Japan earthquakes

M5.4 earthquake 115 km ESE of Hasaki, Japan

A magnitude 5.4 earthquake struck 115 km ESE of Hasaki, Japan on Mon, Aug 9, 1982, 11:31 AM JST (02:31 UTC), 33 km (21 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.4 (Ms, surface-wave), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1982-08-09 02:31:44 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
35.427° N, 142.055° E
Region
Japan
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
5.4Ms, surface-waveUSGS National Earthquake Information CenterPreferred · Reviewed · 4 stations
5.83Mw, momentISC-GEM global catalogFinal · ±0.24

What happened

The USGS’s account of the effects of this earthquake.

Felt (I JMA) in eastern Honshu.

From the USGS event page for usp0001nxa. U.S. Geological Survey text and figures are in the public domain.

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

Nearest places

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

Nearby

Within 100 km, magnitude 2.4 and up: 3 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 4.793 km E of Hasaki, Japan · 16126 days ago · 59 km deep · 25 km away
  2. 4.586 km ENE of Hasaki, Japan · 16082 days ago · 33 km deep · 68 km away
  3. 4.2109 km ENE of Hasaki, Japan · 16073 days ago · 33 km deep · 95 km away

Before

  1. 5.593 km E of Hasaki, Japan · 16126 days ago · 33 km deep · 31 km away
  2. 4.473 km NE of Hasaki, Japan · 16132 days ago · 33 km deep · 97 km away
  3. 4.367 km NE of Hasaki, Japan · 16133 days ago · 33 km deep · 96 km away
  4. 5.0near the east coast of Honshu, Japan · 16137 days ago · 55 km deep · 71 km away
  5. 4.0115 km ENE of Hasaki, Japan · 16140 days ago · 33 km deep · 98 km away
  6. 5.0120 km ENE of Hasaki, Japan · 16141 days ago · 36 km deep · 87 km away
  7. 4.991 km ENE of Hasaki, Japan · 16141 days ago · 49 km deep · 87 km away
  8. 4.597 km ENE of Hasaki, Japan · 16141 days ago · 33 km deep · 73 km away
  9. 4.887 km ENE of Hasaki, Japan · 16142 days ago · 49 km deep · 74 km away
  10. 5.0103 km ENE of Hasaki, Japan · 16142 days ago · 33 km deep · 66 km away
  11. 6.288 km ENE of Hasaki, Japan · 16142 days ago · 31 km deep · 77 km away
  12. 5.193 km ENE of Hasaki, Japan · 16142 days ago · 50 km deep · 86 km away
  13. 4.9103 km NE of Hasaki, Japan · 16142 days ago · 33 km deep · 100 km away
  14. 7.193 km ENE of Hasaki, Japan · 16142 days ago · 37 km deep · 91 km away
  15. 5.193 km ENE of Hasaki, Japan · 16142 days ago · 32 km deep · 82 km away
  16. 4.788 km NE of Hasaki, Japan · 16143 days ago · 54 km deep · 97 km away
  17. 4.997 km ENE of Hasaki, Japan · 16143 days ago · 33 km deep · 86 km away
  18. 5.3100 km ENE of Hasaki, Japan · 16143 days ago · 32 km deep · 85 km away
  19. 4.680 km ENE of Hasaki, Japan · 16143 days ago · 63 km deep · 84 km away
  20. 5.082 km NE of Hasaki, Japan · 16143 days ago · 54 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001nxa (also filed as iscgem593390). Read Fri, Oct 2, 2026, 9:25 PM UTC.