095 days ago · 15 km deep · 79 km away
  17. 5.8129 km ESE of Iwaki, Japan · 32094 days ago · 25 km deep · 35 km away
  18. 6.2165 km ESE of Namie, Japan · 32090 days ago · 25 km deep · 62 km away
  19. 6.271 km ESE of Namie, Japan · 32087 days ago · 25 km deep · 48 km away
  20. 6.8155 km ESE of Iwaki, Japan · 32082 days ago · 25 km deep · 56 km away
  21. 6.0149 km ESE of Iwaki, Japan · 32082 days ago · 25 km deep · 55 km away
  22. 5.7127 km ESE of Iwaki, Japan · 32082 days ago · 25 km deep · 30 km away
  23. 5.6151 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 52 km away
  24. 5.7136 km E of Iwaki, Japan · 32080 days ago · 25 km deep · 33 km away
  25. 6.392 km E of Iwaki, Japan · 32079 days ago · 25 km deep · 15 km away
  26. 5.894 km E of Iwaki, Japan · 32078 days ago · 25 km deep · 15 km away
  27. 5.8off the east coast of Honshu, Japan · 32078 days ago · 25 km deep · 63 km away
  28. 6.5127 km ESE of Iwaki, Japan · 32074 days ago · 25 km deep · 37 km away
  29. 7.099 km E of Iwaki, Japan · 32074 days ago · 30 km deep · 9 km away
  30. 5.9178 km ESE of Namie, Japan · 32071 days ago · 25 km deep · 79 km away
  31. 6.5100 km ESE of Iwaki, Japan · 32070 days ago · 25 km deep · 18 km away
  32. 5.877 km E of Iwaki, Japan · 32070 days ago · 25 km deep · 30 km away
  33. 5.859 km E of Iwaki, Japan · 32068 days ago · 25 km deep · 48 km away
  34. 5.9142 km ESE of Iwaki, Japan · 32065 days ago · 25 km deep · 45 km away
  35. 5.786 km ESE of Iwaki, Japan · 32061 days ago · 25 km deep · 40 km away
  36. 5.859 km E of Iwaki, Japan · 32051 days ago · 25 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem902740. Read Tue, Sep 22, 2026, 10:31 PM UTC.