Japan earthquakes

M4.0 earthquake 97 km E of Yamada, Japan

A magnitude 4.0 earthquake struck 97 km E of Yamada, Japan on Thu, Sep 6, 1973, 12:08 PM JST (03:08 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.1 100 km E of Yamada, Japan. This one was a foreshock.

Yamada 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
4.0 (mb), light
Local time
UTC
1973-09-06 03:08:24 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
39.488° N, 143.082° 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.

Depth from
OPERATOR_ASSIGNED
Stations used
12

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 10 in the 30 days before it.

After

  1. 4.1100 km E of Yamada, Japan · 19373 days ago · 28 km deep · 4 km away
  2. 4.1136 km ENE of Miyako, Japan · 19373 days ago · 33 km deep · 58 km away
  3. 4.0131 km ENE of Miyako, Japan · 19371 days ago · 25 km deep · 57 km away
  4. 4.6139 km E of Miyako, Japan · 19371 days ago · 23 km deep · 60 km away
  5. 5.9102 km E of Yamada, Japan · 19371 days ago · 23 km deep · 7 km away
  6. 3.9109 km E of Yamada, Japan · 19371 days ago · 34 km deep · 14 km away
  7. 4.0131 km E of Yamada, Japan · 19371 days ago · 37 km deep · 36 km away
  8. 4.3110 km E of Yamada, Japan · 19371 days ago · 29 km deep · 13 km away
  9. 4.1off the east coast of Honshu, Japan · 19371 days ago · 33 km deep · 40 km away
  10. 5.0112 km E of Yamada, Japan · 19371 days ago · 28 km deep · 18 km away
  11. 4.3131 km E of Yamada, Japan · 19370 days ago · 18 km deep · 37 km away
  12. 4.6130 km E of Yamada, Japan · 19370 days ago · 30 km deep · 34 km away
  13. 4.4104 km E of Yamada, Japan · 19369 days ago · 29 km deep · 12 km away
  14. 4.661 km NNE of Miyako, Japan · 19356 days ago · 61 km deep · 97 km away
  15. 4.1131 km E of Yamada, Japan · 19355 days ago · 31 km deep · 35 km away
  16. 4.565 km NE of Miyako, Japan · 19335 days ago · 54 km deep · 90 km away
  17. 4.1113 km E of Yamada, Japan · 19320 days ago · 32 km deep · 16 km away

Before

  1. 4.298 km E of Yamada, Japan · 19375 days ago · 33 km deep · 5 km away
  2. 4.097 km E of Yamada, Japan · 19375 days ago · 33 km deep · 3 km away
  3. 3.9104 km E of Yamada, Japan · 19375 days ago · 31 km deep · 7 km away
  4. 3.8111 km E of Yamada, Japan · 19375 days ago · 33 km deep · 14 km away
  5. 4.5116 km E of Yamada, Japan · 19375 days ago · 18 km deep · 19 km away
  6. 4.4105 km E of Yamada, Japan · 19375 days ago · 52 km deep · 19 km away
  7. 4.7106 km E of Yamada, Japan · 19375 days ago · 33 km deep · 9 km away
  8. 5.899 km E of Yamada, Japan · 19375 days ago · 41 km deep · 2 km away
  9. 4.3116 km E of Yamada, Japan · 19375 days ago · 45 km deep · 22 km away
  10. 4.175 km NNE of Miyako, Japan · 19385 days ago · 53 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00003bm. Read Tue, Sep 22, 2026, 12:15 PM UTC.