Japan earthquakes

M5.5 earthquake 74 km S of Honchō, Japan

A magnitude 5.5 earthquake struck 74 km S of Honchō, Japan on Sat, Jun 1, 1968, 4:51 AM JST (19:51 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M5.8 87 km SSW of Honchō, Japan. This one was a foreshock.

Shizunai-furukawachō 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
5.5 (mw), moderate
Local time
UTC
1968-05-31 19:51:58 UTC
Depth
22.7 km (14.1 mi), shallow
Epicenter
41.459° N, 142.834° 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.

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: 3 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 5.887 km SSW of Honchō, Japan · 21291 days ago · 47 km deep · 17 km away
  2. 6.3121 km SSE of Honchō, Japan · 21281 days ago · 41 km deep · 55 km away
  3. 5.811 km SSW of Honchō, Japan · 21272 days ago · 48 km deep · 65 km away

Before

  1. 5.6146 km ENE of Kuji, Japan · 21304 days ago · 28 km deep · 92 km away
  2. 6.6141 km ENE of Kuji, Japan · 21305 days ago · 27 km deep · 72 km away
  3. 6.069 km S of Honchō, Japan · 21307 days ago · 50 km deep · 14 km away
  4. 5.573 km SSE of Honchō, Japan · 21308 days ago · 27 km deep · 27 km away
  5. 5.6124 km SSE of Honchō, Japan · 21308 days ago · 28 km deep · 77 km away
  6. 6.1137 km SSE of Honchō, Japan · 21309 days ago · 37 km deep · 72 km away
  7. 5.768 km S of Honchō, Japan · 21312 days ago · 45 km deep · 14 km away
  8. 6.179 km SSW of Honchō, Japan · 21312 days ago · 33 km deep · 14 km away
  9. 6.1111 km S of Shizunai-furukawach?, Japan · 21312 days ago · 43 km deep · 22 km away
  10. 5.768 km ENE of Hachinohe, Japan · 21313 days ago · 59 km deep · 89 km away
  11. 7.970 km S of Honchō, Japan · 21313 days ago · 31 km deep · 5 km away
  12. 6.173 km SSW of Honchō, Japan · 21313 days ago · 30 km deep · 10 km away
  13. 6.1114 km SSE of Honchō, Japan · 21313 days ago · 42 km deep · 48 km away
  14. 6.0165 km SE of Shizunai-furukawach?, Japan · 21313 days ago · 25 km deep · 68 km away
  15. 8.21968 Tokachi-Oki Earthquake · 21313 days ago · 27 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem823377. Read Tue, Sep 22, 2026, 6:12 AM UTC.