Japan earthquakes

M6.4 earthquake 191 km SSE of Hiroo, Japan

A magnitude 6.4 earthquake struck 191 km SSE of Hiroo, Japan on Sat, May 18, 1968, 1:02 AM JST (16:02 UTC), 14 km (8 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.

Open the live map with earthquakes

The earthquake

Magnitude
6.4 (mw), strong
Local time
UTC
1968-05-17 16:02:23 UTC
Depth
13.5 km (8.4 mi), shallow
Epicenter
40.645° N, 144.076° 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
±0.26
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: 18 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.8180 km SSE of Honchō, Japan · 21312 days ago · 23 km deep · 16 km away
  2. 6.1137 km SSE of Honchō, Japan · 21310 days ago · 37 km deep · 70 km away
  3. 5.8184 km ENE of Miyako, Japan · 21309 days ago · 15 km deep · 52 km away
  4. 5.9170 km ENE of Noda, Japan · 21309 days ago · 24 km deep · 35 km away
  5. 5.6124 km SSE of Honchō, Japan · 21308 days ago · 28 km deep · 67 km away
  6. 5.6153 km E of Noda, Japan · 21306 days ago · 17 km deep · 55 km away
  7. 5.5166 km E of Noda, Japan · 21306 days ago · 17 km deep · 54 km away
  8. 6.6141 km ENE of Kuji, Japan · 21305 days ago · 27 km deep · 79 km away
  9. 6.1121 km E of Noda, Japan · 21304 days ago · 36 km deep · 88 km away
  10. 5.6146 km ENE of Kuji, Japan · 21304 days ago · 28 km deep · 62 km away
  11. 5.5175 km E of Noda, Japan · 21300 days ago · 35 km deep · 45 km away
  12. 5.6182 km SSE of Honchō, Japan · 21290 days ago · 26 km deep · 16 km away
  13. 5.5191 km E of Noda, Japan · 21289 days ago · 10 km deep · 37 km away
  14. 6.3121 km SSE of Honchō, Japan · 21281 days ago · 41 km deep · 85 km away
  15. 5.9168 km E of Noda, Japan · 21281 days ago · 20 km deep · 53 km away
  16. 6.1166 km E of Noda, Japan · 21276 days ago · 21 km deep · 39 km away
  17. 5.5178 km ENE of Noda, Japan · 21259 days ago · 15 km deep · 22 km away
  18. 5.9134 km E of Noda, Japan · 21258 days ago · 19 km deep · 72 km away

Before

  1. 6.1114 km SSE of Honchō, Japan · 21313 days ago · 42 km deep · 91 km away
  2. 6.0165 km SE of Shizunai-furukawach?, Japan · 21313 days ago · 25 km deep · 71 km away
  3. 8.21968 Tokachi-Oki Earthquake · 21313 days ago · 27 km deep · 66 km away

Earthquakes todayJapan earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem822260. Read Tue, Sep 22, 2026, 12:10 PM UTC.