M6.4 earthquake 66 km WNW of Yonakuni, Japan
A magnitude 6.4 earthquake struck 66 km WNW of Yonakuni, Japan on Fri, Jul 1, 1966, 1:50 PM GMT+8 (05:50 UTC), 113 km (70 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.4 (mw), strong
- Local time
- UTC
- 1966-07-01 05:50:40 UTC
- Depth
- 112.5 km (69.9 mi), intermediate-depth
- Epicenter
- 24.739° N, 122.414° E
- Region
- Japan
- Strongest shaking
- V, moderate shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 5.6% of gravity
- Peak ground velocity
- 1.4 cm/s
- Map
- Automatic
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: 0 in the 60 days after this one and 3 in the 30 days before it.
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem845124. Read Wed, Sep 23, 2026, 2:06 PM UTC.