Japan earthquakes

M4.5 earthquake 11 km SSE of Futtsu, Japan

A magnitude 4.5 earthquake struck 11 km SSE of Futtsu, Japan on Sun, Aug 1, 1982, 1:45 PM JST (04:45 UTC), 84 km (52 mi) below the surface.

A larger quake followed: M5.0 23 km S of Asahi, Japan. This one was a foreshock.

Futtsu 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
4.5 (mb), light
Local time
UTC
1982-08-01 04:45:16 UTC
Depth
84.1 km (52.3 mi), intermediate-depth
Epicenter
35.225° N, 139.880° 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: 8 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.023 km S of Asahi, Japan · 16120 days ago · 56 km deep · 80 km away
  2. 5.126 km E of ?hara, Japan · 16116 days ago · 33 km deep · 73 km away
  3. 5.429 km SSW of Miura, Japan · 16113 days ago · 34 km deep · 51 km away
  4. 4.824 km SSE of Katsuura, Japan · 16105 days ago · 79 km deep · 58 km away
  5. 4.611 km SSE of Asahi, Japan · 16088 days ago · 58 km deep · 85 km away
  6. 4.15 km NE of Kawagoe, Japan · 16070 days ago · 61 km deep · 86 km away
  7. 4.055 km SSE of Tateyama, Japan · 16065 days ago · 33 km deep · 81 km away
  8. 4.98 km E of Ichihara, Japan · 16064 days ago · 81 km deep · 42 km away

Before

  1. 4.30 km WNW of Sakai, Japan · 16134 days ago · 68 km deep · 98 km away
  2. 4.79 km WNW of Ichihara, Japan · 16137 days ago · 76 km deep · 37 km away
  3. 4.33 km SSW of Kashiwa, Japan · 16149 days ago · 126 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001nsm. Read Tue, Sep 22, 2026, 9:37 PM UTC.