Japan earthquakes

M7.0 earthquake 99 km E of Iwaki, Japan

A magnitude 7.0 earthquake struck 99 km E of Iwaki, Japan on Wed, Nov 30, 1938, 11:29 AM JST (02:29 UTC), 30 km (19 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
7.0 (mw), major
Local time
UTC
1938-11-30 02:29:51 UTC
Depth
30.0 km (18.6 mi), shallow
Epicenter
37.036° N, 142.002° E
Region
Japan
Strongest shaking
V, moderate 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
V, moderate shaking
Peak ground acceleration
5.0% of gravity
Peak ground velocity
1.9 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
±0.20
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: 8 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 5.9178 km ESE of Namie, Japan · 32070 days ago · 25 km deep · 84 km away
  2. 6.5100 km ESE of Iwaki, Japan · 32070 days ago · 25 km deep · 24 km away
  3. 5.877 km E of Iwaki, Japan · 32069 days ago · 25 km deep · 23 km away
  4. 5.859 km E of Iwaki, Japan · 32068 days ago · 25 km deep · 41 km away
  5. 5.9142 km ESE of Iwaki, Japan · 32064 days ago · 25 km deep · 54 km away
  6. 5.786 km ESE of Iwaki, Japan · 32060 days ago · 25 km deep · 42 km away
  7. 5.859 km E of Iwaki, Japan · 32050 days ago · 25 km deep · 40 km away
  8. 5.733 km E of Iwaki, Japan · 32018 days ago · 35 km deep · 66 km away

Before

  1. 6.5127 km ESE of Iwaki, Japan · 32074 days ago · 25 km deep · 45 km away
  2. 5.8off the east coast of Honshu, Japan · 32077 days ago · 25 km deep · 62 km away
  3. 5.894 km E of Iwaki, Japan · 32077 days ago · 25 km deep · 6 km away
  4. 6.392 km E of Iwaki, Japan · 32078 days ago · 25 km deep · 7 km away
  5. 5.7136 km E of Iwaki, Japan · 32080 days ago · 25 km deep · 42 km away
  6. 5.6151 km ESE of Iwaki, Japan · 32080 days ago · 25 km deep · 61 km away
  7. 5.7127 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 39 km away
  8. 6.0149 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 64 km away
  9. 6.8155 km ESE of Iwaki, Japan · 32081 days ago · 25 km deep · 65 km away
  10. 6.271 km ESE of Namie, Japan · 32087 days ago · 25 km deep · 39 km away
  11. 6.2165 km ESE of Namie, Japan · 32089 days ago · 25 km deep · 68 km away
  12. 5.8129 km ESE of Iwaki, Japan · 32094 days ago · 25 km deep · 44 km away
  13. 6.9174 km ESE of Iwaki, Japan · 32094 days ago · 15 km deep · 88 km away
  14. 5.6132 km E of Namie, Japan · 32095 days ago · 25 km deep · 50 km away
  15. 6.5156 km ESE of Iwaki, Japan · 32096 days ago · 30 km deep · 65 km away
  16. 6.4167 km E of Namie, Japan · 32096 days ago · 25 km deep · 86 km away
  17. 6.5127 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 28 km away
  18. 6.364 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 35 km away
  19. 6.8130 km ESE of Namie, Japan · 32096 days ago · 30 km deep · 32 km away
  20. 6.2119 km E of Iwaki, Japan · 32096 days ago · 25 km deep · 20 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem902835. Read Tue, Sep 22, 2026, 7:34 AM UTC.