Japan earthquakes

M6.1 earthquake 137 km SSE of Honchō, Japan

A magnitude 6.1 earthquake struck 137 km SSE of Honchō, Japan on Mon, May 20, 1968, 7:16 AM JST (22:16 UTC), 37 km (23 mi) below the surface.

A larger quake followed: M6.6 141 km ENE of Kuji, Japan. This one was a foreshock.

Kuji 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
6.1 (mw), strong
Local time
UTC
1968-05-19 22:16:49 UTC
Depth
37.2 km (23.1 mi), shallow
Epicenter
40.929° N, 143.337° 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: 21 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 5.8184 km ENE of Miyako, Japan · 21309 days ago · 15 km deep · 100 km away
  2. 5.9170 km ENE of Noda, Japan · 21309 days ago · 24 km deep · 67 km away
  3. 5.6124 km SSE of Honchō, Japan · 21308 days ago · 28 km deep · 38 km away
  4. 5.573 km SSE of Honchō, Japan · 21308 days ago · 27 km deep · 64 km away
  5. 6.069 km S of Honchō, Japan · 21307 days ago · 50 km deep · 70 km away
  6. 5.6153 km E of Noda, Japan · 21306 days ago · 17 km deep · 72 km away
  7. 5.5166 km E of Noda, Japan · 21305 days ago · 17 km deep · 87 km away
  8. 6.6141 km ENE of Kuji, Japan · 21305 days ago · 27 km deep · 15 km away
  9. 6.1121 km E of Noda, Japan · 21304 days ago · 36 km deep · 84 km away
  10. 5.6146 km ENE of Kuji, Japan · 21304 days ago · 28 km deep · 23 km away
  11. 5.5175 km E of Noda, Japan · 21300 days ago · 35 km deep · 85 km away
  12. 5.574 km S of Honchō, Japan · 21297 days ago · 23 km deep · 72 km away
  13. 5.887 km SSW of Honchō, Japan · 21291 days ago · 47 km deep · 74 km away
  14. 5.6182 km SSE of Honchō, Japan · 21290 days ago · 26 km deep · 56 km away
  15. 5.5191 km E of Noda, Japan · 21289 days ago · 10 km deep · 92 km away
  16. 6.3121 km SSE of Honchō, Japan · 21281 days ago · 41 km deep · 17 km away
  17. 5.9168 km E of Noda, Japan · 21281 days ago · 20 km deep · 87 km away
  18. 6.1166 km E of Noda, Japan · 21276 days ago · 21 km deep · 68 km away
  19. 5.5178 km ENE of Noda, Japan · 21259 days ago · 15 km deep · 55 km away
  20. 5.9134 km E of Noda, Japan · 21257 days ago · 19 km deep · 73 km away
  21. 5.6164 km E of Noda, Japan · 21250 days ago · 24 km deep · 75 km away

Before

  1. 5.8180 km SSE of Honchō, Japan · 21311 days ago · 23 km deep · 54 km away
  2. 6.4191 km SSE of Hiroo, Japan · 21312 days ago · 14 km deep · 70 km away
  3. 5.768 km S of Honchō, Japan · 21312 days ago · 45 km deep · 71 km away
  4. 6.179 km SSW of Honchō, Japan · 21312 days ago · 33 km deep · 80 km away
  5. 6.1111 km S of Shizunai-furukawach?, Japan · 21312 days ago · 43 km deep · 77 km away
  6. 5.768 km ENE of Hachinohe, Japan · 21313 days ago · 59 km deep · 97 km away
  7. 7.970 km S of Honchō, Japan · 21313 days ago · 31 km deep · 75 km away
  8. 6.173 km SSW of Honchō, Japan · 21313 days ago · 30 km deep · 80 km away
  9. 6.1114 km SSE of Honchō, Japan · 21313 days ago · 42 km deep · 24 km away
  10. 6.0165 km SE of Shizunai-furukawach?, Japan · 21313 days ago · 25 km deep · 24 km away
  11. 8.21968 Tokachi-Oki Earthquake · 21313 days ago · 27 km deep · 5 km away
  12. 5.7106 km ENE of Hachinohe, Japan · 21327 days ago · 20 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem822368. Read Tue, Sep 22, 2026, 6:29 AM UTC.