Japan earthquakes

M4.2 earthquake 33 km ESE of ?arai, Japan

A magnitude 4.2 earthquake struck 33 km ESE of ?arai, Japan on Thu, Sep 2, 1982, 6:11 AM JST (21:11 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M4.6 11 km SSE of Asahi, Japan. This one was a foreshock.

Ōarai 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
4.2 (mb), light
Local time
UTC
1982-09-01 21:11:48 UTC
Depth
41.5 km (25.8 mi), shallow
Epicenter
36.190° N, 140.919° 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.

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.251 km ESE of Hitachi, Japan · 16089 days ago · 53 km deep · 31 km away
  2. 4.611 km SSE of Asahi, Japan · 16087 days ago · 58 km deep · 67 km away
  3. 4.44 km SE of Karasuyama, Japan · 16078 days ago · 123 km deep · 82 km away
  4. 4.871 km ENE of Kashima-shi, Japan · 16075 days ago · 48 km deep · 42 km away
  5. 4.586 km ENE of Hasaki, Japan · 16072 days ago · 33 km deep · 78 km away
  6. 4.2109 km ENE of Hasaki, Japan · 16063 days ago · 33 km deep · 84 km away
  7. 4.744 km ESE of Takahagi, Japan · 16043 days ago · 53 km deep · 51 km away
  8. 4.566 km ESE of Takahagi, Japan · 16042 days ago · 52 km deep · 47 km away
  9. 4.75 km E of Sawara, Japan · 16039 days ago · 46 km deep · 47 km away

Before

  1. 4.250 km ESE of Hitachi, Japan · 16093 days ago · 50 km deep · 30 km away
  2. 4.816 km E of Iwaki, Japan · 16096 days ago · 63 km deep · 99 km away
  3. 5.679 km ESE of Hitachi, Japan · 16101 days ago · 36 km deep · 54 km away
  4. 3.947 km ESE of Hitachi, Japan · 16104 days ago · 52 km deep · 37 km away
  5. 5.436 km ESE of Hitachi, Japan · 16109 days ago · 50 km deep · 36 km away
  6. 5.430 km ESE of Hitachi, Japan · 16111 days ago · 59 km deep · 29 km away
  7. 5.023 km S of Asahi, Japan · 16120 days ago · 56 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001pca. Read Tue, Sep 22, 2026, 7:46 PM UTC.