Japan earthquakes

M6.8 earthquake 155 km ESE of Iwaki, Japan

A magnitude 6.8 earthquake struck 155 km ESE of Iwaki, Japan on Tue, Nov 22, 1938, 10:14 AM JST (01:14 UTC), 25 km (16 mi) below the surface.

A larger quake followed: M7.0 99 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
6.8 (mw), strong
Local time
UTC
1938-11-22 01:14:05 UTC
Depth
25.0 km (15.5 mi), shallow
Epicenter
36.656° N, 142.554° 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.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.20
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: 15 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 6.0149 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 11 km away
  2. 5.7127 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 28 km away
  3. 5.6151 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 4 km away
  4. 5.7136 km E of Iwaki, Japan · 32080 days ago · 25 km deep · 24 km away
  5. 6.392 km E of Iwaki, Japan · 32078 days ago · 25 km deep · 70 km away
  6. 5.894 km E of Iwaki, Japan · 32077 days ago · 25 km deep · 71 km away
  7. 5.8off the east coast of Honshu, Japan · 32077 days ago · 25 km deep · 81 km away
  8. 6.5127 km ESE of Iwaki, Japan · 32074 days ago · 25 km deep · 29 km away
  9. 7.099 km E of Iwaki, Japan · 32073 days ago · 30 km deep · 65 km away
  10. 5.9178 km ESE of Namie, Japan · 32071 days ago · 25 km deep · 58 km away
  11. 6.5100 km ESE of Iwaki, Japan · 32070 days ago · 25 km deep · 55 km away
  12. 5.877 km E of Iwaki, Japan · 32069 days ago · 25 km deep · 86 km away
  13. 5.9142 km ESE of Iwaki, Japan · 32064 days ago · 25 km deep · 13 km away
  14. 5.786 km ESE of Iwaki, Japan · 32061 days ago · 25 km deep · 72 km away
  15. 5.859 km E of Iwaki, Japan · 32050 days ago · 25 km deep · 99 km away

Before

  1. 6.2165 km ESE of Namie, Japan · 32089 days ago · 25 km deep · 43 km away
  2. 7.1200 km ESE of Iwaki, Japan · 32090 days ago · 35 km deep · 46 km away
  3. 5.8129 km ESE of Iwaki, Japan · 32094 days ago · 25 km deep · 26 km away
  4. 6.9174 km ESE of Iwaki, Japan · 32094 days ago · 15 km deep · 23 km away
  5. 5.6132 km E of Namie, Japan · 32095 days ago · 25 km deep · 69 km away
  6. 6.5156 km ESE of Iwaki, Japan · 32096 days ago · 30 km deep · 3 km away
  7. 6.4167 km E of Namie, Japan · 32096 days ago · 25 km deep · 83 km away
  8. 6.5127 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 44 km away
  9. 6.364 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 96 km away
  10. 6.8130 km ESE of Namie, Japan · 32096 days ago · 30 km deep · 46 km away
  11. 6.2119 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 50 km away
  12. 7.6141 km ESE of Namie, Japan · 32097 days ago · 25 km deep · 40 km away
  13. 6.3105 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 52 km away
  14. 5.6156 km ESE of Iwaki, Japan · 32097 days ago · 25 km deep · 3 km away
  15. 6.2109 km E of Namie, Japan · 32097 days ago · 25 km deep · 82 km away
  16. 5.8173 km E of Iwaki, Japan · 32097 days ago · 25 km deep · 38 km away
  17. 7.7116 km E of Namie, Japan · 32097 days ago · 30 km deep · 84 km away
  18. 6.0131 km ESE of Namie, Japan · 32098 days ago · 25 km deep · 44 km away
  19. 7.7116 km ESE of Namie, Japan · 32098 days ago · 35 km deep · 61 km away
  20. 7.8105 km E of Iwaki, Japan · 32098 days ago · 35 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem902816. Read Tue, Sep 22, 2026, 12:13 PM UTC.